<Catalog Name>
sao | Smithsonian Astrophysical Observatory Star Catalog
<Description>
A character-coded machine-readable version of the "Smithsonian
Astrophysical Observatory Star Catalog" (SAO, SAO Staff 1966) was
prepared by T. A. Nagy (1979) from a packed binary tape obtained from
the Smithsonian Astrophysical Observatory. In addition to certain
format modifications, equatorial coordinates in radians and cross
identifications from the Table of Correspondences SAO/HD/DM/GC (Morin
1973) were added to the converted version; however, the known errata
lists were not incorporated at that time. This version of the catalog
served as a starting point for the version described here. As a prelude
to creation of the 1984 version of the SAO, a new version of the
"SAO-HD-GC-DM Cross Index" was prepared (Roman, Warren and Schofield
1983), since most of the changes and extensions for the SAO involve data
presently in the Cross Index. The original SAO did not use lower case
letters, making some spectral types seem strange. All capital letters
that really should have been lower case in the spectral types have been
changed.
The 1984 version of the SAO contains the corrected and extended cross
identifications, all errata published up to January 1984 and known to
us, numerous errors forwarded to us by colleagues, and errors discovered
at the Astronomical Data Center during the course of this work.
Recently, Clayton A. Smith of the U.S. Naval Observatory, volunteered
to provide J2000.0 positions and proper motions for the SAO stars.
These data have been added to the end of each record, the positions in
both sexagesimal and radian form. Additional errors of which we are
aware (as of May 1991) have been corrected.
Source Catalog Reference: Smithsonian Astrophysical Observatory Staff
1966; revised version ADC 1990
Documentation Reference: Roman, N.G. and Warren Jr., W.H. 1990,
NSSDC/WDC-A-R&S 89-08
<Contact>
For catalog content, contact:
Lee E. Brotzman, Hughes STX
leb@hypatia.gsfc.nasa.gov
For technical (i.e. access) problems:
ads@cuads.colorado.edu
<Filename>
sao.dsc
<Origin>
ADC CD-ROM Volume 1 No. 1
<Date>
01-Apr-1992
<Revised>
09-Apr-1992
<Columns>
59
<Rows>
258997
<Time Period>
<Other>
<General>
1. COLUMN <sao>
SAO number.
2. COLUMN <del_flag>
"D" if this SAO entry refers to a duplicate star from the catalog.
3. COLUMNS <rah> <ram> <ras>
Right ascension B1950.0 equinox and epoch.
4. COLUMN <pm_ra>
Annual proper motion in RA.
5. COLUMN <pm_ra_stdv>
Standard deviation of pm (ra).
6. COLUMN <ram2_flag>
A "+" or "-" to indicate that the minutes of time associated with the
seconds portion of RA <ras2> must be increased or decreased by
1, respectively; otherwise blank (if RA2 is the same minute as RA sec
in <ras>).
7. COLUMN <ras2>
Seconds portion (RA2) of RA at original epoch, precessed to 1950.0
(i.e. 1950 position modified by proper motion).
8. COLUMN <ra2_stdv>
Standard deviation of RA2.
9. COLUMN <ra2_epoch>
Epoch of RA2.
10. COLUMNS <decsign> <decd> <decm> <decs>
Sign and declination, B1950.0 equinox and epoch.
11. COLUMN <pm_dec>
Annual proper motion mu(delta).
12. COLUMN <pm_dec_stdv>
Standard deviation of mu(delta).
13. COLUMN <decm2_flag>
A "+" or "-" to indicate that the arcminutes associated with the
arcseconds portion of Dec (<decs2>) must be increased or decreased
by 1, respectively; otherwise blank (if Dec2 is in the same minute as
Dec in <decs>.)
14. COLUMN <decs2>
Seconds portion (Dec2) of Dec at original epoch, precessed to 1950.0
(i.e. 1950 position modified by the proper motion).
15. COLUMN <dec2_stdv>
Standard deviation of Dec2.
16. COLUMN <dec2_epoch>
Epoch of Dec2.
17. COLUMN <pos_stdv>
Standard deviation of position at epoch 1950.0.
18. COLUMN <ptg>
Photographic magnitude mpg (99.9 if no value present). When both
magnitude fields are 99.9, the miscellaneous code <rem_code> should be
checked for possible variability, in which case magnitudes may not be
reported.
19. COLUMN <v>
Visual magnitude mv (99.9 if no value present).
20. COLUMN <sptype>
Spectral type ("+++" for composite spectra).
21. COLUMN <v_code>
Coded source of visual magnitude:
Photo-
Visual visual Magnitude source
------ ------ --------------------------------------------------------
0 Does not appear in source catalog
1 21 Determined by source catalog
2 22 Determined by source catalog or by authority in footnote
3 23 Source cited in source catalog introduction
24 Source unspecified
5 Taken from "Bonner Durchmusterung"
8 Based on Durchmusterung magnitudes and visual estimates
9 Taken from AGK1
10 Taken from Cordoba Zones (Resultados)
12 Taken from CGA (Perrine 1911a, b) or Cordoba Zones
13 Taken from Harvard publications
14 Taken from Harvard or San Luis photometry
15 Taken from the "Henry Draper Catalogue"
16 Combined magnitude of component stars
17 Arithmetic mean of maximum and minimum magnitudes of a
variable star
Always check the duplicity / variability code <rem_code> when using
magnitudes. When blank, code = 0 and field = 99.9.
22. COLUMN <num_code>
Coded source of star number and footnotes:
Footnote
without with Star Number
------- ---- --------------------------------
0 16 Source catalog only
1 17 Source catalog and BD
2 18 Source catalog and CD
3 19 Source catalog and CPD
4 20 Cordoba B (Resultados) and CD
5 21 Cordoba A (Resultados) and CD
6 22 AGK1 and BD
7 GC and BD
8 24 Cordoba B (Resultados) and CPD
9 Cordoba A (Resultados) and CPD
When blank, the code for DM is 0 or 16, footnote is 0 through 9, and field
is all zeros. Footnotes and star numbers are those appearing in the source
catalogs.
23. COLUMN <ptg_code>
Coded source of photographic magnitude:
Code Source
---- ----------------------------------------------------------
0 Does not appear in source catalog
1 Determined by source catalog
4 Taken from magnitudes of the CPD and diameters of the Cape
Astrographic Catalogue
8 Source cited in source catalog introduction
9 Columbia Contributions Numbers 30 and 31 (Schilt and Hill
1937, 1938)
When blank, code is 0 and field is all zeros.
24. COLUMN <pm_code>
Coded source of proper motions:
Code Source
---- ------------------------------------------------------
1 Determined by source catalog
3 Determined by comparison of catalog and Greenwich AC
5 Determined by comparison of catalog and AGK1
6 Determined by comparison of catalog and Greenwich AC on the basis of the
smallest difference in positions (see page xiii of source reference)
8 Determined by comparison of catalog and AGK1 on the basis of the
smallest difference in positions (see page xiii of source
reference)
25. COLUMN <sptype_code>
Coded source of spectral type:
Code Source
---- ---------------------------------------------------------------
0 Taken from the Henry Draper Catalogue or no spectrum in source
catalog
1 Taken from the HD with M stars reclassified by Miss Cannon
2 Classified by G. G. Cillie
3 Classified by Goedicke
4 Classified by D. Hoffleit
5 Classified by M. W. Mayall
6 Classified at Leander McCormick Observatory
7 Classified by Nassau and Seyfert
If the spectrum is composite, "+++" is stored in the field and the
code is 0.
26. COLUMN <rem_code>
Coded miscellaneous remarks for duplicity and variability:
Code Meaning
---- --------------------------------------------------------------
0 No additional information
1 Double star - see source catalog for source
2 Double star in Aitken's Double Star Catalogue (Aitken 1932)
3 Double star in Burnham's Double Star Catalogue (Burnham 1906)
4 Variable star in visual magnitude in source catalog
5 Variable star in photographic magnitude in source catalog
6 Variable star in both magnitudes
7 Both double and variable, in either visual or photographic magnitudes
When blank, code is 0, no field is involved.
27. COLUMN <v_acc>
Accuracy of visual magnitude: 0 indicates that the magnitude in the
source catalog is reported to 0.00 mag; 1 to 0.0 mag.
28. COLUMN <ptg_acc>
Accuracy of photographic magnitude same coding as for <v_acc>.
29. COLUMN <cat_code>
Code for source catalog:
No. Abbreviated Title
--- --------------------------------
01 AGK2, Volume 1
02 AGK2, Volume 2
03 AGK2, Volume 5
04 AGK2, Volume 6
05 AGK2, Volume 7
06 AGK2, Volume 8
20 Yale Transactions 11
21 Yale Transactions 12 Part I
22 Yale Transactions 12 Part II
23 Yale Transactions 13 Part I
24 Yale Transactions 13 Part II
25 Yale Transactions 14
26 Yale Transactions 16
27 Yale Transactions 17
28 Yale Transactions 18
29 Yale Transactions 19
30 Yale Transactions 20
31 Yale Transactions 21
32 Yale Transactions 22 Part I
33 Yale Transactions 22 Part II
34 Yale Transactions 24
35 Yale Transactions 25
36 Yale Transactions 26 Part I
37 Yale Transactions 26 Part II
38 Yale Transactions 27
40 Cape Annals 17
41 Cape Annals 18
42 Cape Annals 19
43 Cape Annals 20
48 Cape Zone
60 Melbourne 3
61 Melbourne 4
70 GC
71 FK3
74 FK4
30. COLUMN <catnum>
Number in source catalog.
31. COLUMN <dm_cat>
Durchmusterung (dm) identification:
BD Bonner Durchmusterung
CD Cordoba Durchmusterung
CP Cape Photographic Durchmusterung
All DM fields are blank if no DM identification is present.
32. COLUMN <dm>
Sign of DM zone, DM zone, and DM number.
33. COLUMN <dm_comp>
Component identification if there are two or more SAO stars having the
same DM number. For multiple systems included in the "Index Catalogue
of Visual Double Stars" (IDS, see Worley 1980) the IDS components are
given; for non-IDS stars, components were assigned on the basis of
magnitude. If two components of southern double stars are listed, DM
numbers from different catalogs are often quoted for the components.
In these cases, component identifications are usually given without
changing the DM numbers.
34. COLUMN <dm_suppl>
Lower case letter identification for BD supplemental stars (Warren and
Kress 1980).
35. COLUMN <hd>
Henry Draper (HD or HDE) Catalogue number
36. COLUMN <hd_code>
HD Code (1, 2, ... for component identifications where more than one
star has the same HD number (not necessarily equivalent to A, B, ...
or to the component identifications in the IDS.))
Code Meaning
0 Single star or primary with a companion > 0.3 mag (visual) fainter.
1 Brighter component with a companion <= 0.3 mag fainter.
2 Fainter component with a companion <= 0.3 mag brighter.
9 The "SAO Catalog" entry refers to two consecutive HD numbers, the
lower of which is given.
37. COLUMN <gc>
Number in the "General Catalogue of 33342 Stars for 1950" (GC, Boss
1937).
38. COLUMNS <ra> <dec>
Right ascension and declination (B1950.0).
39. COLUMNS <rah_2000> <ram_2000> <ras_2000>
Right ascension for J2000.0.
40. COLUMN <pm_ra_2000>
Annual proper motion in right ascension for J2000.0.
41. COLUMNS <decsign_2000> <decd_2000> <decm_2000> <decs_2000>
Sign of declination, declination for J2000.0.
42. COLUMN <pm_dec_2000>
Annual proper motion in declination for J2000.0.
43. COLUMNS <ra_2000> <dec_2000>
RA and Dec (J2000.0)
44. COLUMNS <dra> <ddec> <cra> <cdec>
Right Ascension (ra) and Declination (dec) are given in two
different formats for compatibility with the ADS. <dra> and <ddec>
are RA and DEC given in floating point notation decimal degrees, Epoch
J2000. <cra> and <cdec> are RA and DEC given in sexagesimal character
notation, Epoch J2000 (i.e. hhmmss.s for RA and ddmmss.s for DEC).
<Additional Information>
PROCEDURE
---------
The assignment of components to SAO stars for which more than one entry has the
same DM number was done when preparing the 1983 SAO-HD-GC-DM Cross Index.
That procedure is described in Roman et al. (1983). A somewhat less detailed
description is given here for completeness.
Components were assigned according to the Index Catalogue of Visual Double Stars
(IDS, Jeffers et al. 1963; Worley 1980); for stars not in the IDS, components
were labeled according to visual magnitude. Supplemental (footnoted) BD stars
(Warren and Kress 1980) were identified and entered with lower case letters.
Corrections and additions to cross-identification data were made as necessary.
Some duplicate DM numbers actually referred to the same star for which SAO data
had been obtained from different source catalogs. In these cases, one record
has been marked "D" in byte 7, normally the one whose position was judged to be
of lower accuracy. However, all data have been retained so that a different
choice may be made by the user. Many stars occur in two DM catalogs (CD, CPD)
in the southern hemisphere. The SAO gives numbers from different catalogs for
the components of some double stars; hence, although there are no duplicate DM
numbers, component confusion can occur. Although a search for such systems was
not exhaustive, the catalog was searched for adjacent entries with declinations
within 3 arcmin of each other. Most of these entries proved to be double stars
and were appended with letter designations as if their DM numbers had been the
same. These DM numbers were not changed.
An important subset of rather bright stars in the published SAO Catalog has no
DM numbers given. (Most of the stars in this subset were identified as FK3
double stars which were omitted from the FK4.) Many of these had been identified
by W. L. Stein, who supplied probable DM numbers. The positions for these stars
were compared manually with their positions in the various DM catalogs and many
additional identifications were made.
The Astronomical Data Center (ADC) has recently completed the preparation of
machine-readable versions of the three DM catalogs: the BD, the CD, and the CPD.
Using these versions, Mr. Barry Rappaport compared the positions of the stars in
the Smithsonian Astrophysical Observatory Star Catalog (sao) with the positions
of the DM stars whose number had been assigned to each entry. A very lengthy
list of possible assignment errors resulted. Each of these has been checked and
the assignment corrected in those cases in which correction appeared desirable.
In many cases, the assignment in the printed SAO is probably incorrect, but the
evidence was not strong enough to warrant a change. As the Henry Draper
Catalogue numbers (hd) had been derived from the DM numbers, those were also
corrected as necessary.
Although the "Henry Draper Extension" (Cannon 1925-1936) stars from "Harvard
Annals", Volume 100, having DM numbers listed in the original catalog, were
included in the SAO, those listed with AG numbers only (Astronomische
Gesellschaft, zones +50 to +54 degrees, Harvard, Rogers 1892; zones +55 to +59
degrees, Helsingfors-Gotha, Kruger 1890) had not been cross identified and
inserted into the machine version. The "Yale Zone Catalogues" (YZ, Barney et al.
1959a, 1959b), which identify stars by their AG numbers, but also give
corresponding DM numbers, were used to cross identify the AG stars. This was
accomplished by using the magnetic tape versions of the YZ and HD catalogs and
matching the stars by machine. A cross index of Henry Draper Extension stars
from "Harvard Annals", Volume 112 (Cannon and Walton Mayall 1949) and DM numbers
(Bonnet 1978) was used to insert HDE numbers from the final HD volume.
Since the GC (Boss 1937) numbers in the "SAO-HD-GC-DM Cross Index" had been
assigned by comparing with HD numbers in the GC, stars without HD numbers in the
Cross Index were missing GC identifications. The magnetic tape file of the GC
was therefore searched by DM number for all stars having no GC numbers in the
Cross Index. Additional GC numbers were found manually (by position) for the few
remaining stars without DM numbers. Fourteen GC stars were found not to be in
the SAO Catalog. HD numbers in the GC were then compared with their counterparts
in the Cross Index for stars in common, leading to the detection and correction
of a number of additional errors.
The catalog contains a numerical code appended to each HD number. The code
originally followed the convention of the "Strasbourg Catalog of Stellar
Identifications" (CSI, Ochsenbein et al. 1981) which assigned the numbers
1, 2, ... for individual components of multiple systems and the digit 9 if two
contiguous HD stars are included in the entry (the lower HD number is usually
given with code 9). Since the component codes were assigned to CSI entries
without regard to letter designations, and because letter designations have now
been added, the HD code was changed to a consistent indication of major
contamination of the spectral type of the component to which the entry applies
by the spectrum of another star (see Table 2). A visual magnitude difference of
0.3 mag was used as the limit for which contamination was indicated. Although
photographic magnitudes would have been more appropriate, the visual magnitudes
in the SAO appeared to be more consistent.
Many HD numbers were added to the "SAO-HD-GC-DM Cross Index" and subsequently to
the SAO, and quite a few incorrect HD numbers were changed. The SAO already
contained spectral types for many of these stars; those types were compared with
the types in the HD, and discrepancies were corrected only where it seemed
desirable. For stars with new HD numbers and no spectral types in the SAO, the
latter were inserted using the machine version of the HD for the main catalog
and the first extension. Spectral types were read from the charts of the second
extension ("Harvard Annals" 112) and approximately 5000 inserted manually; types
were also inserted for other HD stars for which they were missing in the SAO.
For components of multiple stars, spectral types were added or removed according
to the likelihood that the star contributed to the HD type.
Following completion of the Cross Index, all appropriate cross-identification
data were replaced in the 1984 SAO. Additional corrections involving the SAO
only were then made. In certain cases, SAO positions had been found in error,
but correct positions in the SAO system could not have been derived without a
re-reduction of all the original data. Since this would clearly have been
impracticable, positions were taken from the "Cape Photographic Catalogues" for
1950.0 (CPC). (Errata for the CPCs have been published in the zone catalog for
-80 to -90 degrees (Stoy 1968)). The CPC proper motions were applied to the
positions at epoch to bring them to epoch 1950.0.
In the 1984 version, a total of 12,373 SAO records was corrected or
supplemented with 17,915 individual data changes. All changes are listed in
the accompanying file of corrections (see Section 4). Changes in the 1989
version, from the 1984 version, are given in Table 13, and those additional
data changed in the 1990 version are given in Table 15.
As noted in the introduction, Clay Smith provided positions and proper motions
at equinox and epoch J2000.0 and on the system of the FK5.
REMARKS
-------
As mentioned above, the individual data corrections, additions and
changes included in the 1984 version of the SAO Catalog number 17,915, with
12,373 records (4.8%) having at least one change. Since many of the changes
involve corrections to data given in previously published catalogs, it is
important for a user to have access to the individual changes if a discrepancy
is found between this catalog and a previously published one. For this reason,
we have prepared a complete table of all changes made to the previous version
to produce the 1984 version as well as tables of additional changes in the 1989
and 1990 versions. The first corrections and changes table was prepared by
comparing the uncorrected file against the new version with a computer program
which compared the data fields one by one and produced a formatted changes
table. The complete table for the 1984 version is given in the accompanying
file of corrections. If a data entry is blank in either version, it is blank
for the corresponding item in the table. The column labeled "S" gives the
source of the change, as defined in Table 11 by its numerical code. Table 13
lists the changes in the 1989 version and Table 15 lists the changes in the
1990 version. Table 14 explains the codes for the source of the 1989 changes
and table 16 gives the sources of those corrections in the 1990 version that
did not result from the ADC checking of Mr. Rappaport's suggested changes.
Table 11. References for Changes to the SAO Catalog, Version 1984.
Code Reference(s)
1 Haramundanis, K. undated, "Errata Sheet for the SAO Star Catalog";
1971, Note on SAO Catalog Errata (January).
2 Stein, W. L. and Rudisill, J. C., 1977, "Introduction to the
Dahlgren General Catalog", Naval Surface Weapons Center
NSWC/DL TR-3607.
Stein, W. L. 1978, in Bischoff, M., Bull. Inf. Cent. Donnees
Stellaires, No. 14, 2; No. 15, 103.
Stein, W. L., private communication.
3 Bischoff, M. 1978, Bull. Inf. Cent. Donnees Stellaires, No. 14,
2; No. 15, 103.
4 Hoffleit, D., private communication.
5 Parsons, S. B. 1977, Bull. Inf. Cent. Donnees Stellaires,
No. 12, 41.
6 Nagy, T. A. 1979, Documentation for the Machine-Readable
Version of the "Smithsonian Astrophysical Observatory Catalog(ue)"
(EBCDIC Version), Systems and Applied Sciences Corporation
R-SAW-7/79-34.
7 Houziaux, L. and Blondelot-Lickes, J. 1970, Centre Univ. Mons,
Fac. Sci., Dept. Astrophys., Communication No. 13.
8 Stoy, R. H. 1968, "Cape Photographic Catalogue for 1950.0", Zones
-80 to -90 degrees, Ann. Cape Obs. 22 (London: Her Majesty's
Stationery Office).
9 McLaughlin, S. F., private communication.
10 Bonnet, R. 1978, "Cross Identifications of HDE Stars", Bull. Inf.
Cent. Donnees Stellaires, No. 15, 155. Magnetic tape version,
CDS Strasbourg catalog number 4008.
11 Warren, W. H. Jr. and Kress, K. 1980, Catalog of Supplemental
Stars to the Bonner Durchmusterung, Astron. Data Center Bull. 1, 19.
12 Errors and additions from the ADC work.
13 Schmidtke, P. C., private communication.
14 Herald, D. 1979, Occultation Newsl. 2, 49.
Table 12 includes further notes on entries in the microfiche table for which
additional explanations are considered useful to clarify the reasons for
certain changes.
Table 12. Explanatory Notes to Individual Changes.
SAO Note(s)
6404 The GC incorrectly identifies this star as BD+76 309;
GC 11190 is BD+76 309, while this star is +77 309.
9947 This star is misidentified as BD+70 1162 in the GC, as it is in
the IDS and ADS (Aitken 1932). Source 3 corrects the DM number
to +70 1161, assuming that the double entry for +70 1161
represents the two components of the double star. This is not
the case. SAO 9949 is a duplicate entry and should be deleted.
15097 The GC incorrectly lists this star as BD+65 761. It is
actually +65 751, while +65 761 is SAO 15120, which does not
appear in the GC.
17589 The GC incorrectly identifies this star as BD+68x 936, whereas
it is actually +69 936.
23221 Source 1 incorrectly gives this star as BD+53 568a. It is
actually +52 568a.
24753 This star is listed as BD+57 825 in several catalogs. It is
not in the proper position for the BD star, however. There is
a star at the SAO position on photographs, but it is not in the
BD.
29370 These corrections are probably in error. The BD gives +54 1724
29372 as being SW of +54 1725 and lists both star as magnitude 7.5.
The SAO, AGK3 and IDS list the brighter star (delta m = 0.6 mag)
as SE. the HD also lists the brighter star as south, but gives
the same right ascension for both stars. The IDS identifies the
brighter star as BD+54 1724, as do the HD and SAO, but the AGK3
reverses the DM numbers, listing the brighter star as +54 1725.
101858 Sources 2 and 3 suggested changing this stars to BD+17 2945.
It is part of a triple system of which C, the fainter, more
distant component, is +17 2945. SAO 101858 and 101859 appear
to be the A and B components, respectively, of +17 2946.
238176 The GC is in error. GC 14513 is CP-54 3795 and is not in the
HD. GC 14517 is CP-54 3797, which is HD 91593.
Table 13. 1989 Changes to the 1984 Version.
No. Field For Read S
5840 DM No. BD+78 222 21
9160 DM No. BD+69 993a BD+69 993 21
9773 DM No. BD+77 778 21
12509 Spectrum B: Bp 22
20758 DM No. BD+63 2030 BD+63 2030a 21
23221 DM No. BD+53 568a BD+52 568a 21
27123 DM No. BD+57 1199 BD+57 1194 21
29370 DM No. BD+54 1725 BD+54 1724 21
29372 DM No. BD+54 1724 BD+54 1725 21
39436 Spectrum B: Bp 22
45289 DM No. BD+46 2005a BD+46 2005 21
56771 Spectrum GO G0 22
62236 DM No. CD+31 2180 BD+31 2180 21
64711 DM No. BD+40 2872 BD+39 2872 21
74667 DM No. BD+28 255 BD+28 225 21
76943 DM No. BD+28 741 BD+28 742 21
76943 HD No. HD 32479 21
76944 DM No. BD+28 742 BD+28 741 21
76944 HD No. HD 32479 21
82706 DM No. CD+28 2193 BD+28 2193 21
85564 DM No. BD+29 3149a BD+29 3149 21
85567 DM No. BD+29 3149 BD+29 3149a 21
86043 DM No. CD+29 3259 BD+29 3259 21
94818 HD No. HD 247073 23
97434 RA 7h56m2.355s 7h56m4.172s 24
97434 PM (ra) +0.0021s/a +0.0302 s/a 24
107156 DM No. BD+13 4710 BD+13 4714 21
111240 DM No. BD+ 0 602 BD+ 0 603 21
114916 DM No. BD+ 1 1687 BD+ 1 1686 21
128522 DM No. BD- 0 5077 BD+ 0 5077 21
129898 DM No. BD- 0 361 BD- 0 361a 21
130238 PM (ra) 0.03s/a +0.019:s/a 25
130238 PM (dec) 1.30"/a -0.08:"/a 25
131091 DM No. BD- 7 787 BD- 7 788 21
133461 Record Delete 23
142402 Record Delete 23
156969 HD No. HD 103314 21
156999 HD No. HD 103314 21
159442 DM No. CD-19 4188 BD-19 4188 21
159682 DM No. CD-19 4307 BD-19 4307 21
163131 DM No. BD-12 5991 BD-12 5591 21
163131 HD No. HD 204013 HD 188763 21
167662 DM No. CD-30 804 CD-29 804 21
172151 DM No. BD-20 1550 BD-21 1550 21
172631 Record Delete 23
172821 DM No. CD-28 3844 CD-28 3744 21
178737 DM No. BD-21 3161 BD-20 3161 21
178737 HD No. HD 93814 HD 89913 21
179258 DM No. BD-20 3161 BD-21 3161 21
179258 HD No. HD 89913 HD 93814 21
180619 Record Delete 23
181584 Record Delete 23
185579 DM No. CD-27 11769 CD-27 11768 21
186318 DM No. CD-23 13936 CD-23 13937 21
186419 DM No. CD-26 12900 CD-26 12898 21
186717 Record Delete 23
187331 DM No. BD-22 13325 CD-22 13325 21
190341 DM No. BD-22 15388 CD-22 15388 21
192236 DM No. CD-22 16507 CD-22 16508 21
193858 Record Delete 23
193896 Record Delete 23
198195 DM No. BD-34 3755 CD-34 3755 23
201368 DM No. CD-37 6528B 21
204943 DM No. CD-31 10729 CD-31 10727 21
206001 DM No. CD-38 9673 CD-38 9693 21
208948 DM No. CD-36 11642 CD-36 11632 21
209763 DM No. CD-31 15539 CD-31 15149 21
209763 HD No. HD 165930 HD 165725 21
210778 DM No. CD-38 13224 CD-38 13239 21
211312 DM No. CD-36 13215 CD-37 13215 21
213279 DM No. CD-32 16734 21
215182 Record Delete 23
216710 DM No. BD-42 1425 CD-42 1425 21
220069 Spectrum B: Bp 22
222287 Record Delete 23
223213 DM No. CP-49 4828 CP-49 4827 21
226867 DM No. CD-45 10733 CD-45 10731 21
226867 GC No. GC 22215 21
226868 DM No. CP-45 8001C CP-45 8001 21
226868 GC No. GC 22215 21
227380 Record Delete 23
227535 DM No. CD-44 11300 CD-43 11300 21
228027 Record Delete 21
228306 Record Delete Keep 21
229059 Record Delete 23
232734 RA 2h20m50.218s 2h20m53.218s 24
234389 Record Delete 23
236668 Record Delete 23
238148 DM No. CP-53 3909 CP-53 3909B 26
238511 Record Delete 23
240305 Record Delete 23
241167 Record Delete 23
242605 Record Delete 23
242962 Record Delete 23
244399 HD No. HD 153772 HD 153771 26
244399 GC No. GC 22982 21
244400 HD No. HD 153772 26
244400 GC No. GC 22982 21
244725 DM No. CD-55 8100 CP-55 8100 21
246634 DM No. CP-51 10511 CP-51 11511 21
250957 Dec. -60d51'49.26" -60d31'49.26" 24
251166 DM No. CP-66 1447 CP-66 1453 21
251166 HD No. HD 94494 21
252071 DM No. CP-59 4544 21
252312 Spectrum B: Bp 22
256721 DM No. CP-73 746 CP-73 745 21
256935 DM No. CD-74 677 21
258552 DM No. CP-83 398 CP-80 398 21
All communications resulting in the changes in Table 13 are unpublished. For
13028, it is apparent that the proper motions are in error but accurate values
are unavailable. In addition to the changes noted in Table 13, R. E. Reaves
pointed out that plus signs were missing in bytes 27 and 60, that minus signs
were occasionally found in byte 61, and that the seconds of arc field for the
declinations sometimes read 60.00. These problems have been corrected.
Table 14. Sources for Changes in the 1989 Version.
Code Source
21 T. Lederle
22 R. E. Reaves
23 T. Lederle and ADC
24 T. Lederle and T. E. Corbin
25 H. Jahreiss and T. E. Corbin
26 ADC
Table 15. Changes to the SAO since the 1989 Version
+--------------+-------------------+--------------+-------------+
| | | | |
| SAO Number | Field | For | Read |
| | | | |
+--------------+-------------------+--------------+-------------+
| 15475 | DM Number | +66 717 | |
| 19985 | DM Number | +61 2278 | +61 2277 |
| 19985 | HD Number | | 211871 |
| 27062 | Spec. Type | 5 | R5 |
| 27100 | Spec. Type | 5 | R5 |
| 31951 | Spec. Type | P | Pd |
| 32162 | DM Number | +57 2104 | +57 2103 |
| 32162 | HD Number | 239271 | |
| 35236 | DM Number | +56 2966 | +56 2967 |
| 35236 | HD Number | 219134 | |
| 40312 | DM Number | +43 1261 | +43 1260 |
| 40314 | DM Number | +43 1260 | +43 1261 |
| 51472 | DM Number | +46 3506 | +46 3505 |
| 52114 | DM Number | +48 3759 | +48 3757 |
| 187331 | DM Catalog | CD | BD |
| 190341 | DM Catalog | CD | BD |
| 209822 | DM Number | 3512351 | 3512350 |
| 211074 | DM Number | 3713108 | 3713109 |
| 212391 | DM Number | 3018140 | 3018139 |
| 212470 | Mu Dec. - J2000 | 0.003 | |
| 215732 | DM Number | 43 611 | 43 612 |
| 217573 | HD Number | | 39563 |
| 219568 | DM Catalog | CP | CD |
| 219568 | HD Number | 39563 | 68602 |
| 227379 | HD Number | 152233 | |
| 227380 | HD Number | | 152233 |
| 227380 | Delete Code | D | |
| 228306 | RA Sec at Epoch | 36.692 | 36.693 |
| 232345 | DM Number | 51 312 | 51 311 |
| 232345 | HD Number | 7456 | 7455 |
| 232346 | DM Number | 51 311 | 51 312 |
| 232346 | HD Number | 7455 | 7456 |
| 234535 | Spec. Type | GO | G0 |
| 239348 | DM Number | 58 3829 | 58 3823 |
| 239348 | HD Number | 307183 | 102117 |
| 244400 | Supp. Code | 1 | |
| 244400 | HD Number | 537720 | 153772 |
| 244400 | HD Code | 2 | 0 |
| 244400 | GC Number | 29820 | 22982 |
+--------------+-------------------+--------------+-------------+
Table 16. Sources of Changes since 1989 other than DM Numbers
+--------------+------------------------+-----------------------+
| | | |
| SAO Number | Field | Source |
| | | |
+--------------+------------------------+-----------------------+
| 27062 | Spec. Type | Allan Moluf |
| 27100 | Spec. Type | Allan Moluf |
| 31951 | Spec. Type | ADC |
| 56597 | Declination | Allan Moluf |
| 75878 | Dec Sec at Epoch | William M. Owen |
| 84129 | Magnitudes | William M. Owen |
| 92548 | Magnitudes | David W. Dunham |
| 97645 | HD Number | A. R. Peters |
| 97646 | HD Number | A. R. Peters |
| 143378 | J2000 Positions | Clayton A. Smith |
| 187331 | DM Catalog | Carl Cole |
| 190341 | DM Catalog | Carl Cole |
| 194834 | Spec. Type | Allan Moluf |
| 208759 | Mu Dec. - J2000 | Allan Moluf |
| 208795 | Mu Dec. - J2000 | Allan Moluf |
| 212470 | Mu Dec. - J2000 | Allan Moluf |
| 217573 | HD Number | ADC |
| 219568 | DM Catalog | ADC |
| 219568 | HD Number | S. F. McLaughlin |
| 227379 | HD Number | A. R. Peters |
| 227380 | Delete Code | ADC |
| 227380 | HD Number | A. R. Peters |
| 228306 | RA Sec at Epoch | ADC |
| 234535 | Spec. Type | Allan Moluf |
| 244400 | Misalignment | Allan Moluf |
+--------------+------------------------+-----------------------+
|NOTE: The magnitudes for 84129 and 92548 are from the SIMBAD |
|data bank of the Centre de Donnees Astronomiques de Strasbourg.|
+--------------+------------------------+-----------------------+
ACKNOWLEDGMENTS
---------------
We wish to express our appreciation to N. J. Schofield Jr., who worked on an
early phase of the SAO project in connection with the revised "SAO-HD-GC-DM
Cross Index", and to D. Hoffleit, S. F. McLaughlin, R. E. Reaves, P. C.
Schmidtke and W. L. Stein for communicating errors. We also thank the several
people who pointed out additional errors, and T. E. Corbin for checking
data for several stars in other catalogs and Mr. Rappaport for sending
us the extensive list of possible problems in the DM numbers assigned
in the SAO. We also thank those listed in Table 16 for alerting us to other
errors. Especially significant was the work of T. Lederle (Astronomisches
Rechen-Institut, Heidelberg), who analyzed a large number of cross
identifications for Durchmusterung stars, provided a large list of possible
errors, and worked with us to improve the changes, which were then inserted
into the 1989 version.
Finally, the new J2000 version of the catalog owes much to the work of C.A.
Smith (U.S. Naval Observatory), who computed the J2000 positions and proper
motions and added them to the data records.
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