III/135A Henry Draper Catalogue and Extension (Cannon+ 1918-1924; ADC 1989)

Henry Draper Catalogue and Extension 1 (HD,HDE)

Cannon A.J., Pickering E.C.

<Harv. Ann. 91-100 (1918-1924)>

Description:

An updated, corrected, and extended machine-readable version of The Henry Draper Catalogue (HD, Cannon & Pickering 1918-1924) is available with documentation from the Astronomical Data Center (ADC) as of April 1989. Published and unpublished errors discovered in the previous version have been corrected; letters indicating supplemental stars in the BD have been moved to a new byte to distinguish them from double-star components; and the machine-readable portion of The Henry Draper Extension (HDE) (HA 100; Cannon 1925-1936) has been converted to the same format as the main catalog with additional data added as necessary. The catalog lists HD numbers, Durchmusterung numbers, positions for equinox B1900, photovisual and photographic magnitudes, spectral types, codes for the intensity of the spectra used, and remarks.

File Summary:

FileName Lrecl Size Records Explanations
ReadMe 80 8KB   This file
adc.doc 80 27KB 840 Documentation by Nancy G. Roman and Wayne H. Warren Jr (1985)
catalog.dat 48 3646KB 272150 The catalogue

Byte-by-byte Description of file: catalog.dat

Bytes Format Units Label Explanations
1-6 I6   HD [1/272150]+ Henry Draper Catalog (HD) number
7-18 A12   DM Durchmusterung identification (1)
19-20 I2 h RAh Hours RA, equinox B1900, epoch 1900.0
21-23 I3 0.1min RAdm Deci-Minutes RA, equinox B1900, epoch 1900.0
24 A1   DE- Sign Dec, equinox B1900, epoch 1900.0
25-26 I2 deg DEd Degrees Dec, equinox B1900, epoch 1900.0
27-28 I2 arcmin DEm Minutes Dec, equinox B1900, epoch 1900.0
29 I1   q_Ptm [0/1]? Code for Ptm: 0 = measured, 1 = value inferred from Ptg and spectral type
30-34 F5.2 mag Ptm ? Photovisual magnitude (2)
35 A1   n_Ptm [C] 'C' if Ptm is combined value with Ptg
36 I1   q_Ptg [0/1]? Code for Ptg: 0 = measured, 1 = value inferred from Ptm and spectral type
37-41 F5.2 mag Ptg ? Photographic magnitude (2)
42 A1   n_Ptg [C] 'C' if Ptg is combined value for this entry and the following or preceding entry
43-45 A3   SpType Spectral type
46-47 A2   Intensity [ 0-9B] Photographic intensity of spectrum (3)
48 A1   Remarks [DEGMR*] Remarks, see note (4)

 

Note (1):

the DM number is composed of:

Note (2):

the following codes are used for the magnitudes:

Note (3):

this intensity is a number between 1 and 10, but has the value 14 for HD 35041, and value 'B' for HD 37788 and 41366

Note (4):

D = Entry deleted (see adc.doc)

E = Image at edge of plate

G = Position and BD number taken directly from AGK1 and precessed to 1900

M = Multiple images used (see adc.doc)

R = Remark in the published catalog

* = Spectral type refers a cluster, nebula or nebulous star. (see adc.doc)

Remarks:

According to W. H. Warren Jr., 194629 is identical to 194648 and the latter should be deleted.

References:

Cannon, A.J. 1925-1936, The Henry Draper Extension, Ann. Astron. Obs. Harvard College, 100

Cannon, A.J., and Pickering, E.C. 1918-1924, The Henry Draper Catalogue, Ann. Astron. Obs. Harvard College, 91-99

Historical Notes:

* February 1985: see the attached file "adc.doc" by Nancy G. Roman and Wayne H. Warren Jr. (document NSSDC/WDC-A-R&S 84-18); its section 4 described the story of the catalog.

* October 1993: the following few modifications have been added at CDS

(a) insertion of the decimal point for Ptm and Ptg fields

(b) three stars had a declination "-6860" corrected to "-6900": 269534, 269975, 270350

(c) a 0 digit missing in the DEm field of stars 16110 16112 16126 16131 16138 16150 16156 16183 16187 16189 has been added

(d) the spectrum of star 4815 has been corrected

* 16-Apr-1994: Following a note by Sh. Nishimura (NAO Japan), about 60 remarks E and P (emission and peculiar) were changed to lowercase letters. BD designation of star 237694 have been changed from BD+567 1286 to BD+56 1286.

* 02-Jan-1996: List of Errata by W.H. Warren Jr. <w3whw@gibbs.gsfc.nasa.gov>

* 08-Nov-1996: The following errors reported by W. H. Warren were corrected:

HD Datum For Read Remarks

11502*   DM   BD+18   243 B   BD+18   243 A    
11503*   DM   BD+18   243 A   BD+18   243 B    
43436*   DM   BD+67   424 A   BD+67   423a     DMSup *
50227*   DM   BD+23   1523 A   BD+23   1523     No comp.
51295*   DM   BD+23   1554 A   BD+23   1554     No comp.
54052*   DM   BD+06   1526 A   BD+06   1526     No comp.
135780*   Dec -41 57     -41 47     MHD2
144069*   DM   BD-10   4237 A   BD-10   4237 B    
144070*   DM   BD-10   4237 B   BD-10   4237 A    
159000*   DM   BD+44   2722 B   BD+44   2721a     DMSup *
159001*   DM   BD+44   2722 B   BD+44   2722      
192788*   DM   BD+30   3960 A   BD+30   3960a     DMSup *
193877*   DM   BD+01   3984     BD-00   3984      
194629*   DM   BD+74   858 A   BD+74   858     AB dupes
194648*   Delete (use code "D")     = 194629
228312*   DM             BD+37   3826a     BDSup. *
242495*   DM             BD+17   893     AG+17 472
267646*   DM   BD+27   1293     BD+27   1293 A    
267647*   DM   BD+27   1294 A   BD+27   1293 B    
267648*   DM   BD+27   1294 B   BD+27   1294     from WDS
268053*   DM             BD+33   1455     AG+33 725

(End) Francois Ochsenbein [CDS] 11-Oct-1993