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III/182             HDE Charts: positions, proper motions    (Nesterov+ 1995)

The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars. Nesterov V.V., Kuzmin A.V., Ashimbaeva N.T., Volchkov A.A., Roeser S., Bastian U. <Astron. Astrophys. Suppl. Ser. 110, 367 (1995)> =1995A&AS..110..367N
ADC_Keywords: Positional data ; Proper motions ; Spectral types Keywords: catalogues - astrometry - stars: fundamental parameters - stars: variable Description: This document is intended to serve as a short description of the data files of the catalogue of 88883 stars of the Henry Draper Extension Charts. Detailed explanation of the Extension, catalogue production and so on may be found in the printed paper referenced above. There are two files comprising the catalogue, namely data file (CATALOG) and individual remarks file (REMARKS). The format of the second one is free - it starts with 6-digits HDE number followed by remark text. The CATALOG file contains 88883 logical records of the length 61 bytes each. A detailed description of the record format is given below. Abstract of Paper: The Henry Draper Extension Charts (Cannon et al., 1949), published in the form of finding charts, provide spectral classification for some 87000 stars mostly between 10th and 11th magnitude. This data, being highly valuable, as yet was practically unusable for modern computer-based astronomy. An earlier pilot project (Roeser et al. 1991) demonstrated a possibility to convert this into a star catalogue, using measurements of cartesian coordinates of stars on the charts and positions of the Astrographic Catalogue (AC) for subsequent identification. We present here a final HDEC catalogue comprising accurate positions, proper motions, magnitudes and spectral classes for 86933 stars of the Henry Draper Extension Charts. References: Cannon A.J., Mayall M.W., 1949, Ann. Harv. Coll. Obs. 112 Roeser S., Bastian U., Wiese K., 1991, A&AS 88, 277 File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 67 88883 The catalogue remarks.dat 70 1148 Remarks
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD [272151/359083]+= HD number 7 A1 --- m_HD Component identification: A, B... 9 A1 --- n_HD [R] 'R' if individual remark for this star is given in the 'remarks' file 11- 12 A2 --- Sp Spectral class 14- 17 F4.1 mag mag Magnitude - photographic or J/V (2) 19 A1 --- P [PCAGMV] Position source flag (1) 21- 22 I2 h RAh Right Ascension J2000.0 (hours) 24- 25 I2 min RAm Right Ascension J2000.0 (minutes) 27- 31 F5.2 s RAs [0/60] Right Ascension J2000.0 (seconds) 33 A1 --- DE- Declination J2000.0 (sign) 34- 35 I2 deg DEd Declination J2000.0 (degrees) 37- 38 I2 arcmin DEm Declination J2000.0 (minutes) 40- 43 F4.1 arcsec DEs [0/60] Declination J2000.0 (seconds) 45 A1 --- pmf [TF] If T (TRUE), proper motions are present; if F (FALSE) only the Epoch is present 46- 52 F7.3 arcsec/yr pmRA ?Annual proper motion in RA (if pmFlag=T) 53- 59 F7.3 arcsec/yr pmDE ?Annual proper motion in DE (if pmFlag=T) 60- 67 F8.3 yr Epoch [1891/1989]? Observation epoch in julian years (if pmf=F)
Note (1): Position source is defined as follows: P = PPM (Roeser et al., 1993, "PPM Star Catalogue", Vol. I-IV, Spektrum Akademischer Verlag, Heidelberg C = GSC-AC (Guide Star and Astrographic Catalogues) A = AC (Astrographic Catalogue) G = GSC (Guide Star Catalogue) M = Miscellaneous V = Variables only found in GCVS or CSVS (General Catalogue of Variable stars or Catalogue of Suspected Variable Stars) Note (2): magnitudes are either the AC B-magnitudes (when PosSource is 'P', 'A' or 'C') or the GSC V/J magnitudes (when PosSource is 'G')
Courtesy: Siegfried Roeser
(End) Francois Ochsenbein [CDS] 18-May-1995
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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