NSSDCA ID: ASUV-00056
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
Time span: 1968-12-08 to 1970-04-30
This data set includes the complete catalog of the celescope data and is contained on 16-mm microfilm. It was generated at NSSDC from data set 68-110A-01A and includes all its data. These cataloged data are divided into 5 segments, each ordered in a different manner. The first ordering is by right ascension/declination. This ordering is a longitude sort, with all sources appearing at the same right ascension, then being ordered by declination (north to south, or +90 deg to -90 deg). The coordinates used are epoch 1950. This ordering is the form in which the celescope catalog is ordered on the magnetic tape. The second ordering is by Henry Draper (HD) number. This ordering is based on the serial numbers assigned sources in the Henry Draper star catalog. Sources not assigned HD numbers appear at the end of the listing. The third ordering is by Durchmusterung number. This ordering is sorted on declination (north to south, or +90 deg to -90 deg). The fourth ordering is by visual magnitude. This ordering lists the sources in order by ascending magnitude. The fifth ordering is by spectral class and subclass and, within each subclass, lists sources by ascending luminosity. In the last two sorts, objects with the same sort parameter (e.g., visual magnitude) are ordered by right ascension and then, if necessary, by declination. For information on the main data base, contact Dr. Robert J. Davis, Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138.
Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. William A. Deutschman | General Contact | Smithsonian Astrophysical Observatory |