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VI/49 Constellation Boundary Data (Davenhall+ 1989)
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Catalogue of Constellation Boundary Data
Davenhall A.C., Leggett S.K.
<(1989)>
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ADC_Keywords: Constellations
Description:
A computer readable catalog of constellation boundary data is
presented in a form suitable for the construction of star charts and
atlases. Two data files are available, one for equator and equinox
1875 and the other for equator and equinox 2000. In addition to the
data files a documentation file is available that includes a table
listing the abbreviations used for the constellations as well as a
more detailed discussion of the preparation of the catalog.
The present catalog of constellation boundary data is complementary to
that of Roman (1987). Roman's catalog should be used to determine in
which constellation an object lies in. The present catalog is more
suited to the construction of star charts and atlases. Both catalogs
were based on Delporte (1930).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
constell.doc 84 260 constell.doc - detailed discussion
constell.tex 86 299 constell.tex - LaTeX version of constell.doc
adc.sty 78 68 adc style file
bound_18.dat 25 1566 Boundaries for 1875
bound_20.dat 29 13422 Boundaries for 2000
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See also:
VI/42 : Identification of a Constellation From Position (Roman 1987)
Byte-by-byte Description of file: bound_18.dat
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Bytes Format Units Label Explanations
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1- 8 F8.5 h RAhr Right ascension in decimal hours (1875)
10- 18 F9.5 deg DEdeg Declination in degrees (1875)
20- 23 A4 --- con Constellation abbreviation
25 A1 --- type [O] Type of point (O = original)
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Byte-by-byte Description of file: bound_20.dat
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Bytes Format Units Label Explanations
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1- 10 F10.7 h RAhr Right ascension in decimal hours (J2000)
12- 22 F11.7 deg DEdeg Declination in degrees (J2000)
24- 27 A4 --- con Constellation abbreviation
29 A1 --- type [OI] Type of point (Original or Interpolated)
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Acknowledgements:
The authors of the catalog are grateful to Mr. D.A. Pickup for useful
discussions about the format of Delporte's lists and the effect of
precession on the shape of the constellation boundaries and to Dr.
W.H. Warren Jr. for several useful suggestions. This work was carried
out as part of a contract with the Edinburgh publishers John
Bartholomew and Son Ltd. to provide data for a revised edition of
`Norton's Star Atlas'.
References:
Delporte, E. 1930, Delimitation Scientifique des Constellations
(Cambridge: Cambridge University Press).
Roman, N.G. 1987, Publ. Astron. Soc. Pac. 99, pp695-699.
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(End) N. G. Roman [SSDOO/ADC] 27-May-1997