File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file zod_data.dat 73 515 Lacaille's zodiacal star catalog zod_ident.dat 78 539 Cross-identifications of the zodiacal stars zod_notes.dat Issues in source catalog -------------------------------------------------------------------------------- Byte-by-byte Description of file: zod_data.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- ZNo [1-515] Number in this catalog 4 A1 --- Flag [*]? Issue with this entry (1) 5- 7 A3 --- BCon ?Constellation abbreviation 9- 11 A3 --- BLet ?Bayer letter 13 A1 --- BInd ?Bayer index 15- 17 A3 --- Mag ?Magnitude of magnitude range (2) 19- 21 I3 deg RAdeg Right ascension 1765 (degrees) 23- 24 I2 arcmin RAmin Right ascension 1765 (minutes) 26- 29 F4.1 arcsec RAsec Right ascension 1765 (seconds) 31- 35 F5.2 arcsec dRA Yearly precession in RA 37- 38 I2 h RA_h Right ascension 1765 (hours) (3) 40- 41 I2 min RA_m Right ascension 1765 (minutes) (3) 43- 44 I2 sec RA_s Right ascension 1765 (seconds) (3) 46- 47 I2 deg DEdeg Declination 1765 (degrees) 49- 50 I2 arcmin DEmin Declination 1765 (minutes) 52- 55 F4.1 arcsec DEsec Declination 1765 (seconds) 57 A1 --- DE- [+-] Declination sign 59 A1 --- dDE- [+-] Yearly precession in DE (sign) 60- 64 F5.2 arcsec dDE Yearly precession in DE (absolute value) 66- 78 A13 --- Name ?Star name -------------------------------------------------------------------------------- Note (1): a * here (not in the original catalog) means that there is an issue with this entry, explained in zod_ident.dat. Note (2): magnitude is either an integer between 1 and 8 or a pair n.m of such values, where m = n + 1 (except for entry 236, which has 6.8, likely a typo). Note (3): RA_m has invalid value 64 for entry 262, which prevents labeling these fields RAh, RAm, RAs (which causes validation to fail). -------------------------------------------------------------------------------- Byte-by-byte Description of file: zod_ident.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- ZNo [1-515]? Number in this catalog (1) 4 A1 --- NoId [+*]? Unidentified entry flag (2) 5- 11 F7.2 arcmin dRA ?Difference in right ascension.cos(DE) (3) 13- 19 F7.2 --- dDE ?Difference in declination (3) 21- 26 F6.2 --- dist ?Distance between match and Lacaille (3) 28- 30 A3 --- BCon ?Bayer constellation 32- 34 A3 --- BLet ?Bayer letter 36 A1 --- BInd ?Bayer index 38- 40 A3 --- FCon ?Flamsteed constellation 42- 44 I3 --- FNum [1-141]? Flamsteed number 46- 49 I4 --- HR [1-9110]? Bright Star catalog number 51- 56 I6 --- HD [1-359083]? Henry Draper catalog number 58- 63 I6 --- HIP [1-120416]? Hipparcos catalog number 65- 68 A4 --- COM ?Component letter(s) (4) 70- 78 A9 --- Name ?Star name -------------------------------------------------------------------------------- Note (1): the number is missing on lines containing additional matches for the current star. Note (2): A '+' here means that the identification requires a correction of the catalog position, or other issue mentioned in zod_notes.dat. A '*' here means that no match could be found in the Hipparcos or Draper catalog for this star. Note (3): difference (HIP - Lacaille), or (HD - Lacaille) if there is no HIP match. Note (4): component letter(s) from the Hipparcos or CCDM catalog. -------------------------------------------------------------------------------- History: * 2019-08-31: initial release. ================================================================================