File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file stars_t.dat 67 1049 Ptolemy's catalog from Toomer stars_p.dat 67 1073 Ptolemy's catalog from Peters & Knobel stars_b.dat 67 1028 Ptolemy's catalog from Baily stars_m.dat 67 1029 Ptolemy's catalog from Manitius stars_z.dat 67 1028 Ptolemy's catalog from Flamsteed descr_t.dat 1028 Descriptions from Toomer (English) descr_p.dat 1028 Descriptions from Peters & Knobel (Latin) descr_b.dat 1028 Descriptions from Baily (Greek) descr_m.dat 1028 Descriptions from Manitius (German) descr_h.dat 1028 Descriptions from Halma (French) descr_z.dat 1028 Descriptions from Flamsteed (Latin) ident_t.dat 71 1116 Star identifications from Toomer ident_p.dat 71 1128 Star identifications from Peters & Knobel ident_b.dat 71 1097 Star identifications from Baily ident_m.dat 71 1099 Star identifications from Manitius ident_z.dat 71 1101 Star identifications from Flamsteed ident_j.dat 71 1028 Star identifications from John Pratt ident_a.dat 71 1062 Star identifications from VizieR J/A+A/544/A31 ident_f.dat 71 1114 Star identifications from Flamsteed's catalog ident_o.dat 71 1095 Star identifications retained for the maps notes_t.dat Notes on Toomer's version notes_p.dat Notes on Peters & Knobel's version notes_b.dat Notes on Baily's version notes_m.dat Notes on Manitius's version notes_h.dat Notes on Halma's version notes_z.dat Notes on Flamsteed's version dists_to.dat 34 1095 Differences with modern positions -------------------------------------------------------------------------------- Byte-by-byte Description of files: stars_t.dat stars_p.dat stars_b.dat stars_m.dat stars_z.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 4 I4 --- PNo [1/1028]? Unique star number (1) 6- 8 A3 --- PCon ?Ptolemy constellation 9 A1 --- PInf [~]? ~ if 'informis' 10- 11 I2 --- PNum ?Ptolemy number in constellation 12 A1 --- w_Pto [*]? Warning about this entry (2) 13- 15 A3 --- BCon ?Bayer constellation 16 A1 --- w_Bay [*]? Warning about the Bayer identifier (3) 17- 19 A3 --- BLet ?Bayer letter in constellation 21 I1 --- BInd ?Bayer index 23- 25 A3 --- FCon ?Flamsteed constellation 26 A1 --- w_Flm [*]? Warning about the Flamsteed identifier (4) 27- 29 I3 --- FNum ?Flamsteed number in constellation 31- 32 I2 hrs ZRa [0/23]? Piazzi right ascension wedge 34- 36 I3 --- ZNo ?Piazzi number within right ascension wedge 38- 41 I4 --- LNum [0/1942]? Lacaille number (5) 43- 46 I4 --- HR [0/9110]? HR (Bright Star) or Ambronn number (6) 47 A1 --- w_HR [*]? Warning about the HR or Ambronn number (7) 48- 49 I2 --- LO.z [0/11]? Longitude A.D. 137 Zodiac sign (8) 51- 52 I2 deg LO.d ?Longitude (degrees) within zodiac sign 53 A1 --- w_LO [*]? Warning about longitude (9) 54- 55 I2 arcmin LO.m ?Longitude (minutes) 57 A1 --- LA.- [+-]? Latitude sign (10) 59- 60 I2 deg LA.d ?Latitude (degrees) 61 A1 --- w_LA [*]? Warning about latitude (10) 62- 63 I2 arcmin LA.m ?Latitude (minutes) 64 A1 --- w_Mag [*]? Warning about magnitude (11) 65- 67 A3 --- Mag Magnitude or magnitude range (12) -------------------------------------------------------------------------------- Note (1): If present, this is the number of the star in Baily's edition of Ptolemy's catalogue. This number is absent in continuation records, which contain additional or alternative field values for the star. Note (2): In Manitius's version, * here indicates that there is a note about this star on pp. 401-406. Note (3): In Toomer's version, * here indicates that there is doubt about the association of this star with this Bayer identifier. Note (4): In Toomer's version, * here indicates that there is doubt about the association of this star with this Flamsteed identifier. Note (5): The number in Lacaille's catalog of 1942 stars 'Stellarium Australium Catalogus' at the end of 'Coelum Australe Stelliferum', Paris, 1763. Note (6): If present, this is the HR number in all versions except Manitius's. In Manitius's version, this is the Ambronn number. Note (7): In Toomer's version, * here means that there is doubt about this HR identifier. In Manitius's version, * here means that the Ambronn number is marked by a * in the catalog, which indicates the presence of a footnote for this star. Note (8): The degrees part of the ecliptic longitude is expressed by two components: the zodiac sign, an integer from 0 (Aries) to 11 (Pisces), and the offset in degrees (in the range [0, 30[) within the zodiac sign. The degrees part of the ecliptic longitude is therefore 30 * Lo.z + Lo.d. All versions use the traditional symbols for the zodiac signs, rather than integers. Note (9): In Toomer's version, * here means that there is doubt about the longitude of this star. In Peters & Knobel's and Baily's versions, * here means that their longitudes differ. In Flamsteed's version, * here means that the longitude is marked :: in the catalog. Note (10): In Toomer's version, * here means that there is doubt about the latitude of this star. In Peters & Knobel's and Baily's version, * here means that their latitudes differ. In Flamsteed's version, * here means that the latitude is marked :: in the catalog. Note (11): In Toomer's version, * here indicates that there is doubt about the magnitude of this star. Note (12): The magnitude field consists of a single integer or, in some of the versions, an integer range such as 4-3. It may also contain the word 'obs' (obscure) or 'neb' (nebulous). -------------------------------------------------------------------------------- Byte-by-byte Description of files: ident_o.dat ident_t.dat ident_p.dat ident_b.dat ident_m.dat ident_z.dat ident_j.dat ident_a.dat ident_f.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 4 I4 --- PNo [1/1028]? Unique star number (1) 6- 8 A3 --- PCon ?Ptolemy constellation (1) 9 A1 --- PInf [~]? ~ if 'informis' (1) 10- 11 I2 --- PNum ?Ptolemy number in constellation (1) 12 A1 --- NoId [*+]? Identification issue (2) 13- 15 A3 --- BCon ?Bayer constellation 17- 19 A3 --- BLet ?Bayer letter 20 A1 --- IFlag [*]? Indexless flag (3) 21 A1 --- BInd ?Bayer index 23- 25 A3 --- FCon ?Flamsteed constellation 27- 29 I3 --- FNum [1-141]? Flamsteed number 31- 34 I4 --- HR [1-9110]? Bright Star catalog number 36- 41 I6 --- HD [1-359083]? Henry Draper catalog number 43- 48 I6 --- HIP [1-120416]? Hipparcos catalog number 50- 53 A4 --- Com ?Component letter(s) (4) 55- 79 A25 --- Name ?Object name(s) -------------------------------------------------------------------------------- Note (1): these fields are empty on lines containing additional matches for the current star. Note (2): a '*' here indicates that this catalog entry has no identification; a '+' indicates that the identification is not given directly in the source catalog but has been inferred from catalog notes or non-standard designations, or corrected from an obvious error in the catalog. Note (3): a '*' here indicates that the indexless Bayer letter has been interpreted as this component. Note (4): component letter(s) from the Bright Star catalog (corresponding to component letters in the ADS catalog). -------------------------------------------------------------------------------- Byte-by-byte Description of files: dists_to.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 4 I4 --- PNo [1/1028]? Unique star number 6- 8 A3 --- PCon ?Ptolemy constellation 9 A1 --- PInf [~]? ~ if 'informis' 10- 11 I2 --- PNum ?Ptolemy number in constellation 13- 19 F7.2 arcmin dLO ?Difference in longitude.cos(LA) (1) 21- 27 F7.2 arcmin dLA ?Difference in latitude (1) 29- 34 F6.2 arcmin dist ?Distance between match and Ptolemy (1) -------------------------------------------------------------------------------- Note (1): difference (HIP - Ptolemy), or (HD - Ptolemy) if there is no HIP match, based on the positions in ptolemy_t.dat and identifications in ident_o.dat -------------------------------------------------------------------------------- History: * 2017-12-15: in stars_z.dat, corrected two zodiac signs and a latitude sign that affected several stars in Tau. * 2017-12-17: in stars_p.dat, associate Bayer letter nu to both Flamsteed identifiers 24 Dra and 25 Dra. * 2018-01-05: in stars_b.dat, add Piazzi identifiers from the notes to 86, 196, 206, 218. * 2018-01-07: in stars_z.dat, corrected the text's omission (misprint ?) of zodiac sign Virgo in Crt 6, which affected subsequent stars up to Crv 7 (an exception to the rule of leaving the original unmodified but this error was too obvious and far-reaching). * 2018-02-23: added Toomer's version. * 2018-04-07: in stars_z.dat, corrected ambiguous longitude of Ari 1 from 0 to 6. * 2019-01-03: removed Hevelius columns since only Peters & Knobel's version had just a few of these identifiers. They are mentioned in the notes file. The file format changed after column 31. * 2019-01-29: filled implicit field values (constellation abbreviations, longitude zodiac signs, latitude signs). * 2019-06-12: added format for identification files. * 2019-08-20: added preferred identifications file ident_o.dat and distances file dist_to.dat. ================================================================================