File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file bound_ed.dat 23 1562 Boundary data from E. Delporte's book verts_18.txt 38 694 Vertices (B1875, sex) edges_18.txt 57 781 Edges (B1875, sex) bound_verts_18.txt 38 1562 Boundary vertices (B1875, ccw, sex) bound_edges_18.txt 57 1562 Boundary edges (B1875, ccw, sex) bound_18.txt 23 1562 Boundaries (B1875, ccw, dec) bound_in_18.txt 23 13238 Interpolated boundaries (B1875, ccw, dec) bound_in_20.txt 23 13238 Interpolated boundaries (J2000, ccw, dec) lines_18.txt 26 1194 Merged edges (B1875, dec) lines_in_18.txt 26 7121 Interpolated merged edges (B1875, dec) lines_in_20.txt 26 7121 Interpolated merged edges (J2000, dec) centers_18.txt 32 89 Constellation centers (B1875, dec) centers_20.txt 32 89 Constellation centers (J2000, dec) -------------------------------------------------------------------------------- Byte-by-byte Description of file: bound_ed.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 h RAh Right ascension B1875 (hours) 3 A1 --- D1 [:] delimiter 4- 5 I2 min RAm Right ascension B1875 (minutes) 6 A1 --- D2 [:] delimiter 7- 8 I2 s RAs Right ascension B1875 (seconds) 10 A1 --- DE- Declination B1875 (sign) 11- 12 I2 deg DEd Declination B1875 (degrees) 13 A1 --- D3 [:] delimiter 14- 15 I2 arcmin DEm Declination B1875 (minutes) 16 A1 --- D4 [:] delimiter 17- 18 I2 arcsec DEs Declination B1875 (seconds) 20- 23 A4 --- Con Constellation abbreviation -------------------------------------------------------------------------------- Byte-by-byte Description of file: verts_18.txt and bound_verts_18.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 A3 --- Key Vertex key 5- 6 I2 h RAh Right ascension B1875 (hours) 7 A1 --- D1 [:] delimiter 8- 9 I2 min RAm Right ascension B1875 (minutes) 10 A1 --- D2 [:] delimiter 11- 12 I2 s RAs Right ascension B1875 (seconds) 14 A1 --- DE- Declination B1875 (sign) 15- 16 I2 deg DEd Declination B1875 (degrees) 17 A1 --- D3 [:] delimiter 18- 19 I2 arcmin DEm Declination B1875 (minutes) 20 A1 --- D4 [:] delimiter 21- 22 I2 arcsec DEs Declination B1875 (seconds) 24- 38 A15 --- Cons Constellation abbreviations -------------------------------------------------------------------------------- Byte-by-byte Description of file: edges_18.txt and bound_edges_18.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 A3 --- Key1 Key of 1st vertex 4 A1 --- D1 [:] delimiter 5- 7 A3 --- Key2 Key of 2nd vertex 9 A1 --- Type Edge type: [M]eridian or [P]arallel 10 A1 --- Dir Edge direction: + increasing or - decreasing 12- 13 I2 h RA1_h Right ascension B1875 (hours) of 1st vertex 14 A1 --- D2 [:] delimiter 15- 16 I2 min RA1_m Right ascension B1875 (minutes) of 1st vertex 17 A1 --- D3 [:] delimiter 18- 19 I2 s RA1_s Right ascension B1875 (seconds) of 1st vertex 21 A1 --- DE1- Declination B1875 (sign) of 1st vertex 22- 23 I2 deg DE1_d Declination B1875 (degrees) of 1st vertex 24 A1 --- D4 [:] delimiter 25- 26 I2 arcmin DE1_m Declination B1875 (minutes) of 1st vertex 27 A1 --- D5 [:] delimiter 28- 29 I2 arcsec DE1_s Declination B1875 (seconds) of 1st vertex 31- 32 I2 h RA2_h Right ascension B1875 (hours) of 2nd vertex 33 A1 --- D6 [:] delimiter 34- 35 I2 min RA2_m Right ascension B1875 (minutes) of 2nd vertex 36 A1 --- D7 [:] delimiter 37- 38 I2 s RA2_s Right ascension B1875 (seconds) of 2nd vertex 40 A1 --- DE2- Declination B1875 (sign) of 2nd vertex 41- 42 I2 deg DE2_d Declination B1875 (degrees) of 2nd vertex 43 A1 --- D8 [:] delimiter 44- 45 I2 arcmin DE2_m Declination B1875 (minutes) of 2nd vertex 46 A1 --- D9 [:] delimiter 47- 48 I2 arcsec DE2_s Declination B1875 (seconds) of 2nd vertex 50- 57 A8 --- Cons Constellation abbreviations -------------------------------------------------------------------------------- Byte-by-byte Description of file: bound_18.txt and bound_in_18.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.7 h RAhr Right ascension B1875 (decimal hours) 12 A1 --- DE- Declination B1875 (sign) 13- 21 F9.6 deg DEdeg Declination B1875 (decimal degrees) 23- 26 A4 --- Con Constellation abbreviation -------------------------------------------------------------------------------- Byte-by-byte Description of file: bound_in_20.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.7 h RAhr Right ascension J2000 (decimal hours) 12 A1 --- DE- Declination J2000 (sign) 13- 21 F9.6 deg DEdeg Declination J2000 (decimal degrees) 23- 26 A4 --- Con Constellation abbreviation -------------------------------------------------------------------------------- Byte-by-byte Description of file: lines_18.txt and lines_in_18.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.7 h RAhr Right ascension B1875 (decimal hours) 12 A1 --- DE- Declination B1875 (sign) 13- 21 F9.6 deg DEdeg Declination B1875 (decimal degrees) 23- 29 A7 --- Key Segment key -------------------------------------------------------------------------------- Byte-by-byte Description of file: lines_in_20.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.7 h RAhr Right ascension J2000 (decimal hours) 12 A1 --- DE- Declination J2000 (sign) 13- 21 F9.6 deg DEdeg Declination J2000 (decimal degrees) 23- 29 A7 --- Key Segment key -------------------------------------------------------------------------------- Byte-by-byte Description of file: centers_18.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.7 h RAhr Right ascension B1875 (decimal hours) of center 12 A1 --- DE- Declination B1875 (sign) of center 13- 21 F9.6 deg DEdeg Declination B1875 (decimal degrees) of center 23- 29 F7.2 deg2 Area Constellation area (square degrees) 31- 32 I2 --- Rank Constellation rank in area 34- 37 A4 --- Con Constellation abbreviation -------------------------------------------------------------------------------- Byte-by-byte Description of file: centers_20.txt -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.7 h RAhr Right ascension J2000 (decimal hours) of center 12 A1 --- DE- Declination J2000 (sign) of center 13- 21 F9.6 deg DEdeg Declination J2000 (decimal degrees) of center 23- 29 F7.2 deg2 Area Constellation area (square degrees) 31- 32 I2 --- Rank Constellation rank in area 34- 37 A4 --- Con Constellation abbreviation -------------------------------------------------------------------------------- History: * 2018-03-01: increased the precision of right ascensions from F8.5 to F10.7 and of declinations from F8.5 to F9.6 in centers_18.txt, centers_20.txt, bound_18.txt, lines_18.txt, bound_in_18.txt, lines_in_18.txt, bound_in_20.txt, and lines_in_20.txt. * 2022-04-06: consistently spell "Byte-by-byte Description of file" rather than "... files". ================================================================================