Thabit
| catalogues and names |
| The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) |
| SKY2000 - Master Star Catalog |
| Smithsonian Astrophysical Observatory Star Catalog |
catalogues and names
| catalogues and names | Thabit, u Ori, NSV 16333, 36 Ori, HR 1855, HD 36512, SAO 132222, BD -7 1106 |
| other names | Tabit |
| constellation | Orion |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Thabit; Tabit. See HR 1543. |
position, motion, parallax:
| position (J2000) | RA: 5h 31min 55.8sec | DEC: -7° 18' 5'' | ||
| position (B1900) | RA: 5h 27min 5.5sec | DEC: -7° 22' 31'' | ||
| proper motion (J2000) | RA: -0.001 arcsec/a | DEC: -0.005 arcsec/a | ||
| radial velocity | 17 km/s note: variable radial velocity |
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| rotational velocity | 20 km/s (uncertain) (variable) | |||
| galactic coordinates | longitude: 210.44° | latitude: -20.98° | ||
| note (category: radial and/or rotational velocities): | Expanding circumstellar shell. |
magnitude
| visual magnitude | 4.62 (V on UBV Johnson system) |
spectral / color information
| spectral class | B0V |
| B-V-magnitude | -0.26 |
| U-B-magnitude | -1.07 |
| R-I-magnitude |
miscellaneous information
| note (category: group membership): | Ori OB1c; sword of Orion. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 5h 31min 55.842sec | DEC: -7° 18' 5.35'' | ±0.19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0.0004 arcsec/a | DEC: 0.005 arcsec/a | source: 25 | |
| radial velocity | 17 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 210.44° | latitude: -20.98° | ||
magnitude:
| visual | 4.62 (observed) | source: 25 |
| photovisual | 4.6 | source: 16 |
| photographic | 4.5 | source: 2 |
spectral information:
| spectral class | B3 | source: 96 | |
| Morgan-Keenan | B0V | source: 25 | |
| B-magnitude | 4.36 ±0.05 | B-V-magnitude | -0.26 |
| U-magnitude | 3.29 ±0.05 | U-B-magnitude | -1.07 |
sources:
| 2 | HD and HDE Catalogs |
| Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University | |
| 16 | PPM North and PPM South Catalogs and PPM Supplement |
| Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993 | |
| 25 | Bright Star Catalogue, 5th edition |
| Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994 | |
| 96 | SAO or HD/HDE Catalog |
| Reference from Value 1 or Reference from Value 2 | |
data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)
position and proper motion:
| position (B1950) | RA: 5h 29min 30.607sec | DEC: -7° 20' 12.87'' | ±0.021 arcsec |
| position (J2000) | RA: 5h 31min 55.834sec | DEC: -7° 18' 5.38'' | |
| proper motion B1950 (FK4) | RA: -0.0005 arcsec/a | DEC: -0.006 arcsec/a | ±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0001 arcsec/a | DEC: -0.005 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.6 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | B3 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 6850 |
| Durchmusterung | BD-07 1106 |
| Boss General Catalogue | 6850 |
| Henry Draper Catalogue | 36512 |