q2Orionis
| catalogues and names | q2Ori, NSV 02320, 43 Ori, HR 1897, HD 37041, SAO 132321, WDS 05354-0525A |
| constellation | Orion |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 5h 35min 22,9sec | DEC: -5° 24' 58'' |
| position (J1900) | RA: 5h 30min 28,2sec | DEC: -5° 28' 54'' |
| proper motion (J2000) | RA: 0,001 arcsec/a | DEC: 0,005 arcsec/a |
| radial velocity | 36 km/s note: spectroscopic binaries note: orbital data avaible |
|
| rotational velocity | 170 km/s (uncertain) (variable) | |
| trigonometric parallax | -0,001 arcsec | |
magnitude
| visual magnitude | 5,08 (V on UBV Johnson system) |
spectral / color information
| spectral class | O9.5Vp |
| B-V-magnitude | -0,09 |
| U-B-magnitude | -0,94 |
| note (category: spectra): | Emission is nebular, to red of H beta. |
| note (category: colors): | Abnormal reddening at 1500A. |
variability information
| variable star identification | 2320 |
| note (category: variability): | 5.05 - 5.19V. Component B is NSV 2326, 6.38 - 6.44V. |
double/multiple star system information
| number of components of multiple star system | 12 |
| separation | 117 arcsec |
| mag difference (of double or brightest multiple) | 0,1 |
| component ID | * |
| note (category: double and multiple data): | ADS 4188AB fixed at 52". B is 6.38V, -0.05(B-V), -0.93(U-B), B0.5V; vsini 17k/s. See HR 1893. |
| note (category: spectroscopic binaries): | ADS 4188A, 20.96722d, K 90.5k/s, V0 +32.1k/s, asini 25.6. Primary 20 solar masses, secondary over 14 solar. Possibly the counterpart of X-ray binary 3U0527-05 with perhaps collapsed components. |
miscellaneous information
| note (category: group membership): | Ori OB1d; sword of Orion; M42; HII region. |
| note (category: miscellaneous): | May be X-ray source 3U0527-05. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 5h 35min 22,935sec | DEC: -5° 24' 57,04'' | ±0,19 arcsec | source: 16 |
| proper motion (J2000) | RA: 0,0009 arcsec/a | DEC: 0,017 arcsec/a | source: 25 | |
| radial velocity | 36 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 209,05° | latitude: -19,37° | ||
| GCI unit vector (J2000) | X: 0,10673 | Y: 0,989798 | Z: -0,094384 | |
magnitude:
| visual | 5,08 (observed) | source: 25 |
| photovisual | 5,2 | source: 2 |
| photographic | 5 | source: 2 |
spectral information:
| spectral class | B1 | source: 96 | |
| Morgan-Keenan | O9.5Vp | source: 25 | |
| B-magnitude | 4,99 ±0,05 | B-V-magnitude | -0,09 |
| U-magnitude | 4,05 ±0,05 | U-B-magnitude | -0,94 |
double/multiple star system information:
| separation between brightest and second brightest component | 52,5 arcsec |
| magnitude difference between brightest and second brightest component | 1,32 |
| position angle | 92 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5,08 | B1 | q2Orionis, 43 Ori, HR 1897, HD 37041, SAO 132321 |
| B | 6,38 | B1 | |
| C | 8,16 | B8 |
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 | |
| 19 | WDS Catalog |
| Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996 | |
| 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 (J1950) | RA: 5h 32min 55,449sec | DEC: -5° 26' 50,72'' | ±0,015 arcsec |
| position (J2000) | RA: 5h 35min 22,883sec | DEC: -5° 24' 57,62'' | |
| proper motion J1950 (FK4) | RA: -0,0003 arcsec/a | DEC: 0,005 arcsec/a | ±0,003 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 | 5,2 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | B1 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 6935 |
| Durchmusterung | BD-05 1319 |
| Boss General Catalogue | 6935 |
| Henry Draper Catalogue | 37041 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 5h 35,4min | DEC: -5° 25' |
| proper motion (J2000) | RA: 0,003 arcsec/a | DEC: 0,002 arcsec/a |
double/multiple star system information:
| component | year | number of measures | position angle | angular separation | magnitude of 1st component | magnitude of 2nd component | spectral class(es) | discoverer code |
| AB | 1836 | 19 | 92° | 52,5'' | 5,07 | 6,39 | O9.5Vep | STF 16 |
| AC | 1869 | 5 | 98° | 128,7'' | 5,2 | 9,1 | - | STF 16 |
| - | 1836 | 9 | 314° | 135'' | 4,9 | 5 | - | STF 17 |
discoverer information:
| discoverer code | discoverer | reference |
| STF 16 | Struve, F.G.W. | - |
| STF 17 | Struve, F.G.W. | - |
notes:
| note | Theta (2) Ori. B is BD-05@ 1320. Proper motion of B +013 +015. A is a spectroscopic binary, P = 21d. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 5h 32min 55,4sec | DEC: -5° 26' 51'' |
variability informations:
| magnitute at max. brightness | 5,05 |
| magnitute at min. brightness | 5,19 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | O9 |
references
| to a study | 100121D (designation: BOND 685) |
| to a chart/photograph | 541273 |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |