q2Orionis


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. The Washington Visual Double Star Catalog, 1996.0

  5. Combined General Catalogue of Variable Stars (suspected variables)


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)


object is infrared source (uncertain identification)

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:

source of data: 19
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)).