g1Velorum

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 g1Vel, NSV 03930, HR 3206, HD 68243, SAO 219501, WDS 08095-4720B
constellation Vela

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)


position, motion, parallax:

position (J2000) RA: 8h 9min 29,3sec DEC: -47° 20' 45''
position (J1900) RA: 8h 6min 24,4sec DEC: -47° 3' 2''
proper motion (J2000) RA: -0,004 arcsec/a DEC: -0,005 arcsec/a
radial velocity 20 km/s
note: spectroscopic binaries
note: orbital data avaible
rotational velocity 119 km/s (uncertain) (variable)

magnitude

visual magnitude 4,27
(V on UBV Johnson system)

spectral / color information

spectral class B1IV
B-V-magnitude -0,23
U-B-magnitude -0,92
R-I-magnitude -0,18

variability information

variable star identification 3930

double/multiple star system information

number of components of multiple star system 5
separation 41,2 arcsec
mag difference (of double or brightest multiple) 2,3
component ID AB
note Worley (1978) update of the IDS
note (category: double and multiple data): Component B of 5 stars within 2' of HR 3207.
note (category: spectroscopic binaries): 1.482575d, K 45.0k/s, V0 +9.7k/s, asini 0.916.

miscellaneous information

note (category: group membership): Gamma Velorum group.

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000) RA: 8h 9min 29,359sec DEC: -47° 20' 43,81'' ±0,19 arcsec source: 16
proper motion (J2000) RA: 0,0009 arcsec/a DEC: -0,002 arcsec/a source: 25
radial velocity 20 km/s source: 25
galactic coord. (B1950) longitude: 262,81° latitude: -7,7°
GCI unit vector (J2000) X: -0,362787 Y: 0,572271 Z: -0,735453

magnitude:

visual 4,27 (observed) source: 25
photovisual 4,8 source: 2
photographic 4,6 source: 2

spectral information:

spectral class B3 source: 96
Morgan-Keenan B1IV source: 25
B-magnitude 4,04 ±0,05 B-V-magnitude -0,23
U-magnitude 3,12 ±0,05 U-B-magnitude -0,92

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 61 arcsec
magnitude difference between brightest and second brightest component 2
position angle 112 °

component magnitude spectral class catalogue(s)/name(s)
A 1,81 O0 Suhail al Muhlif, g2Velorum, HR 3207, HD 68273, SAO 219504
B 4,27 B3 g1Velorum, HR 3206, HD 68243, SAO 219501

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: 8h 7min 56,809sec DEC: -47° 11' 50,48'' ±0,035 arcsec
position (J2000) RA: 8h 9min 29,292sec DEC: -47° 20' 44,54''
proper motion J1950 (FK4) RA: -0,0009 arcsec/a DEC: -0,006 arcsec/a ±0,006 arcsec/a in RA
±0,005 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0004 arcsec/a DEC: -0,005 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,8 (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.

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue GC, catalogue number: 11103
Durchmusterung CD-46 3846
Boss General Catalogue 11103
Henry Draper Catalogue 68243

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000) RA: 8h 9,5min DEC: -47° 20'
proper motion (J2000) RA: -0,004 arcsec/a DEC: 0,006 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 1826 22 220° 41,3'' 1,78 4,27 WC8+O7.5e DUN 65
AC 1835 10 151° 62,3'' 2,2 8,5 - DUN 65
AD 1846 4 141° 93,5'' 2,2 9,4 - DUN 65
BC 1835 4 112° 61'' 6 8 - DUN 65
BD 1902 2 116° '' - - - DUN 65
CD 1826 6 125° 33'' 9 11 - DUN 65
DE 1928 3 146° 1,6'' 9,4 12,8 - I 1175

discoverer information:

discoverer code discoverer reference
DUN 65 Dunlop, J. -
I 1175 Innes, R.T.A. -

notes:

note Gamma (2) Vel. B is CD-46@3846, Gamma (1) Vel. Both components are spectroscopic binaries, and B is variable. A is probably the nearest Wolf-Rayet system. Spectrum: WC8+O7.5e. Spectrum of B B1IV. DE: DE is I 1175 (= RST 4878) at 08 09.5 -47 25.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 8h 7min 56,8sec DEC: -47° 11' 50''

variability informations:

magnitute at max. brightness 4,25
magnitute at min. brightness
photometric system visual, photovisual or Johnson's V

spectral information

spectral class B1

references

to a study 701566D (designation: HR 3206)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).