m Velorum


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


catalogues and names m Vel, HR 4216, HD 93497, SAO 222321, WDS 10468-4925
constellation Vela

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


object is infrared source (Engels et al., 1982)

position, motion, parallax:

position (J2000) RA: 10h 46min 46,2sec DEC: -49 25' 12''
position (J1900) RA: 10h 42min 28sec DEC: -48 53' 30''
proper motion (J2000) RA: 0,074 arcsec/a DEC: -0,048 arcsec/a
radial velocity 6 km/s
note: spectroscopic binaries
dynamical parallax 0,022 arcsec

magnitude

visual magnitude 2,69
(V on UBV Johnson system)

spectral / color information

spectral class G5III+G2V
B-V-magnitude 0,9
U-B-magnitude 0,57
R-I-magnitude 0,49

double/multiple star system information

separation 1,7 arcsec
mag difference (of double or brightest multiple) 3,7
note Worley (1978) update of the IDS
note (category: double and multiple data): 2.7 G5III, 6.4 G2V, 116.24y, a = 1.437". Secondary also classified F8:V:.

miscellaneous information

note (category: group membership): Sirius group?

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

position, motion, parallax:

position (J2000) RA: 10h 46min 46,314sec DEC: -49 25' 12,06'' 0,19 arcsec source: 16
proper motion (J2000) RA: 0,0086 arcsec/a DEC: -0,049 arcsec/a source: 25
radial velocity 6 km/s source: 25
galactic coord. (B1950) longitude: 283,03 latitude: 8,57
GCI unit vector (J2000) X: -0,617585 Y: 0,204331 Z: -0,759499

magnitude:

visual 2,69 (observed) source: 25
photovisual 2,8 source: 2
photographic 3,6 source: 2

spectral information:

spectral class G5 source: 96
Morgan-Keenan G5III+G2V source: 25
B-magnitude 3,59 0,05 B-V-magnitude 0,9
U-magnitude 4,16 0,05 U-B-magnitude 0,57

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 2,1 arcsec
magnitude difference between brightest and second brightest component 3,5
position angle 51

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: 10h 44min 36,818sec DEC: -49 9' 19,66'' 0,017 arcsec
position (J2000) RA: 10h 46min 46,194sec DEC: -49 25' 12,29''
proper motion J1950 (FK4) RA: 0,0072 arcsec/a DEC: -0,05 arcsec/a 0,003 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0075 arcsec/a DEC: -0,048 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 2,8 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class G5
source of spectral data Taken from the HD with M stars reclassified by Miss Cannon.

catalogues

source catalogue FK3, catalogue number: 408
Durchmusterung CD-48 5913
Boss General Catalogue 14842
Henry Draper Catalogue 93497

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

position and proper motion:

position (J2000) RA: 10h 46,8min DEC: -49 25'
proper motion (J2000) RA: 0,084 arcsec/a DEC: -0,049 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
- 1880 40 55 2,8'' 2,7 6,2 G5III+G2V R 155
1995 51 2,1''

discoverer information:

discoverer code discoverer reference
R 155 Russell, H.C. -

notes:

note Mu Vel. P = 138yr., a = 1.43", motion direct. A is a spectroscopic binary.