phi Velorum

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

position, motion, parallax:

magnitude

visual magnitude

3.54
(V on UBV Johnson system)

spectral / color information

double/multiple star system information

separation	37.2 arcsec
mag difference (of double or brightest multiple)	8.3
note	Worley (1978) update of the IDS

note (category: double and multiple data):

Companion K0III, optical.

miscellaneous information

note (category: group membership):

Sco-Cen assoc.

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

position, motion, parallax:

magnitude:

spectral information:

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	37.2 arcsec
magnitude difference between brightest and second brightest component	8.83
position angle	8 °

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
15	FK5, FK5 Extension and FK5 Supplement
Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991
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 (B1950)	RA: 9h 55min 6.249sec	DEC: -54° 19' 44.86''	±0.01 arcsec
position (J2000)	RA: 9h 56min 51.753sec	DEC: -54° 34' 3.78''
proper motion B1950 (FK4)	RA: -0.0014 arcsec/a	DEC: 0.005 arcsec/a	±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0012 arcsec/a	DEC: 0.007 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	3.7 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	B5
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

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

position and proper motion:

position (J2000)	RA: 9h 56.9min	DEC: -54° 34'
proper motion (J2000)	RA: -0.01 arcsec/a	DEC: 0.003 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
-	1901	1	8°	37.2''	3.55	12.38	B5Ib	I 396

discoverer information:

discoverer code	discoverer	reference
I 396	Innes, R.T.A.	-

notes:

note

Psi Vel.

catalogues and names	j Vel, HR 3940, HD 86440, SAO 237522, CP -53 3075, FK5: 375, WDS 09569-5434
constellation	Vela