83 Leonis

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

position, motion, parallax:

position (J2000)	RA: 11h 26min 45.3sec	DEC: +3° 0' 47''
position (B1900)	RA: 11h 21min 41.6sec	DEC: +3° 33' 29''
proper motion (J2000)	RA: -0.724 arcsec/a	DEC: 0.18 arcsec/a
radial velocity	-3 km/s note: suspected variable radial velocity
trigonometric parallax	0.054 arcsec
galactic coordinates	longitude: 259.28°	latitude: 58.52°

note (category: dynamical parallaxes):

0.032".

magnitude

visual magnitude

6.5
(V on UBV Johnson system)

spectral / color information

note (category: spectra):

Both components UV deficient. 83 Leo A is a metal rich dwarf with high iron abundance.

double/multiple star system information

number of components of multiple star system	3
separation	28.5 arcsec
mag difference (of double or brightest multiple)	1.1
component ID	AB

note (category: double and multiple data):

AB 6.51 K0IV, 7.57 K2IV-V, >4000y. Combined mag. 6.16V. C, 9.9v at 90" probably physical.

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

position, motion, parallax:

magnitude:

visual	6.5 (observed)	source: 25
photovisual	6.2	source: 2

spectral information:

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	28.4 arcsec
magnitude difference between brightest and second brightest component	1.08
position angle	150 °

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: 11h 24min 13.447sec	DEC: +3° 17' 8.98''	±0.005 arcsec
position (J2000)	RA: 11h 26min 45.347sec	DEC: +3° 0' 47.16''
proper motion B1950 (FK4)	RA: -0.0483 arcsec/a	DEC: 0.177 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0481 arcsec/a	DEC: 0.182 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	6.5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	K0
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: 11h 26.8min	DEC: +3° 1'
proper motion (J2000)	RA: -0.724 arcsec/a	DEC: 0.181 arcsec/a

double/multiple star system information:

discoverer information:

discoverer code	discoverer	reference
STF1540	Struve, F.G.W.	-

notes:

note	83 Leo. B is BD+03@2503. Proper motion of B -727 +189.

catalogues and names	83 Leo, HR 4414, HD 99491, SAO 118864, BD +3 2502, FK5: 1296, WDS 11268+0301A
constellation	Leo