catalogues and names

The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

catalogues and names

catalogues and names	z Ari, 58 Ari, HR 972, HD 20150, SAO 75810, BD +20 527, FK5: 1089
constellation	Aries

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

position, motion, parallax:

position (J2000)	RA: 3h 14min 54.1sec	DEC: +21° 2' 40''
position (B1900)	RA: 3h 9min 9.1sec	DEC: +20° 40' 26''
proper motion (J2000)	RA: -0.028 arcsec/a	DEC: -0.073 arcsec/a
radial velocity	7 km/s note: variable radial velocity
rotational velocity	128 km/s (uncertain) (variable)
trigonometric parallax	0.02 arcsec
galactic coordinates	longitude: 162.38°	latitude: -30.62°

magnitude

visual magnitude

4.89 (V on UBV Johnson system)

spectral / color information

spectral class	A1V
B-V-magnitude	-0.01
U-B-magnitude	-0.01
R-I-magnitude

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

position, motion, parallax:

position (J2000)	RA: 3h 14min 54.091sec	DEC: +21° 2' 40.06''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: -0.002 arcsec/a	DEC: -0.073 arcsec/a		source: 25
radial velocity	7 km/s			source: 25
trigonometric parallax	0.02 arcsec		±0.002 arcsec	source: 25
galactic coord. (B1950)	longitude: 162.39°	latitude: -30.62°

magnitude:

visual	4.89 (observed)	source: 25
photovisual	5	source: 2

spectral information:

spectral class	A0		source: 96
Morgan-Keenan	A1V		source: 25
B-magnitude	4.88 ±0.05	B-V-magnitude	-0.01
U-magnitude	4.87 ±0.05	U-B-magnitude	-0.01

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
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: 3h 12min 1.326sec	DEC: +20° 51' 37.93''	±0.004 arcsec
position (J2000)	RA: 3h 14min 54.097sec	DEC: +21° 2' 40.05''
proper motion B1950 (FK4)	RA: -0.0019 arcsec/a	DEC: -0.071 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0019 arcsec/a	DEC: -0.074 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	A0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 1089
Durchmusterung	BD+20 527
Boss General Catalogue	3872
Henry Draper Catalogue	20150