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	x Aur, NSV 16718, 30 Aur, HR 2029, HD 39283, SAO 25450, BD +55 1027, FK5: 1157
constellation	Auriga

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

note (category: star names):

Flamsteed also called this star 32 Cam = 30 Aur.

position, motion, parallax:

position (J2000)	RA: 5h 54min 50.8sec	DEC: +55° 42' 25''
position (B1900)	RA: 5h 46min 27.9sec	DEC: +55° 41' 1''
proper motion (J2000)	RA: -0.013 arcsec/a	DEC: 0.02 arcsec/a
radial velocity	-12 km/s note: suspected variable radial velocity
rotational velocity	72 km/s (uncertain) (variable)
trigonometric parallax	0.012 arcsec
galactic coordinates	longitude: 157.33°	latitude: 14.72°

magnitude

visual magnitude

4.99 (V on UBV Johnson system)

spectral / color information

spectral class	A2V
B-V-magnitude	0.05
U-B-magnitude	0.12
R-I-magnitude

note (category: spectra):

Lambda Boo type.

miscellaneous information

note (category: group membership):

Sirius group?

note (category: stellar radii or diameters):

Radius relative to Sun = 2.6.

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

position, motion, parallax:

position (J2000)	RA: 5h 54min 50.769sec	DEC: +55° 42' 25.15''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: -0.0015 arcsec/a	DEC: 0.02 arcsec/a		source: 25
radial velocity	-12 km/s			source: 25
trigonometric parallax	0.012 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 157.33°	latitude: 14.72°

magnitude:

visual	4.99 (observed)	source: 25
photovisual	4.9	source: 2

spectral information:

spectral class	A2		source: 96
Morgan-Keenan	A2V		source: 25
B-magnitude	5.04 ±0.05	B-V-magnitude	0.05
U-magnitude	5.16 ±0.05	U-B-magnitude	0.12

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: 5h 50min 39.215sec	DEC: +55° 41' 52.55''	±0.005 arcsec
position (J2000)	RA: 5h 54min 50.768sec	DEC: +55° 42' 25.32''
proper motion B1950 (FK4)	RA: -0.0014 arcsec/a	DEC: 0.022 arcsec/a	±0.002 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0015 arcsec/a	DEC: 0.022 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.9 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	A2
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 1157
Durchmusterung	BD+55 1027
Boss General Catalogue	7404
Henry Draper Catalogue	39283