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	5 Tau, HR 1066, HD 21754, SAO 93469, BD +12 486, FK5: 125
constellation	Taurus

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

position, motion, parallax:

position (J2000)	RA: 3h 30min 52.4sec	DEC: +12° 56' 12''
position (B1900)	RA: 3h 25min 21sec	DEC: +12° 35' 39''
proper motion (J2000)	RA: 0.02 arcsec/a	DEC: -0.002 arcsec/a
radial velocity	15 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible
rotational velocity	<19 km/s
trigonometric parallax	-0.012 arcsec
galactic coordinates	longitude: 172.07°	latitude: -34.32°

magnitude

visual magnitude

4.11 (V on UBV Johnson system)

spectral / color information

spectral class	K0II-IIIFe-0.5
B-V-magnitude	1.12
U-B-magnitude	1.02
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

double/multiple star system information

separation	0 arcsec
mag difference (of double or brightest multiple)	2

note (category: spectroscopic binaries):

4.5, 6.5v, sep. 0.011", 960.0d, K 8.3k/s, V0 +14.2k/s, asini 100. Unresolved by speckle interferometry 1980.94 and 1981.68.

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

position, motion, parallax:

position (J2000)	RA: 3h 30min 52.382sec	DEC: +12° 56' 12.03''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: 0.0013 arcsec/a	DEC: -0.002 arcsec/a		source: 25
radial velocity	15 km/s			source: 25
galactic coord. (B1950)	longitude: 172.07°	latitude: -34.32°

magnitude:

visual	4.11 (observed)	source: 25
photovisual	4.3	source: 2

spectral information:

spectral class	K0		source: 96
Morgan-Keenan	K0-II-IIIFe-0.5		source: 25
B-magnitude	5.23 ±0.05	B-V-magnitude	1.12
U-magnitude	6.25 ±0.05	U-B-magnitude	1.02

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 28min 6.502sec	DEC: +12° 46' 0.3''	±0.004 arcsec
position (J2000)	RA: 3h 30min 52.389sec	DEC: +12° 56' 12.11''
proper motion B1950 (FK4)	RA: 0.0013 arcsec/a	DEC: 0.002 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0014 arcsec/a	DEC: -0.001 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.3 (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

source catalogue	FK4, catalogue number: 125
Durchmusterung	BD+12 486
Boss General Catalogue	4184
Henry Draper Catalogue	21754