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	18 Tau, HR 1144, HD 23324, SAO 76137, BD +24 546
constellation	Taurus

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

position, motion, parallax:

position (J2000)	RA: 3h 45min 9.7sec	DEC: +24° 50' 21''
position (B1900)	RA: 3h 39min 11.6sec	DEC: +24° 31' 32''
proper motion (J2000)	RA: 0.02 arcsec/a	DEC: -0.047 arcsec/a
radial velocity	-2 km/s note: spectroscopic binaries, double lined spectra
rotational velocity	246 km/s (uncertain) (variable)
galactic coordinates	longitude: 165.7°	latitude: -23.26°

magnitude

visual magnitude

5.64 (V on UBV Johnson system)

spectral / color information

spectral class	B8V
B-V-magnitude	-0.07
U-B-magnitude	-0.36
R-I-magnitude

double/multiple star system information

separation	0.1 arcsec
mag difference (of double or brightest multiple)	0
note	doublicity discoverd by occultation

miscellaneous information

note (category: group membership):

Pleiades cluster; Mel 22 #541; embedded in reflection nebulosity.

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

position, motion, parallax:

position (J2000)	RA: 3h 45min 9.707sec	DEC: +24° 50' 21.97''	±0.43 arcsec	source: 16
proper motion (J2000)	RA: 0.0008 arcsec/a	DEC: -0.037 arcsec/a		source: 25
radial velocity	-2 km/s			source: 25
galactic coord. (B1950)	longitude: 165.71°	latitude: -23.26°

magnitude:

visual	5.64 (observed)	source: 25
photovisual	5.6	source: 2
photographic	5.6	source: 16

spectral information:

spectral class	B8		source: 96
Morgan-Keenan	B8V		source: 25
B-magnitude	5.57 ±0.05	B-V-magnitude	-0.07
U-magnitude	5.21 ±0.05	U-B-magnitude	-0.36

double/multiple star system information:

source of data: 25

separation between brightest and second brightest component	0.1 arcsec
magnitude difference between brightest and second brightest component	0

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
16	PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
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 42min 10.395sec	DEC: +24° 41' 2.03''	±0.021 arcsec
position (J2000)	RA: 3h 45min 9.735sec	DEC: +24° 50' 21.23''
proper motion B1950 (FK4)	RA: 0.0015 arcsec/a	DEC: -0.044 arcsec/a	±0.004 arcsec/a in RA ±0.004 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0014 arcsec/a	DEC: -0.047 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.6 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	B8
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 4485
Durchmusterung	BD+24 546
Boss General Catalogue	4485
Henry Draper Catalogue	23324