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	b Tri, NSV 15447, 4 Tri, HR 622, HD 13161, SAO 55306, BD +34 381, FK5: 75
constellation	Triangulum

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

position, motion, parallax:

position (J2000)	RA: 2h 9min 32.6sec	DEC: +34° 59' 14''
position (B1900)	RA: 2h 3min 35.4sec	DEC: +34° 30' 52''
proper motion (J2000)	RA: 0.15 arcsec/a	DEC: -0.04 arcsec/a
radial velocity	10 km/s note: spectroscopic binaries, double lined spectra note: orbital data avaible
rotational velocity	76 km/s (uncertain) (variable)
trigonometric parallax	0.022 arcsec
galactic coordinates	longitude: 140.55°	latitude: -25.2°

magnitude

visual magnitude

3 (V on UBV Johnson system)

spectral / color information

spectral class	A5III
B-V-magnitude	0.14
U-B-magnitude	0.1
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

double/multiple star system information

note (category: spectroscopic binaries):

31.3884d, K 33.3k/s, V0 +15.2k/s, msin3i 1.45, asini 12.2.

miscellaneous information

note (category: group membership):

Hyades group.

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

position, motion, parallax:

position (J2000)	RA: 2h 9min 32.625sec	DEC: +34° 59' 14.24''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: 0.0122 arcsec/a	DEC: -0.04 arcsec/a		source: 25
radial velocity	10 km/s			source: 25
trigonometric parallax	0.022 arcsec		±0.002 arcsec	source: 25
galactic coord. (B1950)	longitude: 140.55°	latitude: -25.2°

magnitude:

visual	3 (observed)	source: 25
photovisual	3.1	source: 2

spectral information:

spectral class	A5		source: 96
Morgan-Keenan	A5IV		source: 25
B-magnitude	3.14 ±0.05	B-V-magnitude	0.14
U-magnitude	3.24 ±0.05	U-B-magnitude	0.1

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: 2h 6min 33.579sec	DEC: +34° 45' 6.52''	±0.004 arcsec
position (J2000)	RA: 2h 9min 32.615sec	DEC: +34° 59' 14.16''
proper motion B1950 (FK4)	RA: 0.012 arcsec/a	DEC: -0.037 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0121 arcsec/a	DEC: -0.041 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	3.1 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	A5
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 75
Durchmusterung	BD+34 381
Boss General Catalogue	2572
Henry Draper Catalogue	13161