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	a Mon, 26 Mon, HR 2970, HD 61935, SAO 134986, BD -9 2172, FK5: 293
constellation	Monoceros

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

note (category: star names):

In early catalogues called Gamma Mon; HR 2227 now called Gamma, was Alpha in BAC and numerous older catalogues.

position, motion, parallax:

position (J2000)	RA: 7h 41min 14.8sec	DEC: -9° 33' 4''
position (B1900)	RA: 7h 36min 28.1sec	DEC: -9° 19' 4''
proper motion (J2000)	RA: -0.073 arcsec/a	DEC: -0.019 arcsec/a
radial velocity	11 km/s
rotational velocity	<17 km/s (uncertain) (variable)
trigonometric parallax	0.024 arcsec
galactic coordinates	longitude: 227.19°	latitude: 6.52°

magnitude

visual magnitude

3.93 (V on UBV Johnson system)

spectral / color information

spectral class	K0III
B-V-magnitude	1.02
U-B-magnitude	0.88
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

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

position, motion, parallax:

position (J2000)	RA: 7h 41min 14.835sec	DEC: -9° 33' 4.19''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: -0.0049 arcsec/a	DEC: -0.019 arcsec/a		source: 25
radial velocity	11 km/s			source: 25
trigonometric parallax	0.024 arcsec		±0.002 arcsec	source: 25
galactic coord. (B1950)	longitude: 227.19°	latitude: 6.52°

magnitude:

visual	3.93 (observed)	source: 25
photovisual	4.1	source: 2
photographic	5.1	source: 2

spectral information:

spectral class	K0		source: 96
Morgan-Keenan	G9IIIFe-1		source: 25
B-magnitude	4.95 ±0.05	B-V-magnitude	1.02
U-magnitude	5.83 ±0.05	U-B-magnitude	0.88

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: 7h 38min 51.466sec	DEC: -9° 25' 59.53''	±0.006 arcsec
position (J2000)	RA: 7h 41min 14.846sec	DEC: -9° 33' 4.28''
proper motion B1950 (FK4)	RA: -0.0052 arcsec/a	DEC: -0.024 arcsec/a	±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0048 arcsec/a	DEC: -0.02 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.1 (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: 293
Durchmusterung	BD-09 2172
Boss General Catalogue	10345
Henry Draper Catalogue	61935