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	49 Ori, HR 1937, HD 37507, SAO 132411, BD -7 1142
constellation	Orion

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

position, motion, parallax:

position (J2000)	RA: 5h 38min 53.1sec	DEC: -7° 12' 47''
position (B1900)	RA: 5h 34min 2.7sec	DEC: -7° 16' 7''
proper motion (J2000)	RA: -0.012 arcsec/a	DEC: -0.053 arcsec/a
radial velocity	-1 km/s note: spectroscopic binaries note: orbital data avaible
rotational velocity	170 km/s (uncertain) (variable)
trigonometric parallax	0.042 arcsec
galactic coordinates	longitude: 211.16°	latitude: -19.4°

magnitude

visual magnitude

4.8 (V on UBV Johnson system)

spectral / color information

spectral class	A4V
B-V-magnitude	0.13
U-B-magnitude	0.11
R-I-magnitude

double/multiple star system information

note (category: spectroscopic binaries):

445.74d, K 28.6k/s, V0 -1.5k/s, asini 146. Massive invisible component.

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

position, motion, parallax:

position (J2000)	RA: 5h 38min 53.089sec	DEC: -7° 12' 46.4''	±0.19 arcsec	source: 16
proper motion (J2000)	RA: -0.0007 arcsec/a	DEC: -0.048 arcsec/a		source: 25
radial velocity	-1 km/s			source: 25
trigonometric parallax	0.042 arcsec		±0.004 arcsec	source: 25
galactic coord. (B1950)	longitude: 211.17°	latitude: -19.4°

magnitude:

visual	4.8 (observed)	source: 25
photovisual	4.7	source: 16
photographic	5	source: 2

spectral information:

spectral class	A3		source: 96
Morgan-Keenan	A4V		source: 25
B-magnitude	4.93 ±0.05	B-V-magnitude	0.13
U-magnitude	5.04 ±0.05	U-B-magnitude	0.11

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: 5h 36min 27.836sec	DEC: -7° 14' 21.42''	±0.025 arcsec
position (J2000)	RA: 5h 38min 53.108sec	DEC: -7° 12' 46.54''
proper motion B1950 (FK4)	RA: -0.0012 arcsec/a	DEC: -0.054 arcsec/a	±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0008 arcsec/a	DEC: -0.053 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 Harvard or San Luis photometry.

spectral information:

spectral class	A3
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 7039
Durchmusterung	BD-07 1142
Boss General Catalogue	7039
Henry Draper Catalogue	37507