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	38 Ori, HR 1872, HD 36777, SAO 112904, BD +3 964
constellation	Orion

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

position, motion, parallax:

position (J2000)	RA: 5h 34min 16.7sec	DEC: +3° 46' 1''
position (B1900)	RA: 5h 29min 0.9sec	DEC: +3° 41' 55''
proper motion (J2000)	RA: -0.031 arcsec/a	DEC: -0.018 arcsec/a
radial velocity	-4 km/s note: variable radial velocity
rotational velocity	145 km/s (uncertain) (variable)
trigonometric parallax	0.014 arcsec
galactic coordinates	longitude: 200.43°	latitude: -15.27°

magnitude

visual magnitude

5.36 (V on UBV Johnson system)

spectral / color information

spectral class	A2V
B-V-magnitude	0.05
U-B-magnitude	0.07
R-I-magnitude

double/multiple star system information

separation	0.4 arcsec
note	Worley (1978) update of the IDS

note (category: double and multiple data):

Suspected visual double probably single. Unresolved by speckle interferometry.

miscellaneous information

note (category: group membership):

UMa stream; Ori OB1.

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

position, motion, parallax:

position (J2000)	RA: 5h 34min 16.746sec	DEC: +3° 46' 1''	±0.43 arcsec	source: 16
proper motion (J2000)	RA: -0.0026 arcsec/a	DEC: -0.011 arcsec/a		source: 25
radial velocity	-4 km/s			source: 25
trigonometric parallax	0.014 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 200.44°	latitude: -15.27°

magnitude:

visual	5.36 (observed)	source: 25
photovisual	5.3	source: 2
photographic	5.3	source: 16

spectral information:

spectral class	A2		source: 96
Morgan-Keenan	A2V		source: 25
B-magnitude	5.41 ±0.05	B-V-magnitude	0.05
U-magnitude	5.48 ±0.05	U-B-magnitude	0.07

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 31min 38.755sec	DEC: +3° 44' 3.46''	±0.016 arcsec
position (J2000)	RA: 5h 34min 16.742sec	DEC: +3° 46' 0.5''
proper motion B1950 (FK4)	RA: -0.0023 arcsec/a	DEC: -0.018 arcsec/a	±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0021 arcsec/a	DEC: -0.019 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.3 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	A2
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 6896
Durchmusterung	BD+03 964
Boss General Catalogue	6896
Henry Draper Catalogue	36777