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	1 CMi, HR 2820, HD 58187, SAO 96871, BD +11 1578
constellation	Canis Minor

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

position, motion, parallax:

position (J2000)	RA: 7h 24min 58.2sec	DEC: +11° 40' 11''
position (B1900)	RA: 7h 19min 24.8sec	DEC: +11° 51' 56''
proper motion (J2000)	RA: -0.017 arcsec/a	DEC: -0.014 arcsec/a
radial velocity	-1 km/s note: suspected variable radial velocity
rotational velocity	165 km/s (uncertain) (variable)
trigonometric parallax	0.015 arcsec
galactic coordinates	longitude: 206.17°	latitude: 12.67°

magnitude

visual magnitude

5.3 (V on UBV Johnson system)

spectral / color information

spectral class	A5IV
B-V-magnitude	0.1
U-B-magnitude	0.13

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

position, motion, parallax:

position (J2000)	RA: 7h 24min 58.171sec	DEC: +11° 40' 10.26''	±0.35 arcsec	source: 17
proper motion (J2000)	RA: -0.0012 arcsec/a	DEC: -0.015 arcsec/a		source: 25
radial velocity	-1 km/s			source: 25
trigonometric parallax	0.015 arcsec		±0.002 arcsec	source: 25
galactic coord. (B1950)	longitude: 206.17°	latitude: 12.67°

magnitude:

visual	5.3 (observed)	source: 25
photovisual	5.3	source: 2
photographic	5.5	source: 16

spectral information:

spectral class	A2		source: 96
Morgan-Keenan	A5IV		source: 25
B-magnitude	5.4 ±0.05	B-V-magnitude	0.1
U-magnitude	5.53 ±0.05	U-B-magnitude	0.13

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
17	ACRS
Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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 22min 11.545sec	DEC: +11° 46' 8.64''	±0.02 arcsec
position (J2000)	RA: 7h 24min 58.174sec	DEC: +11° 40' 10.51''
proper motion B1950 (FK4)	RA: -0.0012 arcsec/a	DEC: -0.016 arcsec/a	±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0011 arcsec/a	DEC: -0.014 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: 9891
Durchmusterung	BD+11 1578
Boss General Catalogue	9891
Henry Draper Catalogue	58187