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	Alkes, a Crt, 7 Crt, HR 4287, HD 95272, SAO 156375, BD -17 3273, FK5: 1283
constellation	Crater

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

note (category: star names):

Alkes.

position, motion, parallax:

position (J2000)	RA: 10h 59min 46.5sec	DEC: -18° 17' 56''
position (B1900)	RA: 10h 54min 54.1sec	DEC: -17° 45' 58''
proper motion (J2000)	RA: -0.46 arcsec/a	DEC: 0.13 arcsec/a
radial velocity	47 km/s note: variable radial velocity
rotational velocity	<19 km/s
trigonometric parallax	0.031 arcsec
galactic coordinates	longitude: 269.06°	latitude: 37.12°

magnitude

visual magnitude

4.08 (V on UBV Johnson system)

spectral / color information

spectral class	K0+III
B-V-magnitude	1.09
U-B-magnitude	1
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

miscellaneous information

note (category: group membership):

61 Cyg group.

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

position, motion, parallax:

position (J2000)	RA: 10h 59min 46.47sec	DEC: -18° 17' 55.65''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: -0.0323 arcsec/a	DEC: 0.13 arcsec/a		source: 25
radial velocity	47 km/s			source: 25
trigonometric parallax	0.031 arcsec		±0.003 arcsec	source: 25
galactic coord. (B1950)	longitude: 269.07°	latitude: 37.12°

magnitude:

visual	4.08 (observed)	source: 25
photovisual	4.2	source: 2
photographic	5.2	source: 2

spectral information:

spectral class	K0		source: 96
Morgan-Keenan	K0+III		source: 25
B-magnitude	5.17 ±0.05	B-V-magnitude	1.09
U-magnitude	6.17 ±0.05	U-B-magnitude	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: 10h 57min 20.138sec	DEC: -18° 1' 55.62''	±0.006 arcsec
position (J2000)	RA: 10h 59min 46.465sec	DEC: -18° 17' 55.66''
proper motion B1950 (FK4)	RA: -0.0326 arcsec/a	DEC: 0.124 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0324 arcsec/a	DEC: 0.13 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.2 (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: 1283
Durchmusterung	BD-17 3273
Boss General Catalogue	15106
Henry Draper Catalogue	95272