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	n Oct, NSV 25707, HR 8254, HD 205478, SAO 257948, CP -77 1510, FK5: 810
constellation	Octans

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

position, motion, parallax:

position (J2000)	RA: 21h 41min 28.5sec	DEC: -77° 23' 24''
position (B1900)	RA: 21h 30min 21.7sec	DEC: -77° 50' 2''
proper motion (J2000)	RA: 0.045 arcsec/a	DEC: -0.24 arcsec/a
radial velocity	34 km/s note: spectroscopic binaries note: orbital data avaible
trigonometric parallax	0.053 arcsec
galactic coordinates	longitude: 314.29°	latitude: -35.19°

magnitude

visual magnitude

3.76 (V on UBV Johnson system)

spectral / color information

spectral class	K0III
B-V-magnitude	1
U-B-magnitude	0.89

double/multiple star system information

separation	0.1 arcsec
component ID	*
note	astrometric binary

note (category: double and multiple data):

A* 3.76 K0III, 2.84y, a = 0.052".

note (category: spectroscopic binaries):

1020d, K 8.0k/s, V0 +34.0k/s, asini 103.

miscellaneous information

note (category: group membership):

Wolf 630 group.

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

position, motion, parallax:

position (J2000)	RA: 21h 41min 28.548sec	DEC: -77° 23' 24.18''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: 0.0137 arcsec/a	DEC: -0.24 arcsec/a		source: 25
radial velocity	34 km/s			source: 25
trigonometric parallax	0.053 arcsec		±0.005 arcsec	source: 25
galactic coord. (B1950)	longitude: 314.29°	latitude: -35.19°

magnitude:

visual	3.76 (observed)	source: 25
photovisual	3.7	source: 2
photographic	4.7	source: 2

spectral information:

spectral class	K0		source: 96
Morgan-Keenan	K0III		source: 25
B-magnitude	4.76 ±0.05	B-V-magnitude	1
U-magnitude	5.65 ±0.05	U-B-magnitude	0.89

double/multiple star system information:

source of data: 25

separation between brightest and second brightest component

0.1 arcsec

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: 21h 35min 59.865sec	DEC: -77° 36' 50.23''	±0.01 arcsec
position (J2000)	RA: 21h 41min 28.687sec	DEC: -77° 23' 24.3''
proper motion B1950 (FK4)	RA: 0.0176 arcsec/a	DEC: -0.239 arcsec/a	±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0155 arcsec/a	DEC: -0.242 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	3.7 (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: 810
Durchmusterung	CP-77 1510
Boss General Catalogue	30289
Henry Draper Catalogue	205478