catalogues and names

The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

Combined General Catalogue of Variable Stars (suspected variables)

catalogues and names

catalogues and names	h Crv, NSV 05690, 8 Crv, HR 4775, HD 109085, SAO 157345, BD -15 3489
constellation	Corvus

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

position, motion, parallax:

position (J2000)	RA: 12h 32min 4.2sec	DEC: -16° 11' 46''
position (B1900)	RA: 12h 26min 54.9sec	DEC: -15° 38' 32''
proper motion (J2000)	RA: -0.426 arcsec/a	DEC: -0.061 arcsec/a
radial velocity	-4 km/s note: spectroscopic binaries, double lined spectra
rotational velocity	59 km/s (uncertain) (variable)
trigonometric parallax	0.052 arcsec
galactic coordinates	longitude: 296.19°	latitude: 46.42°

magnitude

visual magnitude

4.31 (V on UBV Johnson system)

spectral / color information

spectral class	F2III-IV
B-V-magnitude	0.38
U-B-magnitude	0.01
R-I-magnitude

variability information

variable star identification

5690

note (category: variability):

Delta Sct?

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

position, motion, parallax:

position (J2000)	RA: 12h 32min 4.209sec	DEC: -16° 11' 45.88''	±0.19 arcsec	source: 16
proper motion (J2000)	RA: -0.0297 arcsec/a	DEC: -0.064 arcsec/a		source: 25
radial velocity	-4 km/s			source: 25
trigonometric parallax	0.052 arcsec		±0.005 arcsec	source: 25
galactic coord. (B1950)	longitude: 296.2°	latitude: 46.42°

magnitude:

visual	4.31 (observed)	source: 25
photovisual	3.9	source: 16
photographic	4.7	source: 2

spectral information:

spectral class	F0		source: 96
Morgan-Keenan	F2III-IV		source: 25
B-magnitude	4.69 ±0.05	B-V-magnitude	0.38
U-magnitude	4.7 ±0.05	U-B-magnitude	0.01

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: 12h 29min 29.361sec	DEC: -15° 55' 9.82''	±0.015 arcsec
position (J2000)	RA: 12h 32min 4.221sec	DEC: -16° 11' 46.14''
proper motion B1950 (FK4)	RA: -0.0298 arcsec/a	DEC: -0.066 arcsec/a	±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0296 arcsec/a	DEC: -0.061 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.4 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	F0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 17087
Durchmusterung	BD-15 3489
Boss General Catalogue	17087
Henry Draper Catalogue	109085

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (equinox 1950.0)

RA: 12h 29min 29.4sec

DEC: -15° 55' 10''

variability informations:

magnitute at max. brightness	4.29
magnitute at min. brightness	4.32
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

F0

references

to a study

660820D (designation: HR 4775)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).