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

HR 7012, HD 172555, SAO 254358, CP -64 3948, FK5: 3489

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

position, motion, parallax:

position (J2000)	RA: 18h 45min 26.9sec	DEC: -64° 52' 17''
position (B1900)	RA: 18h 35min 37.9sec	DEC: -64° 57' 54''
proper motion (J2000)	RA: 0.027 arcsec/a	DEC: -0.149 arcsec/a
radial velocity	2 km/s
rotational velocity	134 km/s (uncertain) (variable)
trigonometric parallax	0.035 arcsec
galactic coordinates	longitude: 330.57°	latitude: -23.76°

magnitude

visual magnitude

4.79 (V on UBV Johnson system)

spectral / color information

spectral class	A5IV-V
B-V-magnitude	0.2
U-B-magnitude	0.08

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

position, motion, parallax:

position (J2000)	RA: 18h 45min 26.853sec	DEC: -64° 52' 16.5''	±0.22 arcsec	source: 15
proper motion (J2000)	RA: 0.0042 arcsec/a	DEC: -0.149 arcsec/a		source: 25
radial velocity	2 km/s			source: 25
trigonometric parallax	0.035 arcsec		±0.003 arcsec	source: 25
galactic coord. (B1950)	longitude: 330.57°	latitude: -23.76°

magnitude:

visual	4.79 (observed)	source: 25
photovisual	4.9	source: 2
photographic	5	source: 2

spectral information:

spectral class	A2		source: 96
Morgan-Keenan	A5IV-V		source: 25
B-magnitude	4.99 ±0.05	B-V-magnitude	0.2
U-magnitude	5.07 ±0.05	U-B-magnitude	0.08

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: 18h 40min 32.655sec	DEC: -64° 55' 16.21''	±0.019 arcsec
position (J2000)	RA: 18h 45min 26.672sec	DEC: -64° 52' 17.1''
proper motion B1950 (FK4)	RA: 0.0035 arcsec/a	DEC: -0.156 arcsec/a	±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0024 arcsec/a	DEC: -0.157 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.9 (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: 25604
Durchmusterung	CP-64 3948
Boss General Catalogue	25604
Henry Draper Catalogue	172555