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	l Crt, 13 Crt, HR 4395, HD 98991, SAO 156646, BD -17 3367
constellation	Crater

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

position, motion, parallax:

position (J2000)	RA: 11h 23min 21.9sec	DEC: -18° 46' 48''
position (B1900)	RA: 11h 18min 24.3sec	DEC: -18° 13' 49''
proper motion (J2000)	RA: -0.312 arcsec/a	DEC: -0.034 arcsec/a
radial velocity	11 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible
rotational velocity	14 km/s (uncertain) (variable)
trigonometric parallax	0.023 arcsec
galactic coordinates	longitude: 275.6°	latitude: 39.37°

magnitude

visual magnitude

5.09 (V on UBV Johnson system)

spectral / color information

spectral class	F5III
B-V-magnitude	0.42
U-B-magnitude	-0.06

double/multiple star system information

note (category: spectroscopic binaries):

1940d, K 6.9k/s, V0 +13.0k/s, asini 144. Orbit questioned by Morbey and Griffin (1987, ApJ, 317, 343). Period may be correct, but large errors in elements. Orbital eccentricity may be high. Unresolved by speckle interferometry 1982.17 and 1983.10.

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

position, motion, parallax:

position (J2000)	RA: 11h 23min 21.875sec	DEC: -18° 46' 48.16''	±0.19 arcsec	source: 16
proper motion (J2000)	RA: -0.0222 arcsec/a	DEC: -0.033 arcsec/a		source: 25
radial velocity	11 km/s			source: 25
trigonometric parallax	0.023 arcsec		±0.002 arcsec	source: 25
galactic coord. (B1950)	longitude: 275.62°	latitude: 39.37°

magnitude:

visual	5.09 (observed)	source: 25
photovisual	5	source: 16
photographic	5.5	source: 2

spectral information:

spectral class	F2		source: 96
Morgan-Keenan	F5III		source: 25
B-magnitude	5.51 ±0.05	B-V-magnitude	0.42
U-magnitude	5.45 ±0.05	U-B-magnitude	-0.06

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: 11h 20min 52.949sec	DEC: -18° 30' 18.07''	±0.021 arcsec
position (J2000)	RA: 11h 23min 21.897sec	DEC: -18° 46' 48.44''
proper motion B1950 (FK4)	RA: -0.0222 arcsec/a	DEC: -0.039 arcsec/a	±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.022 arcsec/a	DEC: -0.034 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.1 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	F2
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 15644
Durchmusterung	BD-17 3367
Boss General Catalogue	15644
Henry Draper Catalogue	98991