g Crateris


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. The Washington Visual Double Star Catalog, 1996.0


catalogues and names g Crt, 15 Crt, HR 4405, HD 99211, SAO 156661, FK5: 431, WDS 11249-1741
constellation Crater

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


position, motion, parallax:

position (J2000) RA: 11h 24min 52,9sec DEC: -17 41' 2''
position (J1900) RA: 11h 19min 53,1sec DEC: -17 8' 5''
proper motion (J2000) RA: -0,098 arcsec/a DEC: 0,004 arcsec/a
radial velocity 1 km/s
note: suspected variable radial velocity
rotational velocity 131 km/s (uncertain) (variable)
trigonometric parallax 0,028 arcsec
note (category: dynamical parallaxes): 0.017".

magnitude

visual magnitude 4,08
(V on UBV Johnson system)

spectral / color information

spectral class A5V
B-V-magnitude 0,21
U-B-magnitude 0,11
R-I-magnitude 0,11

double/multiple star system information

separation 5,3 arcsec
mag difference (of double or brightest multiple) 4,8

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

position, motion, parallax:

position (J2000) RA: 11h 24min 52,924sec DEC: -17 41' 2,47'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0069 arcsec/a DEC: 0,004 arcsec/a source: 25
radial velocity 1 km/s source: 25
trigonometric parallax 0,028 0,003 arcsec source: 25
galactic coord. (B1950) longitude: 275,42 latitude: 40,52
GCI unit vector (J2000) X: -0,941583 Y: 0,14542 Z: -0,303767

magnitude:

visual 4,08 (observed) source: 25
photovisual 4,1 source: 2
photographic 4,3 source: 2

spectral information:

spectral class A5 source: 96
Morgan-Keenan A5V source: 25
B-magnitude 4,29 0,05 B-V-magnitude 0,21
U-magnitude 4,4 0,05 U-B-magnitude 0,11

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 5,3 arcsec
magnitude difference between brightest and second brightest component 3,8
position angle 94

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
19 WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
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 (J1950) RA: 11h 22min 22,85sec DEC: -17 24' 32,96'' 0,006 arcsec
position (J2000) RA: 11h 24min 52,92sec DEC: -17 41' 2,47''
proper motion J1950 (FK4) RA: -0,0072 arcsec/a DEC: -0,001 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0069 arcsec/a DEC: 0,004 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,1 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class A5
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 431
Durchmusterung BD-16 3244
Boss General Catalogue 15669
Henry Draper Catalogue 99211

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000) RA: 11h 24,9min DEC: -17 41'
proper motion (J2000) RA: -0,098 arcsec/a DEC: 0,004 arcsec/a

double/multiple star system information:

component year number of measures position angle angular separation magnitude of 1st component magnitude of 2nd component spectral class(es) discoverer code
- 1877 16 98 5,2'' 4,1 7,9 A5V HJ 840
1968 94 5,3''

discoverer information:

discoverer code discoverer reference
HJ 840 Herschel, J. -

notes:

note Gamma Crt.