g Chamaeleontis
catalogues and names | g Cha, NSV 04913, HR 4174, HD 92305, SAO 256731, FK5: 401 |
constellation | Chamaeleon |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
position (J2000) | RA: 10h 35min 28,1sec | DEC: -78° 36' 28'' |
position (J1900) | RA: 10h 34min 17,3sec | DEC: -78° 5' 21'' |
proper motion (J2000) | RA: -0,042 arcsec/a | DEC: 0,014 arcsec/a |
radial velocity | -22 km/s | |
trigonometric parallax | 0,009 arcsec |
magnitude
visual magnitude | 4,11 (V on UBV Johnson system) |
spectral / color information
spectral class | M0III |
B-V-magnitude | 1,58 |
U-B-magnitude | 1,95 |
R-I-magnitude | 0,97 |
variability information
variable star identification | 4913 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
position (J2000) | RA: 10h 35min 28,071sec | DEC: -78° 36' 27,97'' | ±0,06 arcsec | source: 15 |
proper motion (J2000) | RA: -0,0142 arcsec/a | DEC: 0,014 arcsec/a | source: 25 | |
radial velocity | -22 km/s | source: 25 | ||
trigonometric parallax | 0,009 | ±0,001 arcsec | source: 25 | |
galactic coord. (B1950) | longitude: 296,28° | latitude: -17,53° | ||
GCI unit vector (J2000) | X: -0,18424 | Y: 0,071214 | Z: -0,980298 |
magnitude:
visual | 4,11 (observed) | source: 25 |
photovisual | 4,1 | source: 2 |
spectral information:
spectral class | M0 | source: 96 | |
Morgan-Keenan | M0III | source: 25 | |
B-magnitude | 5,69 ±0,05 | B-V-magnitude | 1,58 |
U-magnitude | 7,64 ±0,05 | U-B-magnitude | 1,95 |
variability information:
variability type | 9 |
var. amplitude | 0,4 |
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 (J1950) | RA: 10h 34min 53,647sec | DEC: -78° 20' 53,72'' | ±0,011 arcsec |
position (J2000) | RA: 10h 35min 28,02sec | DEC: -78° 36' 27,65'' | |
proper motion J1950 (FK4) | RA: -0,013 arcsec/a | DEC: 0,016 arcsec/a | ±0,003 arcsec/a in RA ±0,003 arcsec/a in DEC |
proper motion J2000 (FK5) | RA: -0,0148 arcsec/a | DEC: 0,018 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 | M0 |
source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
source catalogue | FK4, catalogue number: 401 |
Durchmusterung | CP-77 622 |
Boss General Catalogue | 14604 |
Henry Draper Catalogue | 92305 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
position (J1950) | RA: 10h 34min 53,6sec | DEC: -78° 20' 54'' |
variability informations:
magnitute at max. brightness | 5,69 |
magnitute amplitude | 0,4 |
photometric system |
spectral information
spectral class | M0 |
references
to a study | 631809D (designation: HR 4174) |
miscanellous
There are notes in the published catalog (Kukarkin et al.(1982)). |