b Chamaeleontis
| catalogues and names | b Cha, NSV 05532, HR 4674, HD 106911, SAO 256924, FK5: 459 |
| constellation | Chamaeleon |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 12h 18min 20,7sec | DEC: -79° 18' 44'' |
| position (J1900) | RA: 12h 12min 28,6sec | DEC: -78° 45' 25'' |
| proper motion (J2000) | RA: -0,048 arcsec/a | DEC: 0,017 arcsec/a |
| radial velocity | 23 km/s | |
| rotational velocity | 255 km/s (uncertain) (variable) | |
magnitude
| visual magnitude | 4,26 (V on UBV Johnson system) |
spectral / color information
| spectral class | B5Vn |
| B-V-magnitude | -0,12 |
| U-B-magnitude | -0,51 |
| R-I-magnitude | -0,1 |
variability information
| variable star identification | 5532 |
| note (category: variability): | 4.2 - 4.24v. |
miscellaneous information
| note (category: group membership): | Sco-Cen assoc. |
| note (category: miscellaneous): | Old disk population runaway star. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 12h 18min 20,709sec | DEC: -79° 18' 43,93'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0,0172 arcsec/a | DEC: 0,017 arcsec/a | source: 25 | |
| radial velocity | 23 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 301,34° | latitude: -16,54° | ||
| GCI unit vector (J2000) | X: -0,184863 | Y: -0,014829 | Z: -0,982652 | |
magnitude:
| visual | 4,26 (observed) | source: 25 |
| photovisual | 4,4 | source: 2 |
| photographic | 4,3 | source: 2 |
spectral information:
| spectral class | B5 | source: 96 | |
| Morgan-Keenan | B5Vn | source: 25 | |
| B-magnitude | 4,14 ±0,05 | B-V-magnitude | -0,12 |
| U-magnitude | 3,63 ±0,05 | U-B-magnitude | -0,51 |
variability information:
| variability type | 9 |
| var. amplitude | 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 | |
| 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: 12h 15min 22,132sec | DEC: -79° 2' 4,83'' | ±0,008 arcsec |
| position (J2000) | RA: 12h 18min 20,641sec | DEC: -79° 18' 43,89'' | |
| proper motion J1950 (FK4) | RA: -0,0152 arcsec/a | DEC: 0,015 arcsec/a | ±0,002 arcsec/a in RA ±0,002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0178 arcsec/a | DEC: 0,018 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 the "Henry Draper Catalogue". |
spectral information:
| spectral class | B5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 459 |
| Durchmusterung | CP-78 741 |
| Boss General Catalogue | 16775 |
| Henry Draper Catalogue | 106911 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 12h 15min 22,1sec | DEC: -79° 2' 5'' |
variability informations:
| magnitute at max. brightness | 4,24 |
| magnitute at min. brightness | 4,3 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | B6 |
references
| to a study | 630791D (designation: HR 4674) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |