j2Ceti
catalogues and names
| catalogues and names | j2Cet, NSV 00316, 19 Cet, HR 235, HD 4813, SAO 147470, BD -11 153, FK5: 30 |
| constellation | Cetus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 0h 50min 7.6sec | DEC: -10° 38' 40'' | ||
| position (B1900) | RA: 0h 45min 7.1sec | DEC: -11° 10' 58'' | ||
| proper motion (J2000) | RA: -0.226 arcsec/a | DEC: -0.229 arcsec/a | ||
| radial velocity | 8 km/s note: variable radial velocity |
|||
| rotational velocity | 0 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.065 arcsec | |||
| galactic coordinates | longitude: 121.81° | latitude: -73.51° | ||
magnitude
| visual magnitude | 5.19 (V on UBV Johnson system) |
spectral / color information
| spectral class | F7IV-V |
| B-V-magnitude | 0.5 |
| U-B-magnitude | -0.02 |
| R-I-magnitude |
variability information
| variable star identification | 316 |
| note (category: variability): | 5.15 - 5.24V. |
miscellaneous information
| note (category: group membership): | Sirius group; UMa stream. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 0h 50min 7.596sec | DEC: -10° 38' 39.54'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0153 arcsec/a | DEC: -0.229 arcsec/a | source: 25 | |
| radial velocity | 8 km/s | source: 25 | ||
| trigonometric parallax | 0.065 arcsec | ±0.006 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 121.84° | latitude: -73.51° | ||
magnitude:
| visual | 5.19 (observed) | source: 25 |
| photovisual | 5.2 | source: 2 |
| photographic | 5.7 | source: 2 |
spectral information:
| spectral class | F5 | source: 96 | |
| Morgan-Keenan | F7IV-V | source: 25 | |
| B-magnitude | 5.69 ±0.05 | B-V-magnitude | 0.5 |
| U-magnitude | 5.67 ±0.05 | U-B-magnitude | -0.02 |
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: 0h 47min 37.288sec | DEC: -10° 54' 47.65'' | ±0.006 arcsec |
| position (J2000) | RA: 0h 50min 7.595sec | DEC: -10° 38' 39.31'' | |
| proper motion B1950 (FK4) | RA: -0.0156 arcsec/a | DEC: -0.223 arcsec/a | ±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0153 arcsec/a | DEC: -0.226 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.2 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | F5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 30 |
| Durchmusterung | BD-11 153 |
| Boss General Catalogue | 1003 |
| Henry Draper Catalogue | 4813 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 0h 47min 37.3sec | DEC: -10° 54' 48'' |
variability informations:
| magnitute at max. brightness | 5.15 |
| magnitute at min. brightness | 5.24 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | F8 |
references
| to a study | 730774D (designation: 684) |