RU Cassiopeiae
catalogues and names
| catalogues and names | RU Cas, 32 Cas, HR 345, HD 6972, SAO 11617, BD +64 127, FK5: 2078 |
| constellation | Cassiopeia |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 1h 11min 41.4sec | DEC: +65° 1' 8'' | ||
| position (B1900) | RA: 1h 5min 10.3sec | DEC: +64° 29' 14'' | ||
| proper motion (J2000) | RA: 0.023 arcsec/a | DEC: -0.016 arcsec/a | ||
| radial velocity | -2 km/s note: variable radial velocity |
|||
| rotational velocity | 70 km/s (uncertain) (variable) | |||
| galactic coordinates | longitude: 125.07° | latitude: 2.23° | ||
magnitude
| visual magnitude | 5.57 (V on UBV Johnson system) |
spectral / color information
| spectral class | B9IV |
| B-V-magnitude | -0.09 |
| U-B-magnitude | -0.28 |
variability information
| variable star identification | RU Cas |
| note (category: variability): | Cst? 5.50 - 5.60V. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 1h 11min 41.4sec | DEC: +65° 1' 7.75'' | ±0.22 arcsec | source: 15 |
| proper motion (J2000) | RA: 0.0036 arcsec/a | DEC: -0.016 arcsec/a | source: 25 | |
| radial velocity | -2 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 125.07° | latitude: 2.23° | ||
magnitude:
| visual | 5.576 (observed) | source: 31 |
| photovisual | 5.5 | source: 2 |
spectral information:
| spectral class | B8 | source: 96 | |
| Morgan-Keenan | B9IV | source: 25 | |
| B-magnitude | 5.48 ±0.05 | B-V-magnitude | -0.09 |
| U-magnitude | 5.2 ±0.05 | U-B-magnitude | -0.28 |
variability information:
| variability type | 999 |
| var. amplitude | 0.1 |
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 | |
| 30 | GCVS, 4th edition |
| Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88 | |
| 31 | CRM' (non-GCVS variable data) |
| Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 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: 1h 8min 24.582sec | DEC: +64° 45' 12.98'' | ±0.014 arcsec |
| position (J2000) | RA: 1h 11min 41.425sec | DEC: +65° 1' 7.64'' | |
| proper motion B1950 (FK4) | RA: 0.0039 arcsec/a | DEC: -0.01 arcsec/a | ±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0038 arcsec/a | DEC: -0.016 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | B8 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 1434 |
| Durchmusterung | BD+64 127 |
| Boss General Catalogue | 1434 |
| Henry Draper Catalogue | 6972 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 1h 8min 24.6sec | DEC: +64° 45' 13'' |
variability informations:
| variability type | CST: |
| magnitute at max. brightness | 5.5 |
| magnitute at min. brightness | 5.6 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | B9IV |
references
| to a chart/photograph | Vol. I GCVS (see Kholopov et al. 1985-1988) |
miscanellous
| ID in the GCVS catalogue | 18/13 |
| constellation | Cassiopeia |
| notes on existence | The star is equivalent to '0180014 RV'. |
variability type description
| variability type | description |
| CST | Nonvariable stars, formerly suspected to be variable and hastily designated. Further observations have not confirmed their variability. |