VV Corvi
catalogues and names
| catalogues and names | VV Crv, HR 4822, HD 110318, SAO 157448, BD -12 3676 A, WDS 12413-1301A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 12h 41min 16.2sec | DEC: -13° 0' 54'' | ||
| position (B1900) | RA: 12h 36min 4.6sec | DEC: -12° 27' 58'' | ||
| proper motion (J2000) | RA: -0.127 arcsec/a | DEC: 0.008 arcsec/a | ||
| radial velocity | -11 km/s note: spectroscopic binaries, double lined spectra note: orbital data avaible |
|||
| dynamical parallax | 0.014 arcsec | |||
| galactic coordinates | longitude: 299.1° | latitude: 49.78° | ||
magnitude
| visual magnitude | 5.98 (original HR magnitude) |
spectral / color information
| spectral class | F5V |
| B-V-magnitude | 0.42 |
| U-B-magnitude | 0.1 |
variability information
| variable star identification | 5855 |
| note (category: variability): | Uncertain which component is variable suspect. Combined max. mag. 5.14V. E?, amp. 0.15V. |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 5.4 arcsec |
| mag difference (of double or brightest multiple) | 0.1 |
| component ID | AB |
| note (category: double and multiple data): | Binary with HR 4821. Colors for combined light. Mag. of blend, 5.27V. Component C, 10.5v at 59" optical. |
| note (category: spectroscopic binaries): | 44.4137d, K 25.9k/s, V0 -11.6k/s, asini 15.3. |
miscellaneous information
| note (category: group membership): | Hyades group. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 12h 41min 16.231sec | DEC: -13° 0' 53.5'' | ±1.48 arcsec | source: 29 |
| proper motion (J2000) | RA: -0.0087 arcsec/a | DEC: 0.008 arcsec/a | source: 25 | |
| radial velocity | -11 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 299.11° | latitude: 49.78° | ||
magnitude:
| visual | 5.98 (observed) | source: 25 |
| photovisual | 6 | source: 2 |
| photographic | 6.4 | source: 2 |
spectral information:
| spectral class | F5 | source: 29 | |
| Morgan-Keenan | F5V | source: 25 | |
| B-magnitude | 6.4 ±0.05 | B-V-magnitude | 0.42 |
| U-magnitude | 6.5 ±0.05 | U-B-magnitude | 0.1 |
double/multiple star system information:
| separation between brightest and second brightest component | 5.4 arcsec |
| magnitude difference between brightest and second brightest component | 0 |
| position angle | 312 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5.98 | F5 | HR 4822, HD 110318, SAO 157448 |
| B | 6.08 | F5 | HR 4821, HD 110317, SAO 157447 |
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 | |
| 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 | |
| 29 | SAOJ2000 |
| SAO on FK5 at J2000, 1989 | |
data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)
position and proper motion:
| position (B1950) | RA: 12h 38min 40.251sec | DEC: -12° 44' 26.8'' | ±0.035 arcsec |
| position (J2000) | RA: 12h 41min 16.231sec | DEC: -13° 0' 53.5'' | |
| proper motion B1950 (FK4) | RA: -0.009 arcsec/a | DEC: 0.002 arcsec/a | ±0.007 arcsec/a in RA ±0.004 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0087 arcsec/a | DEC: 0.008 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | F5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 17260 |
| Durchmusterung | BD-12 3676A |
| Boss General Catalogue | 17260 |
| Henry Draper Catalogue | 110318 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 12h 41.3min | DEC: -13° 1' |
| proper motion (J2000) | RA: -0.119 arcsec/a | DEC: -0.002 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 |
| AB | 1828 | often | 299° | 5.4'' | 6 | 6 | F5V F5V | STF1669 |
| 1991 | 312° | - | ||||||
| AC | 1900 | 6 | 235° | 59'' | 6 | 10.5 | - | STF1669 |
| BC | 1909 | 2 | 228° | 58'' | 6.1 | 10.6 | - | STF1669 |
discoverer information:
| discoverer code | discoverer | reference |
| STF1669 | Struve, F.G.W. | - |
notes:
| note | Both A and B are spectroscopic binaries, with periods of 44.4 and 1.46d. Both may also be variable. Proper motion of B -117 +026. |