HR 8631
catalogues and names
| catalogues and names | HR 8631, HD 214850, SAO 108094, BD +13 4971, WDS 22409+1433A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 22h 40min 52.7sec | DEC: +14° 32' 58'' | ||
| position (B1900) | RA: 22h 35min 55.3sec | DEC: +14° 1' 25'' | ||
| proper motion (J2000) | RA: 0.268 arcsec/a | DEC: 0.144 arcsec/a | ||
| radial velocity | -10 km/s note: variable radial velocity |
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| trigonometric parallax | 0.032 arcsec | |||
| galactic coordinates | longitude: 81.67° | latitude: -37.65° | ||
| note (category: dynamical parallaxes): | 0.027". |
magnitude
| visual magnitude | 5.71 (V on UBV Johnson system) |
spectral / color information
| spectral class | G4V |
| B-V-magnitude | 0.72 |
| U-B-magnitude | 0.22 |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 0.4 arcsec |
| mag difference (of double or brightest multiple) | 0.5 |
| component ID | AB |
| note (category: double and multiple data): | AB 6.26 G3V, 6.81 G8V, 20.93y, a = 0.30". Combined mag., colors. Perhaps invisible companion, period 15.8y. ADS 16173C, 11.6v at 72". Faint CPM, 14.9v at 4.5' N. prec. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 22h 40min 52.7sec | DEC: +14° 32' 57.12'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: 0.019 arcsec/a | DEC: 0.134 arcsec/a | source: 25 | |
| radial velocity | -10 km/s | source: 25 | ||
| trigonometric parallax | 0.032 arcsec | ±0.003 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 81.68° | latitude: -37.65° | ||
magnitude:
| visual | 5.71 (observed) | source: 25 |
| photovisual | 5.8 | source: 2 |
| photographic | 6.5 | source: 16 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | G4V | source: 25 | |
| B-magnitude | 6.43 ±0.05 | B-V-magnitude | 0.72 |
| U-magnitude | 6.65 ±0.05 | U-B-magnitude | 0.22 |
double/multiple star system information:
| magnitude difference between brightest and second brightest component | 0.6 |
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 | |
| 16 | PPM North and PPM South Catalogs and PPM Supplement |
| Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993 | |
| 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 | |
| 52 | PPMN-HP subset |
| PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H) | |
| 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: 22h 38min 23.864sec | DEC: +14° 17' 9.39'' | ±0.02 arcsec |
| position (J2000) | RA: 22h 40min 52.655sec | DEC: +14° 32' 57.78'' | |
| proper motion B1950 (FK4) | RA: 0.0184 arcsec/a | DEC: 0.148 arcsec/a | ±0.004 arcsec/a in RA ±0.004 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0184 arcsec/a | DEC: 0.144 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | G5 |
| 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: 31655 |
| Durchmusterung | BD+13 4971 |
| Boss General Catalogue | 31655 |
| Henry Draper Catalogue | 214850 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 22h 40.9min | DEC: +14° 33' |
| proper motion (J2000) | RA: 0.274 arcsec/a | DEC: 0.136 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 | 1903 | often | ° | '' | 6.2 | 6.8 | G4V | HO 296 |
| AB-C | 1910 | 2 | 234° | 68.2'' | 5.8 | 11.6 | - | HO 296 |
| 1924 | 235° | 72.2'' | ||||||
| AB-D | 1960 | 1 | 92° | 270'' | 6.7 | 15.8 | - | LDS6385 |
discoverer information:
| discoverer code | discoverer | reference |
| HO 296 | Hough, G.W. | - |
| LDS6385 | - | - |
notes:
| note | P = 20.8yr., a = 0.291", motion retrograde. There is a faint common proper motion companion at 4.5', G 67-12. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 22h 35.9min | DEC: +14° 1' |
magnitudes, spectral classes, orbital elements:
| author: | P. Baize |
| date of observation: | 1955 |
| magnitude of component A: | 6.26 |
| magnitude of component B: | 6.26 |
| spectral class component B: | G4V |
| spectral class component B: | G4V |
| period [y]: | 20.93 |
| semi-major axis [arcsec]: | 0.3 |
| inclination [deg]: | 131.4 |
| node [deg]: | 69.8 |
| eccentricity: | 0.72 |
| time of periastron passage: | 1942 |
| dates of ephemeris: | 1955-1967 |
| grade: | good |
| reference: | J. Observateurs 40, 20; 1957. |
| notes | The star G 67-12 (mag. 14.88, 270") shares the proper motion. |
| other name(s) | HO 296 |