HR 8696
catalogues and names
| catalogues and names | HR 8696, HD 216380, SAO 20281, BD +60 2450, WDS 22514+6142A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 22h 51min 22.8sec | DEC: +61° 41' 49'' | ||
| position (B1900) | RA: 22h 47min 28.2sec | DEC: +61° 9' 54'' | ||
| proper motion (J2000) | RA: 0.108 arcsec/a | DEC: 0.044 arcsec/a | ||
| radial velocity | 2 km/s | |||
| trigonometric parallax | 0.005 arcsec | |||
| galactic coordinates | longitude: 109.2° | latitude: 2.07° | ||
| note (category: dynamical parallaxes): | 0.010". |
magnitude
| visual magnitude | 5.6 (V on UBV Johnson system) |
spectral / color information
| spectral class | G8III-IV+G2IV |
| B-V-magnitude | 0.78 |
| U-B-magnitude | 0.39 |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 1.6 arcsec |
| mag difference (of double or brightest multiple) | 1.2 |
| component ID | AB |
| note (category: double and multiple data): | AB binary. B is G2IV. Combined mag., colors. |
miscellaneous information
| note (category: group membership): | Hyades group. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 22h 51min 22.622sec | DEC: +61° 41' 48.37'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.0145 arcsec/a | DEC: 0.042 arcsec/a | source: 25 | |
| radial velocity | 2 km/s | source: 25 | ||
| trigonometric parallax | 0.005 arcsec | - | source: 25 | |
| galactic coord. (B1950) | longitude: 109.21° | latitude: 2.07° | ||
magnitude:
| visual | 5.6 (observed) | source: 25 |
| photovisual | 5.8 | source: 2 |
| photographic | 6.4 | source: 16 |
spectral information:
| spectral class | G0 | source: 96 | |
| Morgan-Keenan | G8III-IV+G2IV | source: 25 | |
| B-magnitude | 6.38 ±0.05 | B-V-magnitude | 0.78 |
| U-magnitude | 6.77 ±0.05 | U-B-magnitude | 0.39 |
double/multiple star system information:
| separation between brightest and second brightest component | 1.4 arcsec |
| magnitude difference between brightest and second brightest component | 1.3 |
| position angle | 286 ° |
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 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 1991 | |
| 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 | |
| 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 49min 25.129sec | DEC: +61° 25' 50.3'' | ±0.024 arcsec |
| position (J2000) | RA: 22h 51min 22.768sec | DEC: +61° 41' 48.58'' | |
| proper motion B1950 (FK4) | RA: 0.0148 arcsec/a | DEC: 0.049 arcsec/a | ±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0151 arcsec/a | DEC: 0.044 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.1 (accuracy: 1 decimal) |
| source of visual magnitude data | Based on Durchmusterung magnitudes and visual estimates |
spectral information:
| spectral class | G0 |
| 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: 31884 |
| Durchmusterung | BD+60 2450 |
| Boss General Catalogue | 31884 |
| Henry Draper Catalogue | 216380 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 22h 51.4min | DEC: +61° 42' |
| proper motion (J2000) | RA: 0.103 arcsec/a | DEC: 0.042 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 | 1832 | often | 319° | 2'' | 6.1 | 7.4 | - | STF2950 |
| 1992 | 286° | 1.4'' | ||||||
| AC | 1910 | 9 | 354° | 39.2'' | 5.8 | 11.05 | - | STF2950 |
discoverer information:
| discoverer code | discoverer | reference |
| STF2950 | Struve, F.G.W. | - |
notes:
| note | Spectrum composite; G8III-IV+G2IV. |