h Capricorni
catalogues and names
| catalogues and names | h Cap, 22 Cap, HR 8060, HD 200499, SAO 189986, BD -20 6115, WDS 21044-1951 |
| constellation | Capricornus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 21h 4min 24.3sec | DEC: -19° 51' 18'' | ||
| position (B1900) | RA: 20h 58min 42.9sec | DEC: -20° 15' 1'' | ||
| proper motion (J2000) | RA: -0.034 arcsec/a | DEC: -0.037 arcsec/a | ||
| radial velocity | 24 km/s note: variable radial velocity |
|||
| rotational velocity | 71 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.055 arcsec | |||
| galactic coordinates | longitude: 28.05° | latitude: -37.86° | ||
magnitude
| visual magnitude | 4.84 (V on UBV Johnson system) |
spectral / color information
| spectral class | A5V |
| B-V-magnitude | 0.17 |
| U-B-magnitude | 0.09 |
| R-I-magnitude |
double/multiple star system information
| separation | 0.3 arcsec |
| mag difference (of double or brightest multiple) | 1.3 |
| note | Worley (1978) update of the IDS |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 21h 4min 24.303sec | DEC: -19° 51' 18.56'' | ±0.19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0.0024 arcsec/a | DEC: -0.052 arcsec/a | source: 25 | |
| radial velocity | 24 km/s | source: 25 | ||
| trigonometric parallax | 0.055 arcsec | ±0.005 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 28.06° | latitude: -37.86° | ||
magnitude:
| visual | 4.84 (observed) | source: 25 |
| photovisual | 4.8 | source: 16 |
| photographic | 5 | source: 2 |
spectral information:
| spectral class | A3 | source: 96 | |
| Morgan-Keenan | A5V | source: 25 | |
| B-magnitude | 5.01 ±0.05 | B-V-magnitude | 0.17 |
| U-magnitude | 5.1 ±0.05 | U-B-magnitude | 0.09 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.3 arcsec |
| magnitude difference between brightest and second brightest component | 1.3 |
| position angle | 90 ° |
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 | |
| 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: 21h 1min 33.704sec | DEC: -20° 3' 14.1'' | ±0.009 arcsec |
| position (J2000) | RA: 21h 4min 24.293sec | DEC: -19° 51' 18.03'' | |
| proper motion B1950 (FK4) | RA: -0.0025 arcsec/a | DEC: -0.035 arcsec/a | ±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0024 arcsec/a | DEC: -0.037 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.9 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A3 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 29419 |
| Durchmusterung | BD-20 6115 |
| Boss General Catalogue | 29419 |
| Henry Draper Catalogue | 200499 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 21h 4.4min | DEC: -19° 51' |
| proper motion (J2000) | RA: -0.033 arcsec/a | DEC: -0.039 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 |
| - | 1951 | 10 | 355° | 0.3'' | 5.2 | 6.5 | A5V | FIN 328 |
| 1992 | 90° | - |
discoverer information:
| discoverer code | discoverer | reference |
| FIN 328 | Finsen, W.S. | - |
notes:
| note | Eta Cap. P = 12.8yr., a = 0.31", motion retrograde. |