HR 3050
catalogues and names
| catalogues and names | HR 3050, HD 63799, SAO 116014, BD +3 1818, WDS 07508+0317 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 7h 50min 47.4sec | DEC: +3° 16' 38'' | ||
| position (B1900) | RA: 7h 45min 32.5sec | DEC: +3° 31' 53'' | ||
| proper motion (J2000) | RA: 0.054 arcsec/a | DEC: -0.031 arcsec/a | ||
| radial velocity | -48 km/s | |||
| dynamical parallax | 0.003 arcsec | |||
| galactic coordinates | longitude: 216.83° | latitude: 14.69° | ||
magnitude
| visual magnitude | 6.18 (V on UBV Johnson system) |
spectral / color information
| spectral class | K1III |
| B-V-magnitude | 1.12 |
| U-B-magnitude | 1.01 |
double/multiple star system information
| separation | 0.2 arcsec |
| mag difference (of double or brightest multiple) | 0.2 |
| note (category: double and multiple data): | Binary, 211.8y, e 0.17, a 0.265", i 59.1d, mag. diff 0.2. |
miscellaneous information
| note (category: group membership): | Gamma Leo group. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 7h 50min 47.396sec | DEC: +3° 16' 38.18'' | ±0.43 arcsec | source: 16 |
| proper motion (J2000) | RA: 0.0043 arcsec/a | DEC: -0.027 arcsec/a | source: 25 | |
| radial velocity | -48 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 216.83° | latitude: 14.69° | ||
magnitude:
| visual | 6.18 (observed) | source: 25 |
| photovisual | 6.3 | source: 2 |
| photographic | 7.2 | source: 16 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | K1III | source: 25 | |
| B-magnitude | 7.3 ±0.05 | B-V-magnitude | 1.12 |
| U-magnitude | 8.31 ±0.05 | U-B-magnitude | 1.01 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.1 arcsec |
| magnitude difference between brightest and second brightest component | 0 |
| position angle | 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 | |
| 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: 7h 48min 9.968sec | DEC: +3° 24' 20.32'' | ±0.058 arcsec |
| position (J2000) | RA: 7h 50min 47.353sec | DEC: +3° 16' 38.03'' | |
| proper motion B1950 (FK4) | RA: 0.0034 arcsec/a | DEC: -0.033 arcsec/a | ±0.01 arcsec/a in RA ±0.011 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0036 arcsec/a | DEC: -0.031 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.3 (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: 10592 |
| Durchmusterung | BD+03 1818 |
| Boss General Catalogue | 10592 |
| Henry Draper Catalogue | 63799 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 7h 50.8min | DEC: +3° 17' |
| proper motion (J2000) | RA: 0.055 arcsec/a | DEC: -0.035 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 |
| - | 1914 | 34 | 182° | 0.2'' | 7.1 | 7.1 | K1III | A 2880 |
| 1990 | 1° | 0.1'' |
discoverer information:
| discoverer code | discoverer | reference |
| A 2880 | Aitken, R.G. | - |
notes:
| note | P = 102yr., a = 0.16", motion direct. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 7h 45.6min | DEC: +3° 32' |
magnitudes, spectral classes, orbital elements:
| author: | P. Baize |
| date of observation: | 1976 |
| magnitude of component A: | 6.9 |
| magnitude of component B: | 6.9 |
| spectral class component B: | K1III |
| spectral class component B: | K1III |
| period [y]: | 211.8 |
| semi-major axis [arcsec]: | 0.265 |
| inclination [deg]: | 59.1 |
| node [deg]: | 55.5 |
| eccentricity: | 0.17 |
| time of periastron passage: | 1976 |
| dates of ephemeris: | 1980-2000 |
| grade: | preliminary |
| reference: | Astron. Astrophys. Suppl. 44, 199; 1981. |
| other name(s) | A 2880 |