11 Boötis
High proper motion white-hued star in the constellation Boötes From Wikipedia, the free encyclopedia
11 Boötis is a giant star in the northern constellation of Boötes, located about 332 light years away from the Sun. It is near the lower limit of visibility to the naked eye, appearing as a dim, white-hued star with an apparent visual magnitude of 6.23.[1] This body is moving closer to the Earth with a heliocentric radial velocity of −24 km/s.[4]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Boötes[1] |
| Right ascension | 14h 01m 10.48072s[2] |
| Declination | +27° 23′ 11.7452″[2] |
| Apparent magnitude (V) | 6.23[1] |
| Characteristics | |
| Spectral type | A7 III[3] |
| B−V color index | 0.193±0.004[1] |
| Astrometry | |
| Radial velocity (Rv) | −24.0±4.3[4] km/s |
| Proper motion (μ) | RA: −78.929[2] mas/yr Dec.: +18.638[2] mas/yr |
| Parallax (π) | 9.8333±0.0866 mas[2] |
| Distance | 332 ± 3 ly (101.7 ± 0.9 pc) |
| Absolute magnitude (MV) | 1.44[1] |
| Details | |
| Mass | 1.67[5] M☉ |
| Radius | 2.6[2] R☉ |
| Luminosity | 64[2] L☉ |
| Surface gravity (log g) | 3.93[5] cgs |
| Temperature | 7,997±272[5] K |
| Metallicity | −0.02[6] |
| Rotational velocity (v sin i) | 123[7] km/s |
| Age | 328[5] Myr |
| Other designations | |
| 11 Boo, BD+28°2287, HD 122405, HIP 68478, HR 5263, SAO 83130[3] | |
| Database references | |
| SIMBAD | data |
Properties
It has a stellar classification of A7 III,[3] matching an evolved A-type giant star. The star is 328[5] million years old with a projected rotational velocity of 123 km/s.[7] It has 1.67[5] times the mass of the Sun and is radiating 64 times the Sun's luminosity from its photosphere at an effective temperature of 7,997 K.[5]
References
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