11 Comae Berenices
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Coma Berenices |
| Right ascension | 12h 20m 43.025580s[1] |
| Declination | +17° 47′ 34.3393″[1] |
| Apparent magnitude (V) | 4.72[2] (4.89 + 12.9)[3] |
| Characteristics | |
| Spectral type | K0 III[4] or G8+ III Fe-1[5] |
| B−V color index | 1.010±0.001[2] |
| Absolute magnitude (MV) | −0.02[2] |
| Details Gyr | |
| Database references | |
| SIMBAD | data |
11 Comae Berenices is a
apparent visual magnitude of 4.72.[2] This body is moving away from the Sun with a heliocentric radial velocity of +44 km/s.[2]
The primary component is an aging
″ along a position angle of 44°, as of 2007.[8]
Planetary system
A substellar companion was discovered orbiting the primary star in 2007 using the
radial velocity method. It has a period of 326 days with minimum mass of about 19.4 Jupiter masses and is orbiting around 1.3 AU from the host star with an eccentricity of 0.23. The object's mass is well within the range of deuterium-fusing brown dwarfs.[9][10]
| Companion | b | ≥19.4±1.5 MJ | 1.29±0.05 | 326.03±0.32 days | 0.231±0.005 | 2007 |
References
- ^ .
- ^ S2CID 119257644.
- ^ S2CID 14878976.
- ^ S2CID 275132.
- ^ S2CID 123149047.
- ^ S2CID 53666931.
- ^ "* 11 Com". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 September 2012.
- doi:10.1086/323920.
- S2CID 18039163.
- ^ "Planet 11 Com b". Extrasolar Planets Encyclopaedia. 2023.
| Stars |
| ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
| |||||||||||||
| |||||||||||||
| Galaxies |
| ||||||||||||
| |||||||||||||
| |||||||||||||
