  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Coma Berenices |
| Right ascension | 13h 07m 10.72992s[1] |
| Declination | +27° 37′ 29.0554″[1] |
| Apparent magnitude (V) | 4.80±0.02[2] |
| Characteristics | |
| Evolutionary stage | red giant branch[1] |
| Spectral type | K5-III[3] |
| B−Vcolor index | 1.482±0.003[4] |
| Astrometry | |
| Radial velocity (Rv) | −15.89±0.13[1] km/s |
| Proper motion (μ) | RA: +34.155mas/yr[1] Dec.: −69.539mas/yr[1] |
| Parallax (π) | 8.5989±0.1327 mas[1] |
| Distance | 379 ± 6 ly (116 ± 2 pc) |
| Absolute magnitude (MV) | −0.04[5] |
| Details[2] | |
| Mass | 1.21±0.19 M☉ |
| Radius | 33.75±0.77 R☉ |
| Luminosity | 323.0±21.7 L☉ |
| Surface gravity (log g) | 1.70 cgs |
| Temperature | 4,211±54 K |
| Metallicity[Fe/H] | −0.09 dex |
| Rotational velocity (v sin i) | 1.8[6] km/s |
| Age | 4.51±1.84 Gyr |
| Other designations | |
| 36 Com,BD+28°2185,FK5 3045,HD 113996,HIP 64022,HR 4954,SAO 82659[7] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
41 Comae Berenices is a single,[8] orange-huedstar in the northernconstellation ofComa Berenices. It is visible to the naked eye, having anapparent visual magnitude of 4.80.[2] Based upon an annualparallax shift of8.6 mas, it is located around 379 light years away. It is moving closer to the Earth with a heliocentricradial velocity of −16 km/s.[1]
At the age of about 4.5 billion years, this is anevolvedgiant star with astellar classification of K5-III,[3] currently on thered giant branch.[9] It has 1.2 times themass of the Sun and, after consuming the hydrogen at its core, has expanded to 34 times theSun's radius. The star is radiating 323 times theSun's luminosity from its enlargedphotosphere at aneffective temperature of 4,211 K.[2]
In 2017, one planet (HD 113996 b) was found orbiting it via theradial velocity method. The planet has a mass of at least6.3±1.0 MJ, asemi-major axis of1.6±0.1 AU, anorbital period of610.2±3.8 d, and aneccentricity of0.28±0.12.[9][10]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥6.3±1.0 MJ | 1.6±0.1 | 610.2±3.8 | 0.28±0.12 | — | — |
