| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 13h36m 59.08233s[1] |
| Declination | +24° 36′ 47.8687″[1] |
| Apparent magnitude (V) | 5.8[2] |
| Characteristics | |
| Evolutionary stage | red giant |
| Spectral type | M2III[3] |
| U−B color index | +1.85[4] |
| B−V color index | +1.58[4] |
| Variable type | suspected[5] |
| Astrometry | |
| Radial velocity (Rv) | −35.69±0.18[2] km/s |
| Proper motion (μ) | RA: −26.654[1] mas/yr Dec.: −2.803[1] mas/yr |
| Parallax (π) | 5.9122 ± 0.0860 mas[1] |
| Distance | 552 ± 8 ly (169 ± 2 pc) |
| Absolute magnitude (MV) | −0.431[6] |
| Details | |
| Mass | 1.1[7] M☉ |
| Radius | 49[8] R☉ |
| Luminosity | 324[9] L☉ |
| Surface gravity (log g) | 1.04[7] cgs |
| Temperature | 3,594[7] K |
| Metallicity [Fe/H] | +0.44[7] dex |
| Other designations | |
BD+25 2652, FK5 3085, HD 118508, HIP 66417, HR 5123, SAO 82905, NSV 6342 | |
| Database references | |
| SIMBAD | data |
HD 118508 is a suspected variable star in the northern constellationofBoötes. Its apparent magnitude may vary with an amplitude of 0.04, discovered during a search for small-amplitude red variables.[5] It is a red giant about 552 light years away.
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