Mu Pegasi
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Pegasus |
| Right ascension | 22h 50m 00.19307s |
| Declination | +24° 36′ 05.6926″ |
| Apparent magnitude (V) | 3.514 |
| Characteristics | |
| Evolutionary stage | Yellow giant |
| Spectral type | G8 III |
| U−B color index | +0.674 |
| B−V color index | +0.932 |
| Astrometry | |
| Radial velocity (Rv) | +13.54 ± 0.20 km/s |
| Proper motion (μ) | RA: +145.240 mas/yr Dec.: −42.396 mas/yr |
| Parallax (π) | 28.934±0.189 mas |
| Distance | 112.7 ± 0.7 ly (34.6 ± 0.2 pc) |
| Absolute magnitude (MV) | +0.432 |
| Details | |
| Mass | 2.59±0.05 M☉ |
| Radius | 9.32±0.47 R☉ |
| Luminosity | 46.9±0.6 L☉ |
| Surface gravity (log g) | 2.85±0.03 cgs |
| Temperature | 4,961±40 K |
| Metallicity [Fe/H] | −0.03±0.02 dex |
| Rotational velocity (v sin i) | 0.95±0.45 km/s |
| Age | 520±30 Myr |
| Other designations | |
| Sadalbari, Mu Peg, μ Peg, 48 Peg, BD+23 4615, FK5 862, GJ 4298, HD 216131, HIP 112748, HR 8684, SAO 90816 | |
| Database references | |
| SIMBAD | data |
Mu Pegasi or μ Pegasi, formally named Sadalbari (/ˌsædəlˈbɛəri/), is a star in the northern constellation of Pegasus. The apparent visual magnitude of this star is 3.5, which is bright enough to be seen with the naked eye even on a moonlit night. Based upon parallax measurements taken by the Gaia spacecraft, it is approximately 113 light-years (35 parsecs) from the Sun.