GJ 9827
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pisces |
| Right ascension | 23h 27m 04.83769s |
| Declination | −01° 17′ 10.5827″ |
| Apparent magnitude (V) | 10.25 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | K6 V |
| B−V color index | +1.30 |
| Astrometry | |
| Radial velocity (Rv) | 32.01±0.27 km/s |
| Proper motion (μ) | RA: 375.977 mas/yr Dec.: 215.870 mas/yr |
| Parallax (π) | 33.7247±0.0169 mas |
| Distance | 96.71 ± 0.05 ly (29.65 ± 0.01 pc) |
| Absolute magnitude (MV) | +7.97 |
| Details | |
| Mass | 0.606+0.015 −0.014 M☉ |
| Radius | 0.602+0.005 −0.004 R☉ |
| Luminosity | 0.119+0.035 −0.029 L☉ |
| Surface gravity (log g) | 4.682±0.021 cgs |
| Temperature | 4,236±12 K |
| Metallicity [Fe/H] | −0.29±0.03 dex |
| Rotation | 28.16+3.38 −2.66 d |
| Rotational velocity (v sin i) | <1.75 km/s |
| Age | 10+3 −5 Gyr |
| Other designations | |
| BD−02°5958, GJ 9827, HIP 115752, LTT 9542, 2MASS J23270480-0117108, K2-135 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
GJ 9827 is a star in the constellation of Pisces. It is a K-type main-sequence star with an apparent magnitude of 10.25. It is 97 light-years (30 parsecs) away, based on parallax.
The rotation period of the star could not be determined as of 2020, and could be either around 15 or 30 days, depending on the interpretation of available data.