Qatar-4
Qatar-4 is a faint K-dwarf star that hosts a planet in the constellation Andromeda. With an apparent magnitude of 13.60, it is impossible to detect with the naked eye, but can be detected with a powerful telescope. Qatar-4 is currently located 1,083 light years away based on parallax.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 19m 26.22s |
| Declination | +44° 01′ 39.48″ |
| Apparent magnitude (V) | 13.60 |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Spectral type | K1V |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: 0.985±0.031 mas/yr Dec.: −8.866±0.017 mas/yr |
| Parallax (π) | 3.0105 ± 0.0263 mas |
| Distance | 1,083 ± 9 ly (332 ± 3 pc) |
| Details | |
| Mass | 0.856+0.029 −0.030 M☉ |
| Radius | 0.800+0.015 −0.014 R☉ |
| Luminosity | 0.481 L☉ |
| Surface gravity (log g) | 4.565+0.018 −0.020 cgs |
| Temperature | 5174+33 −35 K |
| Metallicity [Fe/H] | 0.095+0.076 −0.088 dex |
| Rotational velocity (v sin i) | 7.1±0.5 km/s |
| Age | 170±0.1 Myr |
| Other designations | |
Gaia DR2 385697172809355392, Qatar 4, UCAC3 269-3518 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
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