Gliese 3293
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Eridanus[1] |
| Right ascension | 04h 28m 35.71917s[2] |
| Declination | −25° 10′ 09.2978″[2] |
| Apparent magnitude (V) | 11.96[3] |
| Characteristics | |
| Spectral type | M2.5[3] |
| Astrometry | |
| Radial velocity (Rv) | 13.116 ± 0.0024[4] km/s |
| Proper motion (μ) | RA: −81.426[2] mas/yr Dec.: −485.473[2] mas/yr |
| Parallax (π) | 49.4999 ± 0.0525[2] mas |
| Distance | 65.89 ± 0.07 ly (20.20 ± 0.02 pc) |
| Absolute magnitude (MV) | 10.66[1] |
| Details | |
| Mass | 0.420[1] M☉ |
| Radius | 0.40 ± 0.03[1] R☉ |
| Luminosity | 0.022[1] L☉ |
| Temperature | 3466 ± 49[1] K |
| Metallicity [Fe/H] | 0.02 ± 0.09[1] dex |
| Rotational velocity (v sin i) | −25.9 ± 6.6[1] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
Gliese 3293 is a star in the constellation of Eridanus, that is orbited by four planets, two of which (Gliese 3293b/Gliese 3293d) are located within the star's habitable zone. It is located at the celestial coordinates: Right Ascension 04h 28m 35.7s, Declination −25° 10′ 09″.[1] With an apparent visual magnitude of 11.96,[5] this star is too faint to be seen with the naked eye. It can be viewed with a telescope having an aperture of at least 4 in (10 cm). The estimated distance to Gliese 3293 is 65.9 light-years (20.2 parsecs), based on its stellar parallax.[2] Gliese 3293 is significantly smaller and cooler than the Sun.[1]
Planetary system[]
On November 15, 2017, it was discovered that Gliese 3293 possessed four planets, two of which were located well within the habitable zone: Gliese 3293b and Gliese 3293d.[6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| 3.28±064 M
|