Ross 508
Ross 508 is a 13th magnitude red dwarf star, 11.2183 parsecs away. The Ross catalog is named after Frank Elmore Ross who published a first list of 86 high proper motion stars in 1925. In 2022 it was discovered to have a super-Earth, Ross 508 b, orbiting every 10.77 days, detected by doppler spectroscopy.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥4.00+0.53 −0.55 M🜨 |
0.05366+0.00056 −0.00049 |
10.77±0.01 | 0.33+0.13 −0.15 |
— | — |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15h 23m 51.13709s |
| Declination | +17° 27′ 57.4439″ |
| Apparent magnitude (V) | 14.18±0.20 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | M4.5 |
| Apparent magnitude (V) | 14.18±0.20 |
| Apparent magnitude (G) | 12.195±0.003 |
| Apparent magnitude (J) | 9.105±0.024 |
| Apparent magnitude (H) | 8.620±0.032 |
| Apparent magnitude (K) | 8.279±0.023 |
| Astrometry | |
| Radial velocity (Rv) | 42.14±0.39 km/s |
| Proper motion (μ) | RA: −391.919±0.034 mas/yr Dec.: −1259.296±0.034 mas/yr |
| Parallax (π) | 89.1284 ± 0.0331 mas |
| Distance | 36.59 ± 0.01 ly (11.220 ± 0.004 pc) |
| Details | |
| Mass | 0.1774±0.0045 M☉ |
| Radius | 0.2113±0.0063 R☉ |
| Luminosity (bolometric) | 0.003589+0.000067 −0.000071 L☉ |
| Surface gravity (log g) | 5.039±0.027 cgs |
| Temperature | 3071+34 −22 K |
| Metallicity [Fe/H] | −0.20±0.20 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
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