Ross 508
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens[1]
Right ascension 15h 23m 51.13709s[2]
Declination +17° 27′ 57.4439″[2]
Apparent magnitude (V) 14.18±0.20[3]
Characteristics
Evolutionary stage Main sequence
Spectral type M4.5[4]
Apparent magnitude (V) 14.18±0.20[3]
Apparent magnitude (G) 12.195±0.003[2]
Apparent magnitude (J) 9.105±0.024[4]
Apparent magnitude (H) 8.620±0.032[3]
Apparent magnitude (K) 8.279±0.023[4]
Astrometry
Radial velocity (Rv)42.14±0.39[2] km/s
Proper motion (μ) RA: −391.919±0.034 mas/yr[2]
Dec.: −1259.296±0.034 mas/yr[2]
Parallax (π)89.1284 ± 0.0331 mas[2]
Distance36.59 ± 0.01 ly
(11.220 ± 0.004 pc)
Details[4]
Mass0.1774±0.0045 M☉
Radius0.2113±0.0063 R☉
Luminosity (bolometric)0.003589+0.000067
−0.000071 L☉
Surface gravity (log g)5.039±0.027 cgs
Temperature3071+34
−22 K
Metallicity [Fe/H]−0.20±0.20 dex
Other designations
GJ 585, Ci 20 930, G 137-2, G 136-103, LFT 1203, LHS 396, LSPM J1523+1727, LTT 14584, NLTT 40124, PLX 3481, PM 15216+1739, PM J15238+1727, Ross 508, TIC 400019820, 2MASS J15235112+1727569[5]
Database references
SIMBADdata

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.[6] In 2022 it was discovered to have a super-Earth, Ross 508 b, orbiting every 10.77 days, detected by doppler spectroscopy.[4]

The Ross 508 planetary system[4]
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		 — —

References

  1. ↑ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
  2. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 "Ross 508". NASA Exoplanet Archive.
  4. 1 2 3 4 5 6 Harakawa, Hiroki; et al. (2022). "A super-Earth orbiting near the inner edge of the habitable zone around the M4.5 dwarf Ross 508". Publications of the Astronomical Society of Japan. 74 (4): 904–922. arXiv:2205.11986. Bibcode:2022PASJ...74..904H. doi:10.1093/pasj/psac044.
  5. ↑ "Ross 508". SIMBAD. Centre de données astronomiques de Strasbourg.
  6. ↑ Ross, Frank E. (November 1, 1925). "New proper-motion stars, (first list)". The Astronomical Journal. 36: 96–99. Bibcode:1925AJ.....36...96R. doi:10.1086/104687.
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