Gliese 623

Gliese 623

Gliese 623, imaged by the Hubble Space Telescope. The fainter companion is to the right.
Observation data
Epoch J2000      Equinox J2000
Constellation Hercules
Right ascension 16h 24m 09.314s[1]
Declination +48° 21′ 11.11″[1]
Characteristics
Spectral type M3.0V[2]
Astrometry
Radial velocity (Rv)−28.06±0.59[1] km/s
Proper motion (μ) RA: 1,151.232 mas/yr[1]
Dec.: −499.079 mas/yr[1]
Parallax (π)127.4785±0.4818 mas[1]
Distance25.59 ± 0.10 ly
(7.84 ± 0.03 pc)
Orbit[3]
Period (P)1365.6±0.3 d
Semi-major axis (a)1.894±0.019 AU
Eccentricity (e)0.631±0.002
Inclination (i)154.0±0.1°
Longitude of the node (Ω)98.5±0.47°
Periastron epoch (T)1313.3±0.6 reduced JD
Argument of periastron (ω)
(secondary)		248.68±0.46°
Details[3]
Primary (A)
Mass0.371±0.015 M☉
Secondary (B)
Mass0.115±0.0023 M☉
Other designations
GJ 623, HIP 80346, G 202-45, LHS 417[2]
Database references
SIMBADdata
Gliese 623 is located in the constellation Hercules.
Gliese 623 is located in the constellation Hercules.
Gliese 623
Location of Gliese 623 in the constellation Hercules

Gliese 623 is a dim binary star 25.6 light-years from Earth in the constellation Hercules. It was photographed by the NASA/ESA Hubble Space Telescope's Faint Object Camera in 1994.[4] The binary system consists of two red dwarfs orbiting each other at a distance of 1.9 astronomical units.[3]

See also

References

  1. 1 2 3 4 5 6 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. 1 2 "G 202-45". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 18 March 2025.
  3. 1 2 3 Martinache, Frantz; Lloyd, James P.; Ireland, Michael J.; Yamada, Ryan S.; Tuthill, Peter G. (2007). "Precision Masses of the Low-Mass Binary System GJ 623". The Astrophysical Journal. 661 (1): 496–501. arXiv:astro-ph/0612138. Bibcode:2007ApJ...661..496M. doi:10.1086/513868. S2CID 14648386.
  4. ↑ Barbieri, C.; De Marchi, G.; Nota, A.; Corrain, G.; Hack, W.; Ragazzoni, R.; MacChetto, D. (November 1996). "First HST/FOC images of the low mass companion of the astrometric binary Gliese 623". Astronomy and Astrophysics. 315 (1): 418–420. Bibcode:1996A&A...315..418B.


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