Gliese 623 is a dim double 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. The binary system consists of two red dwarfs orbiting each other at a distance of 1.9 astronomical units.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 16h 24m 09.325s[1] |
| Declination | +48° 21′ 10.46″[1] |
| Characteristics | |
| Spectral type | M3.0V / M D ~ |
| Astrometry | |
| Proper motion (μ) | RA: 1146.26±1.21[1] mas/yr Dec.: −451.86±1.11[1] mas/yr |
| Parallax (π) | 127.4785 ± 0.4818 mas[2] |
| Distance | 25.59 ± 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) | |
| Mass | 0.371±0.015 M☉ |
| Secondary (B) | |
| Mass | 0.115±0.0023 M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
  Gliese 623 Location of Gliese 623 in the constellation Hercules | |
See also
editReferences
edit- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Archived from the original on 2019-03-28. Retrieved 2017-12-27. Vizier catalog entry Archived 2020-09-26 at the Wayback Machine
- ^ 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.
- ^ a b c 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.
Further reading
edit- 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.
External links
edit- Nasa page Archived 2010-06-09 at the Wayback Machine
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