Gliese 754
Gliese 754 is a red dwarf star of spectral type M4.5V in the constellation Telescopium.[1] It has an apparent magnitude of 12.23 and is around 19.3 light-years distant.[1] It is one of the hundred closest stars to the Solar System. Calculations of its orbit around the Milky Way showed that it was eccentric, and indicate that it might be a thick disk object.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Telescopium |
| Right ascension | 19h 20m 47.955s [1] |
| Declination | −45° 33′ 28.33″ [1] |
| Characteristics | |
| Spectral type | M4.5V[1] |
| Database references | |
| SIMBAD | data |
Planetary System
In June 2019 one planet candidate were reported in orbit around Gliese 754. [3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 9.8+4.6 −5.2 M⊕ |
0.277+0.025 −0.028 |
78.37+0.55 −0.47 |
0.03+0.20 −0.03 |
— | — |
References
- "LHS 60 -- High proper-motion Star". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 4 July 2014.
- Innanen, K.A.; Flynn, C. (2010). "The Radial Velocity, Space Motion, and Galactic Orbit of GJ 754". Journal of the Royal Astronomical Society of Canada. 104 (6): 223–24. Bibcode:2010JRASC.104..223I.
- Barnes, J. R.; et al. (2019-06-11). "Frequency of planets orbiting M dwarfs in the Solar neighbourhood". arXiv:1906.04644.
- Jao, Wei-Chun; Henry, Todd J.; Subasavage, John P.; Brown, Misty A.; Ianna, Philip A.; Bartlett, Jennifer L.; Costa, Edgardo; Méndez, René A. (2005). "The Solar Neighborhood. XIII. Parallax Results from the CTIOPI 0.9 Meter Program: Stars with mu >= 1.0" yr-1 (MOTION Sample)". The Astronomical Journal. 129 (4): 1954–1967. arXiv:astro-ph/0502167. Bibcode:2005AJ....129.1954J. doi:10.1086/428489.
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