Astronomy:CoRoT-8
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Aquila |
| Right ascension | {{{ra}}} |
| Declination | {{{dec}}} |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: 13.5768 ± 0.0475751[citation needed] mas/yr Dec.: -32.7832 ± 0.0418883[citation needed] mas/yr |
| Parallax (π) | 3.07662 ± 0.0259729[citation needed] mas |
| Details | |
| Mass | 0.88 M☉ |
| Radius | 0.77 R☉ |
| Metallicity [Fe/H] | -0.22 ± 0.11 Fe[citation needed] dex |
CoRoT-8 is a star in the constellation Aquila at a distance of about 1239 light-years from us. At least one planet revolves around the star.
CoRoT-8 is an orange dwarf which has 0.88 solar masses and 0.77 solar radius.[1] By astronomical standards, this is already a rather young star compared to the Sun: its age is about 3 billion years. It got its name in honor of the CoRoT space telescope, with the help of which its planetary companion was discovered.
In 2010, a group of astronomers working within the CoRoT program announced the discovery of the planet CoRoT-8b in this system. It is a hot gas giant, similar in mass and size to Saturn. The planet orbits at a distance of about 0.06 AU. e. from the parent star, while making a complete revolution in 6.21 days.[2][3][4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.218 ± 0.034 MJ | 0.0636 ± 0.0014 | 6.212445 ± 0.000007 | 0.19 | — | — |
References
- ↑ P. Bordé, F. Bouchy, M. Deleuil, J. Cabrera, L. Jorda, C. Lovis, S. Csizmadia, S. Aigrain, J. M. Almenara, R. Alonso, M. Auvergne, A. Baglin, P. Barge, W. Benz, A. S. Bonomo, H. Bruntt, L. Carone, S. Carpano, H. Deeg, R. Dvorak, A. Erikson, S. Ferraz-Mello, M. Fridlund, D. Gandolfi, J.-C. Gazzano, M. Gillon, E. Guenther, T. Guillot, P. Guterman, A. Hatzes, M. Havel, G. Hébrard, H. Lammer, A. Léger, M. Mayor, T. Mazeh, C. Moutou, M. Pätzold, F. Pepe, M. Ollivier, D. Queloz, H. Rauer, D. Rouan, B. Samuel, A. Santerne, J.Schneider, B. Tingley, S. Udry, J. Weingrill, G. Wuchterl (2010-08-02). "Transiting exoplanets from the CoRoT space mission" (in en). Astronomy and Astrophysics 520: A66. doi:10.1051/0004-6361/201014775. Bibcode: 2010A&A...520A..66B.
- ↑ Bordé, P. et al. (September 2010). "Transiting exoplanets from the CoRoT space mission. XI. CoRoT-8b: a hot and dense sub-Saturn around a K1 dwarf". Astronomy and Astrophysics 520: A66. doi:10.1051/0004-6361/201014775. ISSN 0004-6361. Bibcode: 2010A&A...520A..66B.
- ↑ Raetz, St; Heras, A. M.; Fernández, M.; Casanova, V.; Marka, C. (February 2019). "Transit analysis of the CoRoT-5, CoRoT-8, CoRoT-12, CoRoT-18, CoRoT-20, and CoRoT-27 systems with combined ground- and space-based photometry". Monthly Notices of the Royal Astronomical Society 483 (1): 824–839. doi:10.1093/mnras/sty3085. ISSN 0035-8711. Bibcode: 2019MNRAS.483..824R.
- ↑ Bonomo, A. S. et al. (June 2017). "The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics 602: A107. doi:10.1051/0004-6361/201629882. ISSN 0004-6361. Bibcode: 2017A&A...602A.107B.
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