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CoRoT-8

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CoRoT-8
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aquila
Right ascension  19h 26m 21.26s
Declination +01° 25′ 34.67″
Characteristics
Evolutionary stage main sequence star
Spectral type K3V
Variable type planetary transit
Astrometry
Proper motion (μ) RA: 13.5768 ± 0.0475751 mas/yr
Dec.: -32.7832 ± 0.0418883 mas/yr
Parallax (π)3.07662 ± 0.0259729 mas
Details
Mass0.868 M
Radius0.563398 R
Luminosity-0.6988087 L
Temperature5143 K
Metallicity [Fe/H]-0.22 ± 0.11 Fe dex
Age1.7 Gyr

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.

Characteristics[edit]

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.

Planetary system[edit]

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]

The CoRoT-8 planetary system
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[edit]

  1. 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. XI. CoRoT-8b: a hot and dense sub-Saturn around a K1 dwarf". Arxiv.org. Archived from the original on 2017-03-05. Retrieved 2010-08-12. Unknown parameter |url-status= ignored (help)CS1 maint: Multiple names: authors list (link)
  2. 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. arXiv:1008.0325. Bibcode:2010A&A...520A..66B. doi:10.1051/0004-6361/201014775. ISSN 0004-6361. Unknown parameter |s2cid= ignored (help)
  3. 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. arXiv:1812.01536. Bibcode:2019MNRAS.483..824R. doi:10.1093/mnras/sty3085. ISSN 0035-8711.
  4. 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. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. ISSN 0004-6361. Unknown parameter |s2cid= ignored (help)


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