CoRoT-8

CoRoT-8 is a star in the constellation Aquila at a distance of about 1055 light-years away. At least one planet revolves around the star.

CoRoT-8

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Aquila[1]
Right ascension	19h 26m 21.2426s[2]
Declination	+01° 25′ 35.178″[2]
Characteristics
Evolutionary stage	main sequence star[3]
Spectral type	K1V[3]
Variable type	planetary transit
Astrometry
Proper motion (μ)	RA: 13.683(28) mas/yr[2] Dec.: −32.743(22) mas/yr[2]
Parallax (π)	3.0903±0.0207 mas[2]
Distance	1,055 ± 7 ly (324 ± 2 pc)
Details
Mass	0.89±0.04[4] M☉
Radius	0.802±0.014[4] R☉
Luminosity	0.41[2] L☉
Surface gravity (log g)	4.58±0.01[4] cgs
Temperature	5143±178[5] K
Metallicity [Fe/H]	0.22±0.11[5] dex
Rotational velocity (v sin i)	2±1[3] km/s
Age	1.7+2.3 −1.4[4] Gyr
Database references
SIMBAD	data
Exoplanet Archive	data

CoRoT-8 is an orange dwarf which has 0.88 solar masses and 0.77 solar radius.^[6] 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 from the parent star, while making a complete revolution in 6.21 days.^[3][4][7]

The CoRoT-8 planetary system^[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[7]	88.18±0.08°	0.619+0.016 −0.017 RJ