Key parameters at a glance

A radius of 16.14 Earth radii
A mass of 291.44 Earth masses
Surface gravity around 1.12 g
An orbital period of 2.828 days
Semi-major axis 0.0402 AU
Equilibrium temperature 1,442 K (1169 °C)
Distance from Earth 3,673.72 light-years
Earth Similarity Index 0.079
Travel time at Voyager 1 speed 64,786,107 years

CoRoT-12 b Planet Profile

Physical Specs

Radius

16.14 R⊕

Radius (Jupiter)

1.440 R♃

Mass

291.44 M⊕

Mass (Jupiter)

0.917 M♃

Density

0.41 g/cm³

Surface Gravity

1.12 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.079

HZ Position Inner

Controversial No

Discovery

Year 2010

Method Transit

Facility CoRoT

Telescope 0.27 m CoRoT Telescope

Size rank in cohort

Rank by radius

#152of 1771

top 8.5%

This planet

16.14R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-1789 b 16.14 R⊕ TOI-2046 b 16.14 R⊕ WASP-118 b 16.14 R⊕

Metric	Earth	CoRoT-12 b	Jupiter
Radius (R⊕)	1.00	16.14	11.21
Mass (M⊕)	1.00	291.44	317.83
Density (g/cm³)	5.51	0.41	1.33
Surface Gravity (g)	1.00	1.12	2.53
Insolation (S⊕)	1.00	661.13	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	291.438 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 280210963

Gaia DR2

Gaia DR2 3107255598526406912

Gaia DR3

Gaia DR3 3107255598526406912

System

CoRoT-12

Percentile among Gas Giant cohort

Radius 16.140 R⊕ · percentile 91 / cohort 1771

Mass 291.438 M⊕ · percentile 32 / cohort 1747

Orbital period 2.83 d · percentile 14 / cohort 1533

Distance 1,126.37 pc · percentile 88 / cohort 1759

ESI 0.079 · percentile 18 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

2.828 days

Semi-major axis

0.0402 AU

Eccentricity

0.070

Inclination

85.48 °

Year Length

A year here lasts approximately 2.83 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0402 AU.

Transit Fingerprint

Depth

1.744 %

Duration

2.574 h

Impact parameter b

0.573

Rp / R★

0.131400

Transit midpoint (BJD)

2,454,398.6271

Photometric dip

Transit produces a flux drop of 17,440 ppm lasting ≈ 2.57 h.

Extended Orbital Architecture

Planet / star radius ratio

0.131400

Semi-major axis / stellar radius

8.097

Impact parameter (b)

0.573

RV semi-amplitude (K)

125.500 m/s

Transit mid-time (BJD)

2,454,398.6271

Long. of periastron (ω)

105.00°

Angular separation (arcsec)

0.03570

Eq. Temperature

1,442K

(1169 °C)

Insolation (S⊕)

661.13

Earth = 1.00

Earth Similarity (ESI)

0.079

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Gillon et al. 2010

Instrument

CoRoT CCD Array

Publication

2010-09

Observation locale

Space

Discovery cohort

Planets confirmed in 2010 at CoRoT (5 shown).

CoRoT-10 b · Gas Giant CoRoT-8 b · Neptune-like CoRoT-13 b · Neptune-like CoRoT-14 b · Gas Giant CoRoT-11 b · Gas Giant

Host System: CoRoT-12

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,675 K — cooler than the Sun (5,778 K)

Estimated Age

6.30 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.116 R☉

Stellar Mass

1.078 M☉

Metallicity [Fe/H]

0.16

Extended Stellar Properties

Surface gravity (log g)

4.375 dex

Stellar density

1.080 g/cm³

Rotational v·sin i

1.00 km/s

Metallicity ratio

[Fe/H]

Distance

1,126.37 parsec

Light-years 3,673.72 ly

V-band magnitude

15.59 mag

Voyager-speed travel 64,786,107 yr

Multi-band Host Photometry — 13 bands

Astrometric Data

Parallax

0.861 mas

Total Proper Motion

3.866 mas/yr

PM Right Ascension

1.69 mas/yr

PM Declination

-3.47 mas/yr

Galactic Cartesian (pc)

x = -0.187 · y = 0.982 · z = -0.023

Equatorial (J2000)

RA 100.76569° · Dec -1.29644°

Galactic ℓ, b

213.132° · -2.454°

Ecliptic λ, β

101.819° · -24.295°

HTM-20 index

181807194