Key parameters at a glance

A radius of 16.37 Earth radii
A mass of 266.98 Earth masses
Surface gravity around 1.00 g
An orbital period of 4.629 days
Semi-major axis 0.0586 AU
Distance from Earth 6,541.91 light-years
Earth Similarity Index 0.246
Travel time at Voyager 1 speed 115,366,516 years

CoRoT-31 b Planet Profile

Physical Specs

Radius

16.37 R⊕

Radius (Jupiter)

1.460 R♃

Mass

266.98 M⊕

Mass (Jupiter)

0.840 M♃

Density

0.33 g/cm³

Surface Gravity

1.00 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.246

HZ Position Unknown

Controversial No

Discovery

Year 2020

Method Transit

Facility CoRoT

Telescope 0.27 m CoRoT Telescope

Size rank in cohort

Rank by radius

#139of 1771

top 7.8%

This planet

16.37R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WASP-88 b 16.37 R⊕ HD 206893 c 16.37 R⊕ WASP-92 b 16.38 R⊕

Metric	Earth	CoRoT-31 b	Jupiter
Radius (R⊕)	1.00	16.37	11.21
Mass (M⊕)	1.00	266.98	317.83
Density (g/cm³)	5.51	0.33	1.33
Surface Gravity (g)	1.00	1.00	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	266.977 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 250595183

Gaia DR2

Gaia DR2 3020494716521521152

Gaia DR3

Gaia DR3 3020494716521521152

System

CoRoT-31

Percentile among Gas Giant cohort

Radius 16.365 R⊕ · percentile 92 / cohort 1771

Mass 266.977 M⊕ · percentile 29 / cohort 1747

Orbital period 4.63 d · percentile 34 / cohort 1533

Distance 2,005.76 pc · percentile 90 / cohort 1759

ESI 0.246 · percentile 43 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

4.629 days

Semi-major axis

0.0586 AU

Eccentricity

0.020

Inclination

83.20 °

Year Length

A year here lasts approximately 4.63 Earth days (1.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0586 AU.

Transit Fingerprint

Impact parameter b

0.870

Rp / R★

0.069900

Transit midpoint (BJD)

2,455,843.9445

Extended Orbital Architecture

Planet / star radius ratio

0.069900

Semi-major axis / stellar radius

7.200

Impact parameter (b)

0.870

RV semi-amplitude (K)

88.000 m/s

Transit mid-time (BJD)

2,455,843.9445

Long. of periastron (ω)

303.60°

Angular separation (arcsec)

0.02920

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.246

0 = alien, 1 = Earth-identical

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

Bord Eacute et al. 2020

Instrument

CoRoT CCD Array

Publication

2020-03

Observation locale

Space

Host System: CoRoT-31

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,700 K — cooler than the Sun (5,778 K)

Estimated Age

4.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

2.150 R☉

Stellar Mass

1.250 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

3.850 dex

Stellar density

0.152 g/cm³

Systemic radial velocity

18.60 km/s

Rotational v·sin i

2.80 km/s

Metallicity ratio

[Fe/H]

Distance

2,005.76 parsec

Light-years 6,541.91 ly

V-band magnitude

15.48 mag

Voyager-speed travel 115,366,516 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

0.470 mas

Total Proper Motion

7.748 mas/yr

PM Right Ascension

2.98 mas/yr

PM Declination

-7.15 mas/yr

Galactic Cartesian (pc)

x = -0.084 · y = 0.993 · z = -0.077

Equatorial (J2000)

RA 94.82074° · Dec -4.42230°

Galactic ℓ, b

213.225° · -9.163°

Ecliptic λ, β

95.430° · -27.771°

HTM-20 index

1038957023