Key parameters at a glance

A radius of 13.34 Earth radii
A mass of 228.83 Earth masses
Surface gravity around 1.29 g
An orbital period of 9.202 days
Semi-major axis 0.0900 AU
Equilibrium temperature 1,074 K (801 °C)
Distance from Earth 2,369.24 light-years
Earth Similarity Index 0.121
Travel time at Voyager 1 speed 41,781,480 years

CoRoT-4 b Planet Profile

Physical Specs

Radius

13.34 R⊕

Radius (Jupiter)

1.190 R♃

Mass

228.83 M⊕

Mass (Jupiter)

0.720 M♃

Density

0.53 g/cm³

Surface Gravity

1.29 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.121

HZ Position Inner

Controversial No

Discovery

Year 2008

Method Transit

Facility CoRoT

Telescope 0.27 m CoRoT Telescope

Size rank in cohort

Rank by radius

#787of 1771

top 44.4%

This planet

13.34R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-468 b 13.34 R⊕ K2-29 b 13.34 R⊕ TOI-5181 A b 13.35 R⊕

Metric	Earth	CoRoT-4 b	Jupiter
Radius (R⊕)	1.00	13.34	11.21
Mass (M⊕)	1.00	228.83	317.83
Density (g/cm³)	5.51	0.53	1.33
Surface Gravity (g)	1.00	1.29	2.53
Insolation (S⊕)	1.00	203.95	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	228.830 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 36440357

Gaia DR2

Gaia DR2 3113201890547554432

Gaia DR3

Gaia DR3 3113201890547554432

System

CoRoT-4

Percentile among Gas Giant cohort

Radius 13.340 R⊕ · percentile 56 / cohort 1771

Mass 228.830 M⊕ · percentile 24 / cohort 1747

Orbital period 9.20 d · percentile 43 / cohort 1533

Distance 726.41 pc · percentile 82 / cohort 1759

ESI 0.121 · percentile 32 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

9.202 days

Semi-major axis

0.0900 AU

Eccentricity

0.000

Inclination

90.00 °

Year Length

A year here lasts approximately 9.20 Earth days (2.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0900 AU.

Transit Fingerprint

Depth

1.381 %

Duration

4.432 h

Rp / R★

0.104700

Transit midpoint (BJD)

2,454,141.3642

Photometric dip

Transit produces a flux drop of 13,812 ppm lasting ≈ 4.43 h.

Extended Orbital Architecture

Planet / star radius ratio

0.104700

Semi-major axis / stellar radius

17.360

RV semi-amplitude (K)

63.000 m/s

Transit mid-time (BJD)

2,454,141.3642

Angular separation (arcsec)

0.12400

Eq. Temperature

1,074K

(801 °C)

Insolation (S⊕)

203.95

Earth = 1.00

Earth Similarity (ESI)

0.121

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

Aigrain et al. 2008

Instrument

CoRoT CCD Array

Publication

2008-09

Observation locale

Space

Discovery cohort

Planets confirmed in 2008 at CoRoT (3 shown).

CoRoT-2 b · Gas Giant CoRoT-3 b · Gas Giant CoRoT-1 b · Gas Giant

Host System: CoRoT-4

Spectral Class

F-type yellow-white

Effective Temperature

6,190 K — hotter than the Sun (5,778 K)

Estimated Age

1.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.170 R☉

Stellar Mass

1.160 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.410 dex

Stellar density

1.110 g/cm³

Systemic radial velocity

32.30 km/s

Rotational v·sin i

6.40 km/s

Rotation period

8.90 days

Distance

726.41 parsec

Light-years 2,369.24 ly

V-band magnitude

13.65 mag

Voyager-speed travel 41,781,480 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.348 mas

Total Proper Motion

5.346 mas/yr

PM Right Ascension

-3.66 mas/yr

PM Declination

-3.90 mas/yr

Galactic Cartesian (pc)

x = -0.211 · y = 0.977 · z = -0.012

Equatorial (J2000)

RA 102.19462° · Dec -0.67279°

Galactic ℓ, b

213.228° · -0.898°

Ecliptic λ, β

103.317° · -23.550°

HTM-20 index

903940081