Key parameters at a glance

A radius of 1.68 Earth radii
A mass of 4.08 Earth masses
Surface gravity around 1.44 g
An orbital period of 0.854 days
Semi-major axis 0.0170 AU
Equilibrium temperature 1,756 K (1483 °C)
Distance from Earth 521.54 light-years
Earth Similarity Index 0.145
Travel time at Voyager 1 speed 9,197,411 years

2 siblings around CoRoT-7

CoRoT-7 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
CoRoT-7 b this	Super-Earth	1.68	4.08	0.854	1,756	2009
CoRoT-7 c	Sub-Neptune	2.83	8.40	3.698	—	2009
CoRoT-7 d	Neptune-like	4.31	17.14	8.966	—	2022

CoRoT-7 b Planet Profile

Physical Specs

Radius

1.68 R⊕

Radius (Jupiter)

0.150 R♃

Mass

4.08 M⊕

Mass (Jupiter)

0.013 M♃

Density

9.36 g/cm³

Surface Gravity

1.44 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.145

HZ Position Unknown

Controversial No

Discovery

Year 2009

Method Transit

Facility CoRoT

Telescope 0.27 m CoRoT Telescope

Size rank in cohort

Rank by radius

#432of 1176

top 36.6%

This planet

1.68R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-501 c 1.68 R⊕ Kepler-1969 b 1.68 R⊕ Kepler-1266 c 1.68 R⊕

Metric	Earth	CoRoT-7 b	Jupiter
Radius (R⊕)	1.00	1.68	11.21
Mass (M⊕)	1.00	4.08	317.83
Density (g/cm³)	5.51	9.36	1.33
Surface Gravity (g)	1.00	1.44	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4.077 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 280304863

Gaia DR2

Gaia DR2 3107267177757848576

Gaia DR3

Gaia DR3 3107267177757848576

System

CoRoT-7

Percentile among Super-Earth cohort

Radius 1.681 R⊕ · percentile 63 / cohort 1176

Mass 4.077 M⊕ · percentile 76 / cohort 1176

Orbital period 0.85 d · percentile 4 / cohort 1164

Distance 159.91 pc · percentile 21 / cohort 1171

ESI 0.145 · percentile 4 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

0.854 days

Semi-major axis

0.0170 AU

Eccentricity

0.000

Inclination

80.10 °

Year Length

A year here lasts roughly 20.5 hours long on a nearly circular orbit at a mean orbital distance of 0.0170 AU.

Transit Fingerprint

Depth

0.035 %

Duration

1.059 h

Impact parameter b

0.713

Rp / R★

0.018700

Transit midpoint (BJD)

2,454,398.0776

Photometric dip

Transit produces a flux drop of 350 ppm lasting ≈ 1.06 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018700

Semi-major axis / stellar radius

4.260

Impact parameter (b)

0.713

RV semi-amplitude (K)

3.100 m/s

Transit mid-time (BJD)

2,454,398.0776

Long. of periastron (ω)

160.00°

Angular separation (arcsec)

0.10600

Eq. Temperature

1,756K

(1483 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.145

0 = alien, 1 = Earth-identical

Insufficient insolation data — 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

Leger et al. 2009

Instrument

CoRoT CCD Array

Publication

2009-10

Observation locale

Space

Discovery cohort

Planets confirmed in 2009 at CoRoT (4 shown).

CoRoT-7 c · Sub-Neptune CoRoT-9 b · Gas Giant CoRoT-6 b · Gas Giant CoRoT-5 b · Gas Giant

Host System: CoRoT-7

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,275 K — cooler than the Sun (5,778 K)

Estimated Age

1.80 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.830 R☉

Stellar Mass

0.820 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

2.000 g/cm³

Systemic radial velocity

31.17 km/s

Rotational v·sin i

3.50 km/s

Metallicity ratio

[Fe/H]

Distance

159.91 parsec

Light-years 521.54 ly

V-band magnitude

11.73 mag

Voyager-speed travel 9,197,411 yr

Multi-band Host Photometry — 13 bands

Astrometric Data

Parallax

6.225 mas

Total Proper Motion

10.961 mas/yr

PM Right Ascension

10.96 mas/yr

PM Declination

-0.11 mas/yr

Galactic Cartesian (pc)

x = -0.190 · y = 0.982 · z = -0.019

Equatorial (J2000)

RA 100.95617° · Dec -1.06301°

Galactic ℓ, b

213.010° · -2.179°

Ecliptic λ, β

102.006° · -24.047°

HTM-20 index

155434600