Key parameters at a glance

A radius of 9.92 Earth radii
A mass of 415.70 Earth masses
Surface gravity around 4.22 g
An orbital period of 4.035 days
Semi-major axis 0.0510 AU
Equilibrium temperature 1,700 K (1427 °C)
Distance from Earth 3,747.30 light-years
Earth Similarity Index 0.096
Travel time at Voyager 1 speed 66,083,705 years

CoRoT-13 b Planet Profile

Physical Specs

Radius

9.92 R⊕

Radius (Jupiter)

0.885 R♃

Mass

415.70 M⊕

Mass (Jupiter)

1.308 M♃

Density

2.34 g/cm³

Surface Gravity

4.22 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.096

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

#7of 574

top 1.0%

This planet

9.92R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

TOI-1135 b 9.92 R⊕ K2-308 b 9.92 R⊕ HATS-75 b 9.91 R⊕

Metric	Earth	CoRoT-13 b	Jupiter
Radius (R⊕)	1.00	9.92	11.21
Mass (M⊕)	1.00	415.70	317.83
Density (g/cm³)	5.51	2.34	1.33
Surface Gravity (g)	1.00	4.22	2.53
Insolation (S⊕)	1.00	546.53	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	415.704 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 281909674

Gaia DR2

Gaia DR2 3101974231859723776

Gaia DR3

Gaia DR3 3101974231859723776

System

CoRoT-13

Percentile among Neptune-like cohort

Radius 9.920 R⊕ · percentile 99 / cohort 574

Mass 415.704 M⊕ · percentile 97 / cohort 574

Orbital period 4.04 d · percentile 13 / cohort 524

Distance 1,148.93 pc · percentile 77 / cohort 572

ESI 0.096 · percentile 3 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

4.035 days

Semi-major axis

0.0510 AU

Eccentricity

0.000

Inclination

88.02 °

Year Length

A year here lasts approximately 4.04 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0510 AU.

Transit Fingerprint

Depth

1.185 %

Duration

3.140 h

Impact parameter b

0.374

Rp / R★

0.090900

Transit midpoint (BJD)

2,454,790.8091

Photometric dip

Transit produces a flux drop of 11,851 ppm lasting ≈ 3.14 h.

Extended Orbital Architecture

Planet / star radius ratio

0.090900

Semi-major axis / stellar radius

10.810

Impact parameter (b)

0.374

RV semi-amplitude (K)

157.800 m/s

Transit mid-time (BJD)

2,454,790.8091

Angular separation (arcsec)

0.04440

Eq. Temperature

1,700K

(1427 °C)

Insolation (S⊕)

546.53

Earth = 1.00

Earth Similarity (ESI)

0.096

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

Cabrera et al. 2010

Instrument

CoRoT CCD Array

Publication

2010-11

Observation locale

Space

Discovery cohort

Planets confirmed in 2010 at CoRoT (5 shown).

CoRoT-10 b · Gas Giant CoRoT-8 b · Neptune-like CoRoT-12 b · Gas Giant CoRoT-14 b · Gas Giant CoRoT-11 b · Gas Giant

Host System: CoRoT-13

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,945 K — hotter than the Sun (5,778 K)

Estimated Age

1.64 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.010 R☉

Stellar Mass

1.090 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

1.468 g/cm³

Systemic radial velocity

22.45 km/s

Rotational v·sin i

4.00 km/s

Metallicity ratio

[Fe/H]

Distance

1,148.93 parsec

Light-years 3,747.30 ly

V-band magnitude

15.01 mag

Voyager-speed travel 66,083,705 yr

Multi-band Host Photometry — 13 bands

Astrometric Data

Parallax

0.844 mas

Total Proper Motion

3.645 mas/yr

PM Right Ascension

1.64 mas/yr

PM Declination

-3.26 mas/yr

Galactic Cartesian (pc)

x = -0.219 · y = 0.972 · z = -0.089

Equatorial (J2000)

RA 102.72114° · Dec -5.08646°

Galactic ℓ, b

217.399° · -2.440°

Ecliptic λ, β

104.365° · -27.893°

HTM-20 index

204655970