Key parameters at a glance

A radius of 11.77 Earth radii
A mass of 889.90 Earth masses
Surface gravity around 6.42 g
An orbital period of 3.631 days
Semi-major axis 0.0480 AU
Equilibrium temperature 1,660 K (1387 °C)
Distance from Earth 3,460.42 light-years
Earth Similarity Index 0.097
Travel time at Voyager 1 speed 61,024,456 years

CoRoT-23 b Planet Profile

Physical Specs

Radius

11.77 R⊕

Radius (Jupiter)

1.050 R♃

Mass

889.90 M⊕

Mass (Jupiter)

2.800 M♃

Density

3.00 g/cm³

Surface Gravity

6.42 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.097

HZ Position Unknown

Controversial No

Discovery

Year 2011

Method Transit

Facility CoRoT

Telescope 0.27 m CoRoT Telescope

Size rank in cohort

Rank by radius

#1562of 1771

top 88.1%

This planet

11.77R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-75 b 11.77 R⊕ HAT-P-17 b 11.77 R⊕ WASP-57 b 11.77 R⊕

Metric	Earth	CoRoT-23 b	Jupiter
Radius (R⊕)	1.00	11.77	11.21
Mass (M⊕)	1.00	889.90	317.83
Density (g/cm³)	5.51	3.00	1.33
Surface Gravity (g)	1.00	6.42	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	889.900 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 108155949

Gaia DR2

Gaia DR2 4283597937777249408

Gaia DR3

Gaia DR3 4283597937777249408

System

CoRoT-23

Percentile among Gas Giant cohort

Radius 11.770 R⊕ · percentile 12 / cohort 1771

Mass 889.900 M⊕ · percentile 64 / cohort 1747

Orbital period 3.63 d · percentile 25 / cohort 1533

Distance 1,060.97 pc · percentile 87 / cohort 1759

ESI 0.097 · percentile 25 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.631 days

Semi-major axis

0.0480 AU

Eccentricity

0.160

Inclination

85.70 °

Year Length

A year here lasts approximately 3.63 Earth days (1.0% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0480 AU.

Transit Fingerprint

Duration

3.888 h

Impact parameter b

0.560

Rp / R★

0.067100

Transit midpoint (BJD)

2,455,308.9390

Extended Orbital Architecture

Planet / star radius ratio

0.067100

Semi-major axis / stellar radius

6.850

Impact parameter (b)

0.560

RV semi-amplitude (K)

377.000 m/s

Transit mid-time (BJD)

2,455,308.9390

Long. of periastron (ω)

52.00°

Angular separation (arcsec)

0.04520

Eq. Temperature

1,660K

(1387 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.097

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

Rouan et al. 2012

Instrument

CoRoT CCD Array

Publication

2012-01

Observation locale

Space

Discovery cohort

Planets confirmed in 2011 at CoRoT (5 shown).

CoRoT-16 b · Gas Giant CoRoT-20 b · Neptune-like CoRoT-17 b · Gas Giant CoRoT-18 b · Gas Giant CoRoT-19 b · Gas Giant

Host System: CoRoT-23

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,900 K — hotter than the Sun (5,778 K)

Estimated Age

7.20 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.610 R☉

Stellar Mass

1.140 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.300 dex

Stellar density

0.500 g/cm³

Systemic radial velocity

-35.18 km/s

Rotational v·sin i

9.00 km/s

Metallicity ratio

[Fe/H]

Distance

1,060.97 parsec

Light-years 3,460.42 ly

V-band magnitude

15.68 mag

Voyager-speed travel 61,024,456 yr

Multi-band Host Photometry — 13 bands

Astrometric Data

Parallax

0.915 mas

Total Proper Motion

8.663 mas/yr

PM Right Ascension

-2.41 mas/yr

PM Declination

-8.32 mas/yr

Galactic Cartesian (pc)

x = 0.169 · y = -0.983 · z = 0.076

Equatorial (J2000)

RA 279.78266° · Dec 4.35775°

Galactic ℓ, b

35.417° · 4.720°

Ecliptic λ, β

281.000° · 27.424°

HTM-20 index

-925412915