Key parameters at a glance

A radius of 11.43 Earth radii
A mass of 772.29 Earth masses
Surface gravity around 5.91 g
An orbital period of 3.768 days
Semi-major axis 0.0461 AU
Equilibrium temperature 1,626 K (1353 °C)
Distance from Earth 3,835.99 light-years
Earth Similarity Index 0.100
Travel time at Voyager 1 speed 67,647,608 years

CoRoT-17 b Planet Profile

Physical Specs

Radius

11.43 R⊕

Radius (Jupiter)

1.020 R♃

Mass

772.29 M⊕

Mass (Jupiter)

2.430 M♃

Density

2.82 g/cm³

Surface Gravity

5.91 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.100

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

#1600of 1771

top 90.3%

This planet

11.43R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HAT-P-27 b 11.43 R⊕ HATS-4 b 11.43 R⊕ TOI-7041 b 11.43 R⊕

Metric	Earth	CoRoT-17 b	Jupiter
Radius (R⊕)	1.00	11.43	11.21
Mass (M⊕)	1.00	772.29	317.83
Density (g/cm³)	5.51	2.82	1.33
Surface Gravity (g)	1.00	5.91	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	772.290 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 218299312

Gaia DR2

Gaia DR2 4255957040079935488

Gaia DR3

Gaia DR3 4255957040079935488

System

CoRoT-17

Percentile among Gas Giant cohort

Radius 11.430 R⊕ · percentile 10 / cohort 1771

Mass 772.290 M⊕ · percentile 60 / cohort 1747

Orbital period 3.77 d · percentile 26 / cohort 1533

Distance 1,176.12 pc · percentile 88 / cohort 1759

ESI 0.100 · percentile 26 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.768 days

Semi-major axis

0.0461 AU

Eccentricity

0.000

Inclination

88.34 °

Year Length

A year here lasts approximately 3.77 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0461 AU.

Transit Fingerprint

Depth

0.440 %

Duration

4.720 h

Impact parameter b

0.180

Transit midpoint (BJD)

2,454,923.3093

Photometric dip

Transit produces a flux drop of 4,400 ppm lasting ≈ 4.72 h.

Extended Orbital Architecture

Semi-major axis / stellar radius

6.230

Impact parameter (b)

0.180

RV semi-amplitude (K)

312.400 m/s

Transit mid-time (BJD)

2,454,923.3093

Long. of periastron (ω)

0.00°

Angular separation (arcsec)

0.03920

Eq. Temperature

1,626K

(1353 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.100

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

Csizmadia et al. 2011

Instrument

CoRoT CCD Array

Publication

2011-07

Observation locale

Space

Discovery cohort

Planets confirmed in 2011 at CoRoT (5 shown).

CoRoT-16 b · Gas Giant CoRoT-20 b · Neptune-like CoRoT-18 b · Gas Giant CoRoT-23 b · Gas Giant CoRoT-19 b · Gas Giant

Host System: CoRoT-17

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,740 K — cooler than the Sun (5,778 K)

Estimated Age

10.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.590 R☉

Stellar Mass

1.040 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.400 dex

Stellar density

0.320 g/cm³

Systemic radial velocity

54.77 km/s

Rotational v·sin i

4.50 km/s

Metallicity ratio

[Fe/H]

Distance

1,176.12 parsec

Light-years 3,835.99 ly

V-band magnitude

16.29 mag

Voyager-speed travel 67,647,608 yr

Multi-band Host Photometry — 9 bands

Astrometric Data

Parallax

0.823 mas

Total Proper Motion

9.243 mas/yr

PM Right Ascension

-4.54 mas/yr

PM Declination

-8.05 mas/yr

Galactic Cartesian (pc)

x = 0.150 · y = -0.982 · z = -0.115

Equatorial (J2000)

RA 278.69924° · Dec -6.61229°

Galactic ℓ, b

25.153° · 0.666°

Ecliptic λ, β

279.014° · 16.555°

HTM-20 index

-1771035649