Key parameters at a glance

A radius of 12.30 Earth radii
A mass of 4,069.16 Earth masses
Surface gravity around 26.90 g
An orbital period of 25,533.114 days
Semi-major axis 16.7610 AU
Distance from Earth 120.93 light-years
Earth Similarity Index 0.349
Travel time at Voyager 1 speed 2,132,684 years

1 sibling around GJ 2030

GJ 2030 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
GJ 2030 b	Sub-Neptune	2.03	4.77	2.381	—	2022
GJ 2030 c this	Gas Giant	12.30	4,069.16	25,533.114	—	2022

GJ 2030 c Planet Profile

Physical Specs

Radius

12.30 R⊕

Radius (Jupiter)

1.100 R♃

Mass

4,069.16 M⊕

Mass (Jupiter)

12.803 M♃

Density

12.00 g/cm³

Surface Gravity

26.90 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.349

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1349of 1771

top 76.1%

This planet

12.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HAT-P-13 c 12.30 R⊕ HD 22781 b 12.30 R⊕ CHXR 73 b 12.30 R⊕

Metric	Earth	GJ 2030 c	Jupiter
Radius (R⊕)	1.00	12.30	11.21
Mass (M⊕)	1.00	4,069.16	317.83
Density (g/cm³)	5.51	12.00	1.33
Surface Gravity (g)	1.00	26.90	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4,069.157 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 9967949

Gaia DR2

Gaia DR2 5168359139139252352

Gaia DR3

Gaia DR3 5168359139139252352

System

GJ 2030

Percentile among Gas Giant cohort

Radius 12.300 R⊕ · percentile 22 / cohort 1771

Mass 4,069.157 M⊕ · percentile 91 / cohort 1747

Orbital period 25,533.11 d · percentile 98 / cohort 1533

Distance 37.08 pc · percentile 12 / cohort 1759

ESI 0.349 · percentile 71 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

25,533.114 days

Semi-major axis

16.7610 AU

Eccentricity

0.041

Inclination

17.00 °

Year Length

A year here lasts about 69.91 Earth years on a nearly circular orbit at a mean orbital distance of 16.7610 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.349

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Feng et al. 2022

Instrument

Multiple Instruments

Publication

2022-09

Observation locale

Ground

Discovery cohort

Planets confirmed in 2022 at Multiple Observatories (12 shown).

Kepler-138 e · Rocky Terrestrial HD 93351 b · Super-Earth GJ 1002 b · Rocky Terrestrial GJ 2030 b · Sub-Neptune GJ 3929 c · Sub-Neptune HD 217786 c · Sub-Neptune GJ 1002 c · Rocky Terrestrial HD 155918 b · Sub-Neptune HD 213519 b · Sub-Neptune HD 191939 g · Sub-Neptune GJ 514 b · Sub-Neptune HD 12235 b · Sub-Neptune

Host System: GJ 2030

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,485 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

2.241 R☉

Stellar Mass

0.960 M☉

Metallicity [Fe/H]

-0.40

Extended Stellar Properties

Surface gravity (log g)

3.719 dex

Stellar density

0.120 g/cm³

Metallicity ratio

[M/H]

Distance

37.08 parsec

Light-years 120.93 ly

V-band magnitude

6.21 mag

Voyager-speed travel 2,132,684 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

26.941 mas

Total Proper Motion

219.542 mas/yr

PM Right Ascension

1.76 mas/yr

PM Declination

-219.54 mas/yr

Galactic Cartesian (pc)

x = 0.626 · y = 0.768 · z = -0.136

Equatorial (J2000)

RA 50.82376° · Dec -7.79504°

Galactic ℓ, b

191.809° · -49.202°

Ecliptic λ, β

46.111° · -25.464°

HTM-20 index

-1687022969