Key parameters at a glance

A radius of 12.30 Earth radii
A mass of 4,164.19 Earth masses
Surface gravity around 27.52 g
An orbital period of 1,187.598 days
Semi-major axis 2.3270 AU
Distance from Earth 167.76 light-years
Earth Similarity Index 0.346
Travel time at Voyager 1 speed 2,958,470 years

HD 136118 b Planet Profile

Physical Specs

Radius

12.30 R⊕

Radius (Jupiter)

1.100 R♃

Mass

4,164.19 M⊕

Mass (Jupiter)

13.102 M♃

Density

12.30 g/cm³

Surface Gravity

27.52 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.346

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	HD 136118 b	Jupiter
Radius (R⊕)	1.00	12.30	11.21
Mass (M⊕)	1.00	4,164.19	317.83
Density (g/cm³)	5.51	12.30	1.33
Surface Gravity (g)	1.00	27.52	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4,164.188 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	3,775.801 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 136118

HIP

HIP 74948

TIC

TIC 38991680

Gaia DR2

Gaia DR2 4415515934099120768

Gaia DR3

Gaia DR3 4415515934099120768

System

HD 136118

Percentile among Gas Giant cohort

Radius 12.300 R⊕ · percentile 22 / cohort 1771

Mass 4,164.188 M⊕ · percentile 92 / cohort 1747

Orbital period 1,187.60 d · percentile 80 / cohort 1533

Distance 51.44 pc · percentile 20 / cohort 1759

ESI 0.346 · percentile 70 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,187.598 days

Semi-major axis

2.3270 AU

Eccentricity

0.344

Inclination

116.78 °

Year Length

A year here lasts about 3.25 Earth years on a highly eccentric trajectory at a mean orbital distance of 2.3270 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.346

0 = alien, 1 = Earth-identical

Detection Signatures

Radial velocity

Stellar wobble has been measured spectroscopically.

Astrometry

Positional wobble of the host star was measured.

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: HD 136118

Spectral Class

F-type yellow-white

Effective Temperature

6,097 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.678 R☉

Stellar Mass

1.180 M☉

Metallicity [Fe/H]

-0.05

Extended Stellar Properties

Surface gravity (log g)

4.053 dex

Stellar density

0.352 g/cm³

Metallicity ratio

[Fe/H]

Distance

51.44 parsec

Light-years 167.76 ly

V-band magnitude

6.95 mag

Voyager-speed travel 2,958,470 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

19.413 mas

Total Proper Motion

125.781 mas/yr

PM Right Ascension

-123.75 mas/yr

PM Declination

22.52 mas/yr

Galactic Cartesian (pc)

x = -0.646 · y = -0.763 · z = -0.028

Equatorial (J2000)

RA 229.73060° · Dec -1.59229°

Galactic ℓ, b

359.941° · 44.350°

Ecliptic λ, β

227.726° · 16.135°

HTM-20 index

-1523458835