Key parameters at a glance

A radius of 12.80 Earth radii
A mass of 1,906.98 Earth masses
Surface gravity around 11.64 g
An orbital period of 4,100.000 days
Semi-major axis 5.7000 AU
Distance from Earth 1,694.22 light-years
Earth Similarity Index 0.438
Travel time at Voyager 1 speed 29,877,636 years

HD 238914 b Planet Profile

Physical Specs

Radius

12.80 R⊕

Radius (Jupiter)

1.140 R♃

Mass

1,906.98 M⊕

Mass (Jupiter)

6.000 M♃

Density

5.00 g/cm³

Surface Gravity

11.64 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.438

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1063of 1771

top 60.0%

This planet

12.80R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 240210 b 12.80 R⊕ HD 29985 b 12.80 R⊕ HD 148164 c 12.80 R⊕

Metric	Earth	HD 238914 b	Jupiter
Radius (R⊕)	1.00	12.80	11.21
Mass (M⊕)	1.00	1,906.98	317.83
Density (g/cm³)	5.51	5.00	1.33
Surface Gravity (g)	1.00	11.64	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	1,906.980 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 238914

HIP

HIP 91388

TIC

TIC 359558085

Gaia DR2

Gaia DR2 2154807121292791040

Gaia DR3

Gaia DR3 2154807121292791040

System

HD 238914

Percentile among Gas Giant cohort

Radius 12.800 R⊕ · percentile 37 / cohort 1771

Mass 1,906.980 M⊕ · percentile 79 / cohort 1747

Orbital period 4,100.00 d · percentile 91 / cohort 1533

Distance 519.45 pc · percentile 76 / cohort 1759

ESI 0.438 · percentile 97 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

4,100.000 days

Semi-major axis

5.7000 AU

Eccentricity

0.560

Inclination

— °

Year Length

A year here lasts about 11.23 Earth years on a highly eccentric trajectory at a mean orbital distance of 5.7000 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.438

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Adam Oacute W et al. 2018

Instrument

Multiple Instruments

Publication

2018-05

Observation locale

Ground

Discovery cohort

Planets confirmed in 2018 at Multiple Observatories (5 shown).

LHS 1140 c · Super-Earth TCP J05074264+2447555 b · Neptune-like TYC 3318-01333-1 b · Gas Giant BD+48 740 b · Gas Giant CoRoT-20 c · Gas Giant

Host System: HD 238914

Spectral Class

K-type orange

Effective Temperature

4,769 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

12.730 R☉

Stellar Mass

1.470 M☉

Metallicity [Fe/H]

-0.25

Extended Stellar Properties

Surface gravity (log g)

2.370 dex

Systemic radial velocity

-6.72 km/s

Rotational v·sin i

2.50 km/s

Rotation period

257.00 days

Metallicity ratio

[Fe/H]

Distance

519.45 parsec

Light-years 1,694.22 ly

V-band magnitude

8.77 mag

Voyager-speed travel 29,877,636 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

1.897 mas

Total Proper Motion

6.457 mas/yr

PM Right Ascension

-3.89 mas/yr

PM Declination

5.15 mas/yr

Galactic Cartesian (pc)

x = 0.085 · y = -0.504 · z = 0.859

Equatorial (J2000)

RA 279.58421° · Dec 59.25388°

Galactic ℓ, b

88.751° · 24.701°

Ecliptic λ, β

305.202° · 81.510°

HTM-20 index

-1199398791

Similar Worlds

HD 99706 c

Gas Giant · K-type orange

Radius 12.80 R⊕ · 478.1 ly

HD 135872 b

Gas Giant · K-type orange

Radius 12.80 R⊕ · 268.8 ly

WASP-132 d

Gas Giant · K-type orange

Radius 12.80 R⊕ · 400.9 ly

gam Lib c

Gas Giant · K-type orange

Radius 12.80 R⊕ · 154.6 ly

HD 240210 b

Gas Giant · K-type orange

Radius 12.80 R⊕ · 1,214.6 ly

WISPIT 1 c

Gas Giant · K-type orange

Radius 12.80 R⊕ · 750.2 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Multiple Observatories Mission K-type orange Hosts