Key parameters at a glance

A radius of 13.60 Earth radii
A mass of 476.74 Earth masses
Surface gravity around 2.58 g
An orbital period of 621.620 days
Semi-major axis 1.4400 AU
Distance from Earth 163.71 light-years
Earth Similarity Index 0.341
Travel time at Voyager 1 speed 2,886,970 years

HD 331093 b Planet Profile

Physical Specs

Radius

13.60 R⊕

Radius (Jupiter)

1.210 R♃

Mass

476.74 M⊕

Mass (Jupiter)

1.500 M♃

Density

1.04 g/cm³

Surface Gravity

2.58 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.341

HZ Position Unknown

Controversial No

Discovery

Year 2021

Method Radial Velocity

Facility Haute-Provence Observatory

Telescope 1.93 m Telescope

Size rank in cohort

Rank by radius

#609of 1771

top 34.3%

This planet

13.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 19994 b 13.60 R⊕ HD 205739 b 13.60 R⊕ HD 79498 b 13.60 R⊕

Metric	Earth	HD 331093 b	Jupiter
Radius (R⊕)	1.00	13.60	11.21
Mass (M⊕)	1.00	476.74	317.83
Density (g/cm³)	5.51	1.04	1.33
Surface Gravity (g)	1.00	2.58	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	476.743 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 331093

TIC

TIC 71528173

Gaia DR2

Gaia DR2 2033246455795280896

Gaia DR3

Gaia DR3 2033246455795280896

System

HD 331093

Percentile among Gas Giant cohort

Radius 13.600 R⊕ · percentile 63 / cohort 1771

Mass 476.743 M⊕ · percentile 47 / cohort 1747

Orbital period 621.62 d · percentile 71 / cohort 1533

Distance 50.19 pc · percentile 19 / cohort 1759

ESI 0.341 · percentile 68 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

621.620 days

Semi-major axis

1.4400 AU

Eccentricity

0.590

Inclination

0.37 °

Year Length

A year here lasts about 1.70 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.4400 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.341

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Dalal et al. 2021

Instrument

SOPHIE Spectrograph

Publication

2021-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2021 at Haute-Provence Observatory (11 shown).

HD 27969 b · Gas Giant HD 109286 b · Gas Giant HD 211403 b · Gas Giant HD 80869 b · Gas Giant BD+63 1405 b · Gas Giant BD+45 564 b · Gas Giant HD 95544 b · Gas Giant HD 115954 b · Gas Giant HD 124330 b · Gas Giant HD 155193 b · Gas Giant BD+55 362 b · Gas Giant

Host System: HD 331093

Spectral Class

K-type orange

Effective Temperature

5,544 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.111 R☉

Stellar Mass

1.030 M☉

Metallicity [Fe/H]

0.17

Extended Stellar Properties

Surface gravity (log g)

4.200 dex

Stellar density

0.986 g/cm³

Systemic radial velocity

-51.29 km/s

Rotational v·sin i

2.50 km/s

Metallicity ratio

[Fe/H]

Distance

50.19 parsec

Light-years 163.71 ly

V-band magnitude

8.38 mag

Voyager-speed travel 2,886,970 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

19.894 mas

Total Proper Motion

198.554 mas/yr

PM Right Ascension

-16.09 mas/yr

PM Declination

-197.90 mas/yr

Galactic Cartesian (pc)

x = 0.368 · y = -0.767 · z = 0.526

Equatorial (J2000)

RA 295.62001° · Dec 31.73955°

Galactic ℓ, b

66.664° · 4.169°

Ecliptic λ, β

306.643° · 51.969°

HTM-20 index

-1042493869

Similar Worlds

HS Psc b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 122.8 ly

HD 185283 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 102.4 ly

HD 167042 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 162.0 ly

HD 10442 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 441.5 ly

HD 83443 c

Gas Giant · K-type orange

Radius 13.60 R⊕ · 133.4 ly

HD 141399 c

Gas Giant · K-type orange

Radius 13.60 R⊕ · 120.7 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Haute-Provence Observatory Mission K-type orange Hosts