Key parameters at a glance

A radius of 13.40 Earth radii
A mass of 572.09 Earth masses
Surface gravity around 3.19 g
An orbital period of 14,386.000 days
Semi-major axis 11.8000 AU
Distance from Earth 49.75 light-years
Earth Similarity Index 0.359
Travel time at Voyager 1 speed 877,305 years

HD 140901 c Planet Profile

Physical Specs

Radius

13.40 R⊕

Radius (Jupiter)

1.200 R♃

Mass

572.09 M⊕

Mass (Jupiter)

1.800 M♃

Density

1.31 g/cm³

Surface Gravity

3.19 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.359

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#730of 1771

top 41.2%

This planet

13.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 114783 c 13.40 R⊕ HIP 79431 b 13.40 R⊕ HD 68988 b 13.40 R⊕

Metric	Earth	HD 140901 c	Jupiter
Radius (R⊕)	1.00	13.40	11.21
Mass (M⊕)	1.00	572.09	317.83
Density (g/cm³)	5.51	1.31	1.33
Surface Gravity (g)	1.00	3.19	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	572.091 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

HD 140901

HIP

HIP 77358

TIC

TIC 179348425

Gaia DR2

Gaia DR2 6009538585839374336

Gaia DR3

Gaia DR3 6009538585839374336

System

HIP 77358

Percentile among Gas Giant cohort

Radius 13.400 R⊕ · percentile 56 / cohort 1771

Mass 572.091 M⊕ · percentile 52 / cohort 1747

Orbital period 14,386.00 d · percentile 96 / cohort 1533

Distance 15.25 pc · percentile 2 / cohort 1759

ESI 0.359 · percentile 73 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

14,386.000 days

Semi-major axis

11.8000 AU

Eccentricity

0.770

Inclination

40.00 °

Year Length

A year here lasts about 39.39 Earth years on a highly eccentric trajectory at a mean orbital distance of 11.8000 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.359

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: HD 140901

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,610 K — cooler than the Sun (5,778 K)

Estimated Age

3.20 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.950 R☉

Stellar Mass

1.060 M☉

Metallicity [Fe/H]

0.09

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

1.554 g/cm³

Systemic radial velocity

-6.90 km/s

Rotational v·sin i

2.00 km/s

Activity index (log R'HK)

-4.790

Metallicity ratio

[M/H]

Distance

15.25 parsec

Light-years 49.75 ly

V-band magnitude

6.01 mag

Voyager-speed travel 877,305 yr

Multi-band Host Photometry — 8 bands

Astrometric Data

Parallax

65.533 mas

Total Proper Motion

467.153 mas/yr

PM Right Ascension

-415.24 mas/yr

PM Declination

-214.03 mas/yr

Galactic Cartesian (pc)

x = -0.431 · y = -0.661 · z = -0.615

Equatorial (J2000)

RA 236.86899° · Dec -37.91723°

Galactic ℓ, b

337.161° · 12.989°

Ecliptic λ, β

243.114° · -17.519°

HTM-20 index

74890998