Key parameters at a glance

A radius of 10.10 Earth radii
A mass of 73.10 Earth masses
Surface gravity around 0.72 g
An orbital period of 84.963 days
Semi-major axis 0.4060 AU
Distance from Earth 173.69 light-years
Earth Similarity Index 0.304
Travel time at Voyager 1 speed 3,062,974 years

HD 122562 c Planet Profile

Physical Specs

Radius

10.10 R⊕

Radius (Jupiter)

0.903 R♃

Mass

73.10 M⊕

Mass (Jupiter)

0.230 M♃

Density

0.39 g/cm³

Surface Gravity

0.72 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.304

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1759of 1771

top 99.3%

This planet

10.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 204941 b 10.10 R⊕ TOI-216.01 10.10 R⊕ HD 3651 b 10.10 R⊕

Metric	Earth	HD 122562 c	Jupiter
Radius (R⊕)	1.00	10.10	11.21
Mass (M⊕)	1.00	73.10	317.83
Density (g/cm³)	5.51	0.39	1.33
Surface Gravity (g)	1.00	0.72	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	73.101 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 122562

TIC

TIC 233435627

Gaia DR2

Gaia DR2 1247279294695842432

Gaia DR3

Gaia DR3 1247279294695975168

System

HD 122562

Percentile among Gas Giant cohort

Radius 10.100 R⊕ · percentile 0 / cohort 1771

Mass 73.101 M⊕ · percentile 1 / cohort 1747

Orbital period 84.96 d · percentile 53 / cohort 1533

Distance 53.25 pc · percentile 21 / cohort 1759

ESI 0.304 · percentile 59 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

84.963 days

Semi-major axis

0.4060 AU

Eccentricity

0.228

Inclination

— °

Year Length

A year here lasts approximately 84.96 Earth days (23.3% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.4060 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.304

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 122562

Spectral Class

K-type orange

Effective Temperature

4,956 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

2.166 R☉

Stellar Mass

1.241 M☉

Metallicity [Fe/H]

—

Distance

53.25 parsec

Light-years 173.69 ly

V-band magnitude

7.66 mag

Voyager-speed travel 3,062,974 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

18.750 mas

Total Proper Motion

129.081 mas/yr

PM Right Ascension

110.23 mas/yr

PM Declination

-67.17 mas/yr

Galactic Cartesian (pc)

x = -0.804 · y = -0.475 · z = 0.356

Equatorial (J2000)

RA 210.58869° · Dec 20.88103°

Galactic ℓ, b

15.638° · 72.663°

Ecliptic λ, β

200.103° · 31.074°

HTM-20 index

1787754798

Similar Worlds

HD 3651 b

Gas Giant · K-type orange

Radius 10.10 R⊕ · 36.3 ly

TOI-216.01

Gas Giant · K-type orange

Radius 10.10 R⊕ · 580.4 ly

HD 204941 b

Gas Giant · K-type orange

Radius 10.10 R⊕ · 93.7 ly

WASP-132 b

Gas Giant · K-type orange

Radius 10.10 R⊕ · 400.9 ly

CoRoT-29 b

Gas Giant · K-type orange

Radius 10.09 R⊕ · 2,630.5 ly

WASP-145 A b

Gas Giant · K-type orange

Radius 10.09 R⊕ · 297.8 ly

Explore Related Categories

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