Key parameters at a glance

A radius of 12.80 Earth radii
A mass of 1,744.56 Earth masses
Surface gravity around 10.65 g
An orbital period of 2,422.326 days
Semi-major axis 4.1720 AU
Distance from Earth 268.83 light-years
Earth Similarity Index 0.435
Travel time at Voyager 1 speed 4,740,895 years

HD 135872 b Planet Profile

Physical Specs

Radius

12.80 R⊕

Radius (Jupiter)

1.140 R♃

Mass

1,744.56 M⊕

Mass (Jupiter)

5.489 M♃

Density

4.57 g/cm³

Surface Gravity

10.65 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.435

HZ Position Unknown

Controversial No

Discovery

Year 2022

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 135872 b	Jupiter
Radius (R⊕)	1.00	12.80	11.21
Mass (M⊕)	1.00	1,744.56	317.83
Density (g/cm³)	5.51	4.57	1.33
Surface Gravity (g)	1.00	10.65	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	1,744.560 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

HD 135872

TIC

TIC 38948719

Gaia DR2

Gaia DR2 6334990316794611200

Gaia DR3

Gaia DR3 6334990316794611200

System

HD 135872

Percentile among Gas Giant cohort

Radius 12.800 R⊕ · percentile 37 / cohort 1771

Mass 1,744.560 M⊕ · percentile 77 / cohort 1747

Orbital period 2,422.33 d · percentile 86 / cohort 1533

Distance 82.43 pc · percentile 31 / cohort 1759

ESI 0.435 · percentile 96 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

2,422.326 days

Semi-major axis

4.1720 AU

Eccentricity

0.164

Inclination

93.87 °

Year Length

A year here lasts about 6.63 Earth years on a mildly elliptical path at a mean orbital distance of 4.1720 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.435

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 135872

Spectral Class

K-type orange

Effective Temperature

4,992 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

3.930 R☉

Stellar Mass

1.646 M☉

Metallicity [Fe/H]

0.09

Distance

82.43 parsec

Light-years 268.83 ly

V-band magnitude

7.28 mag

Voyager-speed travel 4,740,895 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

12.104 mas

Total Proper Motion

82.068 mas/yr

PM Right Ascension

-80.87 mas/yr

PM Declination

-13.96 mas/yr

Galactic Cartesian (pc)

x = -0.648 · y = -0.756 · z = -0.091

Equatorial (J2000)

RA 229.42136° · Dec -5.20247°

Galactic ℓ, b

356.030° · 42.110°

Ecliptic λ, β

228.411° · 12.573°

HTM-20 index

1177442741

Similar Worlds

HD 99706 c

Gas Giant · K-type orange

Radius 12.80 R⊕ · 478.1 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

Kepler-56 d

Gas Giant · K-type orange

Radius 12.80 R⊕ · 2,977.8 ly

Explore Related Categories

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