Key parameters at a glance

A radius of 12.60 Earth radii
A mass of 2,585.53 Earth masses
Surface gravity around 16.29 g
An orbital period of 5,138.437 days
Semi-major axis 5.0620 AU
Distance from Earth 83.13 light-years
Earth Similarity Index 0.412
Travel time at Voyager 1 speed 1,466,084 years

HIP 55507 b Planet Profile

Physical Specs

Radius

12.60 R⊕

Radius (Jupiter)

1.120 R♃

Mass

2,585.53 M⊕

Mass (Jupiter)

8.135 M♃

Density

7.10 g/cm³

Surface Gravity

16.29 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.412

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1179of 1771

top 66.5%

This planet

12.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-419 c 12.60 R⊕ 2MASS J04414489+2301513 b 12.60 R⊕ HD 47536 b 12.60 R⊕

Metric	Earth	HIP 55507 b	Jupiter
Radius (R⊕)	1.00	12.60	11.21
Mass (M⊕)	1.00	2,585.53	317.83
Density (g/cm³)	5.51	7.10	1.33
Surface Gravity (g)	1.00	16.29	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	2,585.534 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

HIP

HIP 55507

TIC

TIC 406781410

Gaia DR2

Gaia DR2 788340461203094912

Gaia DR3

Gaia DR3 788340461203094912

System

HIP 55507

Percentile among Gas Giant cohort

Radius 12.600 R⊕ · percentile 31 / cohort 1771

Mass 2,585.534 M⊕ · percentile 84 / cohort 1747

Orbital period 5,138.44 d · percentile 92 / cohort 1533

Distance 25.49 pc · percentile 6 / cohort 1759

ESI 0.412 · percentile 89 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

5,138.437 days

Semi-major axis

5.0620 AU

Eccentricity

0.362

Inclination

135.02 °

Year Length

A year here lasts about 14.07 Earth years on a highly eccentric trajectory at a mean orbital distance of 5.0620 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.412

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: HIP 55507

Spectral Class

M-type red dwarf

Effective Temperature

4,171 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.724 R☉

Stellar Mass

0.650 M☉

Metallicity [Fe/H]

—

Distance

25.49 parsec

Light-years 83.13 ly

V-band magnitude

9.80 mag

Voyager-speed travel 1,466,084 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

39.203 mas

Total Proper Motion

239.205 mas/yr

PM Right Ascension

-197.56 mas/yr

PM Declination

-134.88 mas/yr

Galactic Cartesian (pc)

x = -0.674 · y = 0.112 · z = 0.730

Equatorial (J2000)

RA 170.52272° · Dec 46.90780°

Galactic ℓ, b

158.598° · 63.557°

Ecliptic λ, β

149.701° · 38.701°

HTM-20 index

-1266826271

Similar Worlds

2MASS J04414489+2301513 b

Gas Giant · M-type red dwarf

Radius 12.60 R⊕ · 392.8 ly

TOI-5292 A b

Gas Giant · M-type red dwarf

Radius 12.64 R⊕ · 1,099.5 ly

TOI-4666 b

Gas Giant · M-type red dwarf

Radius 12.53 R⊕ · 504.7 ly

HD 36384 b

Gas Giant · M-type red dwarf

Radius 12.70 R⊕ · 682.7 ly

TYC 2187-512-1 b

Gas Giant · M-type red dwarf

Radius 12.50 R⊕ · 50.5 ly

ROXs 42 B b

Gas Giant · M-type red dwarf

Radius 12.50 R⊕ · 468.3 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Multiple Observatories Mission M-type red dwarf Hosts