Key parameters at a glance

A radius of 12.20 Earth radii
A mass of 5,252.75 Earth masses
Surface gravity around 35.29 g
An orbital period of 26,308.656 days
Semi-major axis 17.8480 AU
Distance from Earth 160.36 light-years
Earth Similarity Index 0.316
Travel time at Voyager 1 speed 2,827,916 years

1 sibling around HD 25912

HD 25912 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
HD 25912 b	Neptune-like	6.90	38.14	41.832	—	2022
HD 25912 c this	Gas Giant	12.20	5,252.75	26,308.656	—	2022

HD 25912 c Planet Profile

Physical Specs

Radius

12.20 R⊕

Radius (Jupiter)

1.090 R♃

Mass

5,252.75 M⊕

Mass (Jupiter)

16.527 M♃

Density

15.90 g/cm³

Surface Gravity

35.29 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.316

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1410of 1771

top 79.6%

This planet

12.20R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

FU Tau b 12.20 R⊕ HD 168443 c 12.20 R⊕ HIP 5158 c 12.20 R⊕

Metric	Earth	HD 25912 c	Jupiter
Radius (R⊕)	1.00	12.20	11.21
Mass (M⊕)	1.00	5,252.75	317.83
Density (g/cm³)	5.51	15.90	1.33
Surface Gravity (g)	1.00	35.29	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	5,252.750 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

HD 25912

TIC

TIC 237356930

Gaia DR2

Gaia DR2 4828528063821835648

Gaia DR3

Gaia DR3 4828528063821835648

System

HD 25912

Percentile among Gas Giant cohort

Radius 12.200 R⊕ · percentile 19 / cohort 1771

Mass 5,252.750 M⊕ · percentile 95 / cohort 1747

Orbital period 26,308.66 d · percentile 98 / cohort 1533

Distance 49.17 pc · percentile 19 / cohort 1759

ESI 0.316 · percentile 62 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

26,308.656 days

Semi-major axis

17.8480 AU

Eccentricity

0.051

Inclination

88.33 °

Year Length

A year here lasts about 72.03 Earth years on a nearly circular orbit at a mean orbital distance of 17.8480 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.316

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 25912

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,921 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.996 R☉

Stellar Mass

1.080 M☉

Metallicity [Fe/H]

0.12

Extended Stellar Properties

Surface gravity (log g)

4.475 dex

Stellar density

1.542 g/cm³

Metallicity ratio

[M/H]

Distance

49.17 parsec

Light-years 160.36 ly

V-band magnitude

8.20 mag

Voyager-speed travel 2,827,916 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

20.310 mas

Total Proper Motion

169.348 mas/yr

PM Right Ascension

-68.61 mas/yr

PM Declination

-154.83 mas/yr

Galactic Cartesian (pc)

x = 0.300 · y = 0.539 · z = -0.787

Equatorial (J2000)

RA 60.90750° · Dec -51.93151°

Galactic ℓ, b

261.122° · -46.539°

Ecliptic λ, β

31.143° · -69.494°

HTM-20 index

-1322754940