Key parameters at a glance

A radius of 13.30 Earth radii
A mass of 731.01 Earth masses
Surface gravity around 4.13 g
An orbital period of 4,055.000 days
Semi-major axis 5.4000 AU
Distance from Earth 184.34 light-years
Earth Similarity Index 0.377
Travel time at Voyager 1 speed 3,250,780 years

HD 135625 b Planet Profile

Physical Specs

Radius

13.30 R⊕

Radius (Jupiter)

1.190 R♃

Mass

731.01 M⊕

Mass (Jupiter)

2.300 M♃

Density

1.71 g/cm³

Surface Gravity

4.13 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.377

HZ Position Unknown

Controversial No

Discovery

Year 2023

Method Radial Velocity

Facility La Silla Observatory

Telescope 3.6 m ESO Telescope

Size rank in cohort

Rank by radius

#793of 1771

top 44.7%

This planet

13.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 12661 b 13.30 R⊕ HD 129445 b 13.30 R⊕ GJ 876 b 13.30 R⊕

Metric	Earth	HD 135625 b	Jupiter
Radius (R⊕)	1.00	13.30	11.21
Mass (M⊕)	1.00	731.01	317.83
Density (g/cm³)	5.51	1.71	1.33
Surface Gravity (g)	1.00	4.13	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	731.005 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

HD 135625

HIP

HIP 74856

TIC

TIC 143713715

Gaia DR2

Gaia DR2 6000000322464144896

Gaia DR3

Gaia DR3 6000000322464144896

System

HD 135625

Percentile among Gas Giant cohort

Radius 13.300 R⊕ · percentile 53 / cohort 1771

Mass 731.005 M⊕ · percentile 58 / cohort 1747

Orbital period 4,055.00 d · percentile 91 / cohort 1533

Distance 56.52 pc · percentile 23 / cohort 1759

ESI 0.377 · percentile 78 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

4,055.000 days

Semi-major axis

5.4000 AU

Eccentricity

0.160

Inclination

93.00 °

Year Length

A year here lasts about 11.10 Earth years on a mildly elliptical path at a mean orbital distance of 5.4000 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.377

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Philipot et al. 2023

Instrument

HARPS Spectrograph

Publication

2023-08

Observation locale

Ground

Discovery cohort

Planets confirmed in 2023 at La Silla Observatory (12 shown).

GJ 367 c · Super-Earth GJ 367 d · Sub-Neptune TOI-544 c · Neptune-like HD 74698 b · Neptune-like HD 75302 b · Gas Giant BD-210397 c · Gas Giant HD 108202 b · Gas Giant HIP 54597 b · Gas Giant HD 185283 b · Gas Giant HD 73256 c · Gas Giant BD-210397 b · Gas Giant HD 94771 b · Gas Giant

Host System: HD 135625

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

6,041 K — hotter than the Sun (5,778 K)

Estimated Age

4.40 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.357 R☉

Stellar Mass

1.280 M☉

Metallicity [Fe/H]

0.12

Extended Stellar Properties

Surface gravity (log g)

4.222 dex

Stellar density

0.631 g/cm³

Rotational v·sin i

4.50 km/s

Activity index (log R'HK)

-4.990

Metallicity ratio

[M/H]

Distance

56.52 parsec

Light-years 184.34 ly

V-band magnitude

7.72 mag

Voyager-speed travel 3,250,780 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

17.665 mas

Total Proper Motion

97.195 mas/yr

PM Right Ascension

-88.62 mas/yr

PM Declination

-39.92 mas/yr

Galactic Cartesian (pc)

x = -0.452 · y = -0.529 · z = -0.718

Equatorial (J2000)

RA 229.45115° · Dec -45.92259°

Galactic ℓ, b

327.814° · 9.759°

Ecliptic λ, β

239.594° · -26.671°

HTM-20 index

-1197650684