Key parameters at a glance

A radius of 13.90 Earth radii
A mass of 266.98 Earth masses
Surface gravity around 1.38 g
An orbital period of 4,540.000 days
Semi-major axis 5.1300 AU
Distance from Earth 156.14 light-years
Earth Similarity Index 0.294
Travel time at Voyager 1 speed 2,753,598 years

HD 136925 b Planet Profile

Physical Specs

Radius

13.90 R⊕

Radius (Jupiter)

1.240 R♃

Mass

266.98 M⊕

Mass (Jupiter)

0.840 M♃

Density

0.55 g/cm³

Surface Gravity

1.38 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.294

HZ Position Unknown

Controversial No

Discovery

Year 2021

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#456of 1771

top 25.7%

This planet

13.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

24 Sex c 13.90 R⊕ HD 148156 b 13.90 R⊕ HD 134987 c 13.90 R⊕

Metric	Earth	HD 136925 b	Jupiter
Radius (R⊕)	1.00	13.90	11.21
Mass (M⊕)	1.00	266.98	317.83
Density (g/cm³)	5.51	0.55	1.33
Surface Gravity (g)	1.00	1.38	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	266.976 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 136925

HIP

HIP 75281

TIC

TIC 400015692

Gaia DR2

Gaia DR2 1170797781264303616

Gaia DR3

Gaia DR3 1170797781264303616

System

HD 136925

Percentile among Gas Giant cohort

Radius 13.900 R⊕ · percentile 72 / cohort 1771

Mass 266.976 M⊕ · percentile 29 / cohort 1747

Orbital period 4,540.00 d · percentile 92 / cohort 1533

Distance 47.87 pc · percentile 18 / cohort 1759

ESI 0.294 · percentile 56 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

4,540.000 days

Semi-major axis

5.1300 AU

Eccentricity

0.103

Inclination

— °

Year Length

A year here lasts about 12.43 Earth years on a mildly elliptical path at a mean orbital distance of 5.1300 AU.

Extended Orbital Architecture

RV semi-amplitude (K)

11.400 m/s

Transit mid-time (BJD)

2,449,690.0000

Long. of periastron (ω)

24.06°

Angular separation (arcsec)

107.00000

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.294

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Rosenthal et al. 2021

Instrument

Multiple Instruments

Publication

2021-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2021 at Multiple Observatories (12 shown).

L 98-59 e · Super-Earth GJ 393 b · Rocky Terrestrial HD 168009 b · Sub-Neptune HD 164922 e · Sub-Neptune HD 95735 c · Sub-Neptune HD 141004 b · Sub-Neptune HD 107148 c · Neptune-like TOI-178 f · Sub-Neptune TYC 0434-04538-1 b · Gas Giant HIP 56640 b · Gas Giant HD 137496 c · Gas Giant HD 156668 c · Neptune-like

Host System: HD 136925

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,773 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.193 R☉

Stellar Mass

0.875 M☉

Metallicity [Fe/H]

-0.22

Extended Stellar Properties

Surface gravity (log g)

4.226 dex

Stellar density

0.928 g/cm³

Metallicity ratio

[Fe/H]

Distance

47.87 parsec

Light-years 156.14 ly

V-band magnitude

7.91 mag

Voyager-speed travel 2,753,598 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

20.860 mas

Total Proper Motion

272.432 mas/yr

PM Right Ascension

-271.08 mas/yr

PM Declination

-27.13 mas/yr

Galactic Cartesian (pc)

x = -0.616 · y = -0.753 · z = 0.231

Equatorial (J2000)

RA 230.71575° · Dec 13.36631°

Galactic ℓ, b

19.324° · 52.099°

Ecliptic λ, β

224.191° · 30.773°

HTM-20 index

728124635