Key parameters at a glance

A radius of 10.30 Earth radii
A mass of 75.33 Earth masses
Surface gravity around 0.71 g
An orbital period of 960.410 days
Semi-major axis 1.8370 AU
Distance from Earth 122.80 light-years
Earth Similarity Index 0.300
Travel time at Voyager 1 speed 2,165,572 years

HD 126525 b Planet Profile

Physical Specs

Radius

10.30 R⊕

Radius (Jupiter)

0.919 R♃

Mass

75.33 M⊕

Mass (Jupiter)

0.237 M♃

Density

0.38 g/cm³

Surface Gravity

0.71 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.300

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Radial Velocity

Facility La Silla Observatory

Telescope 3.6 m ESO Telescope

Size rank in cohort

Rank by radius

#1743of 1771

top 98.4%

This planet

10.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-1386 c 10.30 R⊕ OGLE-2017-BLG-0364L b 10.30 R⊕ TOI-1338 c 10.30 R⊕

Metric	Earth	HD 126525 b	Jupiter
Radius (R⊕)	1.00	10.30	11.21
Mass (M⊕)	1.00	75.33	317.83
Density (g/cm³)	5.51	0.38	1.33
Surface Gravity (g)	1.00	0.71	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	75.326 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 126525

HIP

HIP 70695

TIC

TIC 333459486

Gaia DR2

Gaia DR2 5898641087150340224

Gaia DR3

Gaia DR3 5898641087150340224

System

HD 126525

Percentile among Gas Giant cohort

Radius 10.300 R⊕ · percentile 1 / cohort 1771

Mass 75.326 M⊕ · percentile 2 / cohort 1747

Orbital period 960.41 d · percentile 76 / cohort 1533

Distance 37.65 pc · percentile 12 / cohort 1759

ESI 0.300 · percentile 58 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

960.410 days

Semi-major axis

1.8370 AU

Eccentricity

0.035

Inclination

— °

Year Length

A year here lasts about 2.63 Earth years on a nearly circular orbit at a mean orbital distance of 1.8370 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.300

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Barbato et al. 2018

Instrument

HARPS Spectrograph

Publication

2018-08

Observation locale

Ground

Discovery cohort

Planets confirmed in 2018 at La Silla Observatory (5 shown).

GJ 1132 c · Super-Earth HD 215152 b · Unclassified HD 215152 c · Unclassified HD 215152 d · Unclassified HD 215152 e · Unclassified

Host System: HD 126525

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,638 K — cooler than the Sun (5,778 K)

Estimated Age

9.67 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.979 R☉

Stellar Mass

0.897 M☉

Metallicity [Fe/H]

-0.10

Extended Stellar Properties

Surface gravity (log g)

4.382 dex

Stellar density

1.417 g/cm³

Systemic radial velocity

12.50 km/s

Rotational v·sin i

3.00 km/s

Rotation period

40.00 days

Activity index (log R'HK)

-4.930

Metallicity ratio

[Fe/H]

Distance

37.65 parsec

Light-years 122.80 ly

V-band magnitude

7.85 mag

Voyager-speed travel 2,165,572 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

26.531 mas

Total Proper Motion

307.854 mas/yr

PM Right Ascension

-305.20 mas/yr

PM Declination

40.34 mas/yr

Galactic Cartesian (pc)

x = -0.493 · y = -0.370 · z = -0.787

Equatorial (J2000)

RA 216.88525° · Dec -51.93291°

Galactic ℓ, b

317.624° · 8.176°

Ecliptic λ, β

232.923° · -35.108°

HTM-20 index

-954390880