Key parameters at a glance

A radius of 13.10 Earth radii
A mass of 982.09 Earth masses
Surface gravity around 5.72 g
An orbital period of 1,193.300 days
Semi-major axis 2.4820 AU
Distance from Earth 245.00 light-years
Earth Similarity Index 0.400
Travel time at Voyager 1 speed 4,320,493 years

HD 69123 b Planet Profile

Physical Specs

Radius

13.10 R⊕

Radius (Jupiter)

1.170 R♃

Mass

982.09 M⊕

Mass (Jupiter)

3.090 M♃

Density

2.40 g/cm³

Surface Gravity

5.72 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.400

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility La Silla Observatory

Telescope 1.2 m Leonhard Euler Telescope

Size rank in cohort

Rank by radius

#910of 1771

top 51.3%

This planet

13.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

GJ 3021 b 13.10 R⊕ HD 221287 b 13.10 R⊕ HD 37605 c 13.10 R⊕

Metric	Earth	HD 69123 b	Jupiter
Radius (R⊕)	1.00	13.10	11.21
Mass (M⊕)	1.00	982.09	317.83
Density (g/cm³)	5.51	2.40	1.33
Surface Gravity (g)	1.00	5.72	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	982.090 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	966.198 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 69123

HIP

HIP 40344

TIC

TIC 146264536

Gaia DR2

Gaia DR2 5544699390684005248

Gaia DR3

Gaia DR3 5544699390684005248

System

HD 69123

Percentile among Gas Giant cohort

Radius 13.100 R⊕ · percentile 46 / cohort 1771

Mass 982.090 M⊕ · percentile 66 / cohort 1747

Orbital period 1,193.30 d · percentile 80 / cohort 1533

Distance 75.12 pc · percentile 29 / cohort 1759

ESI 0.400 · percentile 86 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,193.300 days

Semi-major axis

2.4820 AU

Eccentricity

0.190

Inclination

70.00 °

Year Length

A year here lasts about 3.27 Earth years on a mildly elliptical path at a mean orbital distance of 2.4820 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.400

0 = alien, 1 = Earth-identical

Detection Signatures

Radial velocity

Stellar wobble has been measured spectroscopically.

Astrometry

Positional wobble of the host star was measured.

Discovery Paper

Primary reference

Ottoni et al. 2022

Instrument

CORALIE Spectrograph

Publication

2022-01

Observation locale

Ground

Discovery cohort

Planets confirmed in 2022 at La Silla Observatory (12 shown).

TOI-500 c · Sub-Neptune pi Men d · Sub-Neptune TOI-500 e · Sub-Neptune CoRoT-7 d · Neptune-like TOI-500 d · Neptune-like HD 103891 b · Gas Giant HD 114082 b · Gas Giant HD 64121 b · Gas Giant HD 22532 b · Gas Giant HD 29399 b · Gas Giant iot Dra c · Gas Giant HD 105779 b · Gas Giant

Host System: HD 69123

Spectral Class

K-type orange

Effective Temperature

4,842 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

7.720 R☉

Stellar Mass

1.680 M☉

Metallicity [Fe/H]

0.05

Distance

75.12 parsec

Light-years 245.00 ly

V-band magnitude

5.77 mag

Voyager-speed travel 4,320,493 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

13.284 mas

Total Proper Motion

51.194 mas/yr

PM Right Ascension

-46.40 mas/yr

PM Declination

21.63 mas/yr

Galactic Cartesian (pc)

x = -0.450 · y = 0.679 · z = -0.581

Equatorial (J2000)

RA 123.55499° · Dec -35.48992°

Galactic ℓ, b

253.317° · -0.495°

Ecliptic λ, β

138.968° · -53.375°

HTM-20 index

-713210259

Similar Worlds

HD 4732 c

Gas Giant · K-type orange

Radius 13.10 R⊕ · 178.7 ly

HD 37605 c

Gas Giant · K-type orange

Radius 13.10 R⊕ · 152.6 ly

HD 102843 b

Gas Giant · K-type orange

Radius 13.10 R⊕ · 204.7 ly

HD 142245 b

Gas Giant · K-type orange

Radius 13.10 R⊕ · 317.1 ly

HD 112570 b

Gas Giant · K-type orange

Radius 13.10 R⊕ · 330.0 ly

KOINTREAU-3 b

Gas Giant · K-type orange

Radius 13.10 R⊕ · 458.5 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries La Silla Observatory Mission K-type orange Hosts