Key parameters at a glance

A radius of 2.61 Earth radii
A mass of 8.40 Earth masses
Surface gravity around 1.24 g
An orbital period of 54.770 days
Semi-major axis 0.2621 AU
Equilibrium temperature 440 K (167 °C)
Distance from Earth 104.89 light-years
Earth Similarity Index 0.535
Travel time at Voyager 1 speed 1,849,680 years

Context from the literature

HD 110067 is a star with six known sub-Neptune exoplanets with radii ranging from 1.94 R🜨 to 2.85 R🜨. The planets orbit the host star in a rhythmic orbital resonance. The star, and related planetary system, is located 105 light-years away in the constellation Coma Berenices.

Excerpted from Wikipedia · full article

5 siblings around HD 110067

HD 110067 g shares its host star with 5 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
HD 110067 b	Sub-Neptune	2.20	5.69	9.114	800	2023
HD 110067 c	Sub-Neptune	2.39	6.30	13.674	699	2023
HD 110067 d	Sub-Neptune	2.85	8.52	20.520	602	2023
HD 110067 e	Super-Earth	1.94	3.90	30.793	533	2023
HD 110067 f	Sub-Neptune	2.60	5.04	41.059	489	2023
HD 110067 g this	Sub-Neptune	2.61	8.40	54.770	440	2023

HD 110067 g Planet Profile

Physical Specs

Radius

2.61 R⊕

Radius (Jupiter)

0.233 R♃

Mass

8.40 M⊕

Mass (Jupiter)

0.026 M♃

Density

— g/cm³

Surface Gravity

1.24 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.535

HZ Position Unknown

Controversial No

Discovery

Year 2023

Method Transit

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1012of 1978

top 51.1%

This planet

2.61R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

HD 22946 d 2.61 R⊕ Kepler-20 d 2.61 R⊕ K2-207 b 2.61 R⊕

Metric	Earth	HD 110067 g	Jupiter
Radius (R⊕)	1.00	2.61	11.21
Mass (M⊕)	1.00	8.40	317.83
Density (g/cm³)	5.51	—	1.33
Surface Gravity (g)	1.00	1.24	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	8.400 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

HD 110067

TIC

TIC 347332255

Gaia DR2

Gaia DR2 3948424496764080640

Gaia DR3

Gaia DR3 3948424496764080640

System

HD 110067

Percentile among Sub-Neptune cohort

Radius 2.607 R⊕ · percentile 49 / cohort 1978

Mass 8.400 M⊕ · percentile 58 / cohort 1978

Orbital period 54.77 d · percentile 87 / cohort 1946

Distance 32.16 pc · percentile 8 / cohort 1975

ESI 0.535 · percentile 75 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

54.770 days

Semi-major axis

0.2621 AU

Eccentricity

—

Inclination

89.73 °

Year Length

A year here lasts approximately 54.77 Earth days (15.0% of a terrestrial year) at a mean orbital distance of 0.2621 AU.

Transit Fingerprint

Duration

5.666 h

Impact parameter b

0.338

Rp / R★

0.030300

Transit midpoint (BJD)

2,459,656.0921

Extended Orbital Architecture

Planet / star radius ratio

0.030300

Semi-major axis / stellar radius

71.590

Impact parameter (b)

0.338

RV semi-amplitude (K)

1.300 m/s

Transit mid-time (BJD)

2,459,656.0921

Angular separation (arcsec)

8.15000

Eq. Temperature

440K

(167 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.535

0 = alien, 1 = Earth-identical

Insufficient insolation data — the surface is too hot to retain surface water.

Discovery Paper

Primary reference

Luque et al. 2023

Instrument

Multiple Instruments

Publication

2023-11

Observation locale

Multiple Locales

Discovery cohort

Planets confirmed in 2023 at Multiple Observatories (12 shown).

AU Mic d · Rocky Terrestrial DMPP-4 b · Sub-Neptune GJ 806 c · Sub-Neptune HD 110067 f · Sub-Neptune HD 110067 e · Super-Earth TIC 279401253 c · Gas Giant HD 112570 b · Gas Giant HD 110067 d · Sub-Neptune HD 154391 b · Gas Giant HAT-P-2 c · Gas Giant HD 110067 b · Sub-Neptune HD 110067 c · Sub-Neptune

Host System: HD 110067

Spectral Class

K-type orange

Effective Temperature

5,266 K — cooler than the Sun (5,778 K)

Estimated Age

8.10 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.788 R☉

Stellar Mass

0.798 M☉

Metallicity [Fe/H]

-0.20

Extended Stellar Properties

Surface gravity (log g)

4.540 dex

Stellar density

2.678 g/cm³

Rotational v·sin i

2.50 km/s

Metallicity ratio

[Fe/H]

Distance

32.16 parsec

Light-years 104.89 ly

V-band magnitude

8.42 mag

Voyager-speed travel 1,849,680 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

31.067 mas

Total Proper Motion

132.876 mas/yr

PM Right Ascension

-81.96 mas/yr

PM Declination

-104.59 mas/yr

Galactic Cartesian (pc)

x = -0.926 · y = -0.161 · z = 0.342

Equatorial (J2000)

RA 189.83922° · Dec 20.02734°

Galactic ℓ, b

281.013° · 82.380°

Ecliptic λ, β

180.682° · 22.214°

HTM-20 index

325705678

Wikipedia →

Similar Worlds

Kepler-970 b

Sub-Neptune · K-type orange

Radius 2.61 R⊕ · 1,081.4 ly

Kepler-257 b

Sub-Neptune · K-type orange

Radius 2.61 R⊕ · 2,544.9 ly

GJ 143 b

Sub-Neptune · K-type orange

Radius 2.61 R⊕ · 53.2 ly

Kepler-242 b

Sub-Neptune · K-type orange

Radius 2.61 R⊕ · 1,957.7 ly

K2-54 b

Sub-Neptune · K-type orange

Radius 2.61 R⊕ · 570.6 ly

HD 110067 f

Sub-Neptune · K-type orange

Radius 2.60 R⊕ · 104.9 ly

Explore Related Categories

Sub-Neptune Planets Transit Discoveries Multiple Observatories Mission K-type orange Hosts