Key parameters at a glance

A radius of 13.90 Earth radii
A mass of 270.15 Earth masses
Surface gravity around 1.40 g
An orbital period of 20.653 days
Semi-major axis 0.1512 AU
Distance from Earth 349.68 light-years
Earth Similarity Index 0.295
Travel time at Voyager 1 speed 6,166,693 years

HD 167768 b Planet Profile

Physical Specs

Radius

13.90 R⊕

Radius (Jupiter)

1.240 R♃

Mass

270.15 M⊕

Mass (Jupiter)

0.850 M♃

Density

0.55 g/cm³

Surface Gravity

1.40 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.295

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Okayama Astrophysical Observatory

Telescope 1.88 m Telescope

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 167768 b	Jupiter
Radius (R⊕)	1.00	13.90	11.21
Mass (M⊕)	1.00	270.15	317.83
Density (g/cm³)	5.51	0.55	1.33
Surface Gravity (g)	1.00	1.40	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	270.154 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 167768

TIC

TIC 2382387

Gaia DR2

Gaia DR2 4270573397890617856

Gaia DR3

Gaia DR3 4270573397890617856

System

HD 167768

Percentile among Gas Giant cohort

Radius 13.900 R⊕ · percentile 72 / cohort 1771

Mass 270.154 M⊕ · percentile 29 / cohort 1747

Orbital period 20.65 d · percentile 48 / cohort 1533

Distance 107.21 pc · percentile 36 / cohort 1759

ESI 0.295 · percentile 57 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

20.653 days

Semi-major axis

0.1512 AU

Eccentricity

0.149

Inclination

— °

Year Length

A year here lasts approximately 20.65 Earth days (5.7% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1512 AU.

Extended Orbital Architecture

RV semi-amplitude (K)

61.060 m/s

Transit mid-time (BJD)

2,454,595.4400

Long. of periastron (ω)

58.73°

Angular separation (arcsec)

1.41000

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.295

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Teng et al. 2022

Instrument

HIDES Echelle Spectrograph

Publication

2022-11

Observation locale

Ground

Discovery cohort

Planets confirmed in 2022 at Okayama Astrophysical Observatory (3 shown).

HD 184010 c · Gas Giant HD 184010 b · Gas Giant HD 184010 d · Gas Giant

Host System: HD 167768

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

4,851 K — cooler than the Sun (5,778 K)

Estimated Age

5.31 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

9.700 R☉

Stellar Mass

1.080 M☉

Metallicity [Fe/H]

-0.67

Distance

107.21 parsec

Light-years 349.68 ly

V-band magnitude

5.99 mag

Voyager-speed travel 6,166,693 yr

Multi-band Host Photometry — 7 bands

Astrometric Data

Parallax

9.300 mas

Total Proper Motion

274.628 mas/yr

PM Right Ascension

18.05 mas/yr

PM Declination

-274.03 mas/yr

Galactic Cartesian (pc)

x = 0.074 · y = -0.996 · z = -0.052

Equatorial (J2000)

RA 274.22133° · Dec -3.00858°

Galactic ℓ, b

26.282° · 6.290°

Ecliptic λ, β

274.493° · 20.365°

HTM-20 index

-187631418