Key parameters at a glance

A radius of 12.90 Earth radii
A mass of 1,589.15 Earth masses
Surface gravity around 9.55 g
An orbital period of 613.200 days
Semi-major axis 1.7000 AU
Distance from Earth 1,054.58 light-years
Earth Similarity Index 0.429
Travel time at Voyager 1 speed 18,597,456 years

HD 112640 b Planet Profile

Physical Specs

Radius

12.90 R⊕

Radius (Jupiter)

1.150 R♃

Mass

1,589.15 M⊕

Mass (Jupiter)

5.000 M♃

Density

4.07 g/cm³

Surface Gravity

9.55 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.429

HZ Position Unknown

Controversial No

Discovery

Year 2020

Method Radial Velocity

Facility Bohyunsan Optical Astronomical Observatory

Telescope 1.8 m Telescope

Size rank in cohort

Rank by radius

#1011of 1771

top 57.0%

This planet

12.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 55696 b 12.90 R⊕ HD 24040 b 12.90 R⊕ BD-210397 c 12.90 R⊕

Metric	Earth	HD 112640 b	Jupiter
Radius (R⊕)	1.00	12.90	11.21
Mass (M⊕)	1.00	1,589.15	317.83
Density (g/cm³)	5.51	4.07	1.33
Surface Gravity (g)	1.00	9.55	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	1,589.150 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 112640

HIP

HIP 63203

TIC

TIC 459217467

Gaia DR2

Gaia DR2 1679187115856566528

Gaia DR3

Gaia DR3 1679187115856566528

System

HD 112640

Percentile among Gas Giant cohort

Radius 12.900 R⊕ · percentile 41 / cohort 1771

Mass 1,589.150 M⊕ · percentile 75 / cohort 1747

Orbital period 613.20 d · percentile 71 / cohort 1533

Distance 323.34 pc · percentile 62 / cohort 1759

ESI 0.429 · percentile 94 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

613.200 days

Semi-major axis

1.7000 AU

Eccentricity

0.240

Inclination

— °

Year Length

A year here lasts about 1.68 Earth years on a mildly elliptical path at a mean orbital distance of 1.7000 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.429

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Lee et al. 2020

Instrument

BOES Echelle Spectrograph

Publication

2020-02

Observation locale

Ground

Discovery cohort

Planets confirmed in 2020 at Bohyunsan Optical Astronomical Observatory (2 shown).

HD 60292 b · Gas Giant HD 81817 b · Gas Giant

Host System: HD 112640

Spectral Class

K-type orange

Effective Temperature

4,155 K — cooler than the Sun (5,778 K)

Estimated Age

1.60 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

39.000 R☉

Stellar Mass

1.800 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

1.700 dex

Systemic radial velocity

-12.36 km/s

Rotational v·sin i

3.60 km/s

Rotation period

545.00 days

Metallicity ratio

[Fe/H]

Distance

323.34 parsec

Light-years 1,054.58 ly

V-band magnitude

6.54 mag

Voyager-speed travel 18,597,456 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

3.064 mas

Total Proper Motion

22.534 mas/yr

PM Right Ascension

-19.43 mas/yr

PM Declination

11.41 mas/yr

Galactic Cartesian (pc)

x = -0.375 · y = -0.095 · z = 0.922

Equatorial (J2000)

RA 194.24152° · Dec 67.24291°

Galactic ℓ, b

122.102° · 49.876°

Ecliptic λ, β

143.293° · 62.118°

HTM-20 index

2079214442

Similar Worlds

HIP 66074 b

Gas Giant · K-type orange

Radius 12.90 R⊕ · 115.6 ly

HIP 70849 b

Gas Giant · K-type orange

Radius 12.90 R⊕ · 78.5 ly

HD 111591 b

Gas Giant · K-type orange

Radius 12.90 R⊕ · 372.4 ly

HD 102272 b

Gas Giant · K-type orange

Radius 12.90 R⊕ · 1,132.1 ly

GJ 86 b

Gas Giant · K-type orange

Radius 12.90 R⊕ · 35.2 ly

BD-210397 c

Gas Giant · K-type orange

Radius 12.90 R⊕ · 77.4 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Bohyunsan Optical Astronomical Observatory Mission K-type orange Hosts