Key parameters at a glance

A radius of 13.10 Earth radii
A mass of 113.90 Earth masses
Surface gravity around 0.66 g
An orbital period of 3,090.942 days
Semi-major axis 4.0740 AU
Distance from Earth 204.69 light-years
Earth Similarity Index 0.255
Travel time at Voyager 1 speed 3,609,690 years

HD 102843 b Planet Profile

Physical Specs

Radius

13.10 R⊕

Radius (Jupiter)

1.170 R♃

Mass

113.90 M⊕

Mass (Jupiter)

0.358 M♃

Density

0.28 g/cm³

Surface Gravity

0.66 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.255

HZ Position Unknown

Controversial No

Discovery

Year 2019

Method Radial Velocity

Facility Las Campanas Observatory

Telescope 6.5 m Magellan II Clay 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 102843 b	Jupiter
Radius (R⊕)	1.00	13.10	11.21
Mass (M⊕)	1.00	113.90	317.83
Density (g/cm³)	5.51	0.28	1.33
Surface Gravity (g)	1.00	0.66	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	113.900 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 102843

HIP

HIP 57735

TIC

TIC 78290210

Gaia DR2

Gaia DR2 3794501355731126016

Gaia DR3

Gaia DR3 3794501355731126016

System

HD 102843

Percentile among Gas Giant cohort

Radius 13.100 R⊕ · percentile 46 / cohort 1771

Mass 113.900 M⊕ · percentile 7 / cohort 1747

Orbital period 3,090.94 d · percentile 89 / cohort 1533

Distance 62.76 pc · percentile 26 / cohort 1759

ESI 0.255 · percentile 46 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3,090.942 days

Semi-major axis

4.0740 AU

Eccentricity

0.110

Inclination

— °

Year Length

A year here lasts about 8.46 Earth years on a mildly elliptical path at a mean orbital distance of 4.0740 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.255

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Feng et al. 2019

Instrument

Carnegie Planet Finder Spectrograph

Publication

2019-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at Las Campanas Observatory (12 shown).

HD 39855 b · Sub-Neptune HIP 54373 b · Sub-Neptune HD 103949 b · Sub-Neptune HD 24085 b · Sub-Neptune HIP 54373 c · Sub-Neptune HIP 35173 b · Sub-Neptune HD 211970 b · Sub-Neptune HD 64114 b · Neptune-like HIP 71135 b · Neptune-like HD 206255 b · Neptune-like HD 21411 b · Neptune-like HD 8326 b · Neptune-like

Host System: HD 102843

Spectral Class

K-type orange

Effective Temperature

5,436 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.961 R☉

Stellar Mass

0.950 M☉

Metallicity [Fe/H]

0.16

Extended Stellar Properties

Surface gravity (log g)

4.459 dex

Stellar density

1.557 g/cm³

Systemic radial velocity

21.70 km/s

Metallicity ratio

[M/H]

Distance

62.76 parsec

Light-years 204.69 ly

V-band magnitude

9.26 mag

Voyager-speed travel 3,609,690 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

15.906 mas

Total Proper Motion

406.321 mas/yr

PM Right Ascension

-404.67 mas/yr

PM Declination

36.57 mas/yr

Galactic Cartesian (pc)

x = -0.999 · y = 0.042 · z = -0.022

Equatorial (J2000)

RA 177.58547° · Dec -1.25230°

Galactic ℓ, b

273.097° · 58.036°

Ecliptic λ, β

178.279° · -2.109°

HTM-20 index

-439519072

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 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

HD 69123 b

Gas Giant · K-type orange

Radius 13.10 R⊕ · 245.0 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Las Campanas Observatory Mission K-type orange Hosts