Key parameters at a glance

A radius of 12.60 Earth radii
A mass of 2,606.10 Earth masses
Surface gravity around 16.42 g
An orbital period of 184.200 days
Semi-major axis 0.8100 AU
Distance from Earth 256.48 light-years
Earth Similarity Index 0.411
Travel time at Voyager 1 speed 4,523,075 years

HIP 105854 b Planet Profile

Physical Specs

Radius

12.60 R⊕

Radius (Jupiter)

1.120 R♃

Mass

2,606.10 M⊕

Mass (Jupiter)

8.200 M♃

Density

7.16 g/cm³

Surface Gravity

16.42 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.411

HZ Position Unknown

Controversial No

Discovery

Year 2014

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1179of 1771

top 66.5%

This planet

12.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-419 c 12.60 R⊕ 2MASS J04414489+2301513 b 12.60 R⊕ HD 47536 b 12.60 R⊕

Metric	Earth	HIP 105854 b	Jupiter
Radius (R⊕)	1.00	12.60	11.21
Mass (M⊕)	1.00	2,606.10	317.83
Density (g/cm³)	5.51	7.16	1.33
Surface Gravity (g)	1.00	16.42	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	2,606.100 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 203949

HIP

HIP 105854

TIC

TIC 129649472

Gaia DR2

Gaia DR2 6583094222249556224

Gaia DR3

Gaia DR3 6583094222249556224

System

HIP 105854

Percentile among Gas Giant cohort

Radius 12.600 R⊕ · percentile 31 / cohort 1771

Mass 2,606.100 M⊕ · percentile 84 / cohort 1747

Orbital period 184.20 d · percentile 57 / cohort 1533

Distance 78.64 pc · percentile 30 / cohort 1759

ESI 0.411 · percentile 88 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

184.200 days

Semi-major axis

0.8100 AU

Eccentricity

0.020

Inclination

— °

Year Length

A year here lasts approximately 184.20 Earth days (50.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.8100 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.411

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Jones et al. 2014

Instrument

Multiple Instruments

Publication

2014-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2014 at Multiple Observatories (12 shown).

GJ 682 b · Super-Earth GJ 180 c · Sub-Neptune GJ 180 b · Sub-Neptune GJ 682 c · Sub-Neptune GJ 160.2 b · Sub-Neptune GJ 422 b · Sub-Neptune GJ 27.1 b · Sub-Neptune GJ 433 c · Neptune-like TYC 1422-614-1 c · Gas Giant TYC 1422-614-1 b · Gas Giant HD 141399 c · Gas Giant HD 141399 d · Gas Giant

Host System: HIP 105854

Spectral Class

K-type orange

Effective Temperature

4,780 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

10.305 R☉

Stellar Mass

2.100 M☉

Metallicity [Fe/H]

0.31

Extended Stellar Properties

Surface gravity (log g)

2.940 dex

Systemic radial velocity

-83.50 km/s

Metallicity ratio

[Fe/H]

Distance

78.64 parsec

Light-years 256.48 ly

V-band magnitude

5.64 mag

Voyager-speed travel 4,523,075 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

12.690 mas

Total Proper Motion

168.620 mas/yr

PM Right Ascension

168.27 mas/yr

PM Declination

-10.81 mas/yr

Galactic Cartesian (pc)

x = 0.619 · y = -0.491 · z = -0.613

Equatorial (J2000)

RA 321.59623° · Dec -37.82948°

Galactic ℓ, b

5.450° · -46.015°

Ecliptic λ, β

311.720° · -21.564°

HTM-20 index

-263640126

Similar Worlds

4 UMa b

Gas Giant · K-type orange

Radius 12.60 R⊕ · 239.6 ly

HD 47536 b

Gas Giant · K-type orange

Radius 12.60 R⊕ · 399.7 ly

HD 19615 b

Gas Giant · K-type orange

Radius 12.60 R⊕ · 864.8 ly

HIP 8541 b

Gas Giant · K-type orange

Radius 12.60 R⊕ · 505.9 ly

HIP 35965 b

Gas Giant · K-type orange

Radius 12.60 R⊕ · 163.6 ly

HD 203387 c

Gas Giant · K-type orange

Radius 12.60 R⊕ · 201.4 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Multiple Observatories Mission K-type orange Hosts