Key parameters at a glance

A radius of 13.70 Earth radii
A mass of 384.57 Earth masses
Surface gravity around 2.05 g
An orbital period of 2.197 days
Semi-major axis 0.0379 AU
Distance from Earth 152.57 light-years
Earth Similarity Index 0.324
Travel time at Voyager 1 speed 2,690,610 years

HD 143105 b Planet Profile

Physical Specs

Radius

13.70 R⊕

Radius (Jupiter)

1.220 R♃

Mass

384.57 M⊕

Mass (Jupiter)

1.210 M♃

Density

0.82 g/cm³

Surface Gravity

2.05 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.324

HZ Position Unknown

Controversial No

Discovery

Year 2016

Method Radial Velocity

Facility Haute-Provence Observatory

Telescope 1.93 m Telescope

Size rank in cohort

Rank by radius

#554of 1771

top 31.2%

This planet

13.70R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 148164 b 13.70 R⊕ HD 114783 b 13.70 R⊕ HD 159243 b 13.70 R⊕

Metric	Earth	HD 143105 b	Jupiter
Radius (R⊕)	1.00	13.70	11.21
Mass (M⊕)	1.00	384.57	317.83
Density (g/cm³)	5.51	0.82	1.33
Surface Gravity (g)	1.00	2.05	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	384.574 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 143105

HIP

HIP 77838

TIC

TIC 272783172

Gaia DR2

Gaia DR2 1646538011423566464

Gaia DR3

Gaia DR3 1646538011423566464

System

HD 143105

Percentile among Gas Giant cohort

Radius 13.700 R⊕ · percentile 66 / cohort 1771

Mass 384.574 M⊕ · percentile 41 / cohort 1747

Orbital period 2.20 d · percentile 8 / cohort 1533

Distance 46.78 pc · percentile 17 / cohort 1759

ESI 0.324 · percentile 64 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

2.197 days

Semi-major axis

0.0379 AU

Eccentricity

0.070

Inclination

— °

Year Length

A year here lasts approximately 2.20 Earth days (0.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0379 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.324

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

H Eacute Brard et al. 2016

Instrument

SOPHIE Spectrograph

Publication

2016-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2016 at Haute-Provence Observatory (10 shown).

HD 35759 b · Gas Giant HD 220842 b · Gas Giant HD 12484 b · Gas Giant HD 191806 b · Gas Giant HIP 109600 b · Gas Giant HD 221585 b · Gas Giant HIP 109384 b · Gas Giant HD 214823 b · Gas Giant HIP 65407 c · Gas Giant HIP 65407 b · Gas Giant

Host System: HD 143105

Spectral Class

F-type yellow-white

Effective Temperature

6,380 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.647 R☉

Stellar Mass

1.510 M☉

Metallicity [Fe/H]

0.15

Extended Stellar Properties

Surface gravity (log g)

4.370 dex

Stellar density

0.411 g/cm³

Systemic radial velocity

15.94 km/s

Rotational v·sin i

9.10 km/s

Metallicity ratio

[Fe/H]

Distance

46.78 parsec

Light-years 152.57 ly

V-band magnitude

6.77 mag

Voyager-speed travel 2,690,610 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

21.348 mas

Total Proper Motion

31.771 mas/yr

PM Right Ascension

2.20 mas/yr

PM Declination

-31.70 mas/yr

Galactic Cartesian (pc)

x = -0.190 · y = -0.309 · z = 0.932

Equatorial (J2000)

RA 238.40235° · Dec 68.71998°

Galactic ℓ, b

102.975° · 40.626°

Ecliptic λ, β

155.401° · 77.929°

HTM-20 index

254267450