Key parameters at a glance

A radius of 10.60 Earth radii
A mass of 79.46 Earth masses
Surface gravity around 0.71 g
An orbital period of 70.460 days
Semi-major axis 0.3000 AU
Distance from Earth 97.94 light-years
Earth Similarity Index 0.295
Travel time at Voyager 1 speed 1,727,104 years

HD 101930 b Planet Profile

Physical Specs

Radius

10.60 R⊕

Radius (Jupiter)

0.949 R♃

Mass

79.46 M⊕

Mass (Jupiter)

0.250 M♃

Density

0.37 g/cm³

Surface Gravity

0.71 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.295

HZ Position Unknown

Controversial No

Discovery

Year 2005

Method Radial Velocity

Facility La Silla Observatory

Telescope 3.6 m ESO Telescope

Size rank in cohort

Rank by radius

#1714of 1771

top 96.7%

This planet

10.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

KMT-2021-BLG-1077L c 10.60 R⊕ TOI-5344 b 10.60 R⊕ WASP-45 b 10.60 R⊕

Metric	Earth	HD 101930 b	Jupiter
Radius (R⊕)	1.00	10.60	11.21
Mass (M⊕)	1.00	79.46	317.83
Density (g/cm³)	5.51	0.37	1.33
Surface Gravity (g)	1.00	0.71	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	79.458 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 101930

HIP

HIP 57172

TIC

TIC 267399515

Gaia DR2

Gaia DR2 5341787994441794176

Gaia DR3

Gaia DR3 5341787994441794176

System

HD 101930

Percentile among Gas Giant cohort

Radius 10.600 R⊕ · percentile 3 / cohort 1771

Mass 79.458 M⊕ · percentile 2 / cohort 1747

Orbital period 70.46 d · percentile 52 / cohort 1533

Distance 30.03 pc · percentile 7 / cohort 1759

ESI 0.295 · percentile 57 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

70.460 days

Semi-major axis

0.3000 AU

Eccentricity

0.110

Inclination

— °

Year Length

A year here lasts approximately 70.46 Earth days (19.3% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.3000 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.295

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Lovis et al. 2005

Instrument

HARPS Spectrograph

Publication

2005-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2005 at La Silla Observatory (10 shown).

HD 4308 b · Neptune-like GJ 581 b · Neptune-like HD 11977 b · Gas Giant HD 142022 A b · Gas Giant HD 102117 b · Neptune-like HD 27894 b · Gas Giant HD 212301 b · Gas Giant HD 93083 b · Gas Giant HD 63454 b · Gas Giant HD 2638 b · Gas Giant

Host System: HD 101930

Spectral Class

K-type orange

Effective Temperature

5,108 K — cooler than the Sun (5,778 K)

Estimated Age

1.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.860 R☉

Stellar Mass

0.570 M☉

Metallicity [Fe/H]

0.15

Extended Stellar Properties

Surface gravity (log g)

4.330 dex

Stellar density

1.801 g/cm³

Systemic radial velocity

18.36 km/s

Rotational v·sin i

0.70 km/s

Metallicity ratio

[Fe/H]

Distance

30.03 parsec

Light-years 97.94 ly

V-band magnitude

8.21 mag

Voyager-speed travel 1,727,104 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

33.274 mas

Total Proper Motion

349.396 mas/yr

PM Right Ascension

16.69 mas/yr

PM Declination

349.00 mas/yr

Galactic Cartesian (pc)

x = -0.528 · y = 0.038 · z = -0.848

Equatorial (J2000)

RA 175.87561° · Dec -58.00538°

Galactic ℓ, b

294.010° · 3.685°

Ecliptic λ, β

209.774° · -52.492°

HTM-20 index

489696908

Observation Record

Photometric series

RV measurements

Archive notes

Similar Worlds

TOI-5344 b

Gas Giant · K-type orange

Radius 10.60 R⊕ · 451.3 ly

WASP-45 b

Gas Giant · K-type orange

Radius 10.60 R⊕ · 688.8 ly

HATS-69 b

Gas Giant · K-type orange

Radius 10.59 R⊕ · 1,352.0 ly

K2-114 b

Gas Giant · K-type orange

Radius 10.59 R⊕ · 1,551.7 ly

HAT-P-54 b

Gas Giant · K-type orange

Radius 10.58 R⊕ · 468.5 ly

TOI-3486 b

Gas Giant · K-type orange

Radius 10.57 R⊕ · 504.6 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries La Silla Observatory Mission K-type orange Hosts