Key parameters at a glance

A radius of 13.70 Earth radii
A mass of 400.47 Earth masses
Surface gravity around 2.13 g
An orbital period of 1,576.000 days
Semi-major axis 2.7400 AU
Distance from Earth 320.16 light-years
Earth Similarity Index 0.327
Travel time at Voyager 1 speed 5,645,980 years

HD 94834 b Planet Profile

Physical Specs

Radius

13.70 R⊕

Radius (Jupiter)

1.220 R♃

Mass

400.47 M⊕

Mass (Jupiter)

1.260 M♃

Density

0.86 g/cm³

Surface Gravity

2.13 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.327

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Radial Velocity

Facility W. M. Keck Observatory

Telescope 10 m Keck I 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 94834 b	Jupiter
Radius (R⊕)	1.00	13.70	11.21
Mass (M⊕)	1.00	400.47	317.83
Density (g/cm³)	5.51	0.86	1.33
Surface Gravity (g)	1.00	2.13	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	400.466 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 94834

HIP

HIP 53545

TIC

TIC 138764379

Gaia DR2

Gaia DR2 3995918691799173248

Gaia DR3

Gaia DR3 3995918691799173248

System

HD 94834

Percentile among Gas Giant cohort

Radius 13.700 R⊕ · percentile 66 / cohort 1771

Mass 400.466 M⊕ · percentile 42 / cohort 1747

Orbital period 1,576.00 d · percentile 82 / cohort 1533

Distance 98.16 pc · percentile 34 / cohort 1759

ESI 0.327 · percentile 65 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,576.000 days

Semi-major axis

2.7400 AU

Eccentricity

0.140

Inclination

— °

Year Length

A year here lasts about 4.31 Earth years on a mildly elliptical path at a mean orbital distance of 2.7400 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.327

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Luhn et al. 2019

Instrument

HIRES Spectrometer

Publication

2019-04

Observation locale

Ground

Discovery cohort

Planets confirmed in 2018 at W. M. Keck Observatory (12 shown).

HD 75784 c · Gas Giant HD 99706 c · Gas Giant HD 148164 c · Gas Giant HD 55696 b · Gas Giant HD 95089 c · Gas Giant HD 13167 b · Gas Giant HD 18015 b · Gas Giant HAT-P-11 c · Gas Giant HD 156279 c · Gas Giant HD 98736 b · Gas Giant HD 180053 b · Gas Giant HD 114783 c · Gas Giant

Host System: HD 94834

Spectral Class

K-type orange

Effective Temperature

4,798 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

4.200 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

0.12

Extended Stellar Properties

Surface gravity (log g)

3.220 dex

Systemic radial velocity

2.91 km/s

Metallicity ratio

[M/H]

Distance

98.16 parsec

Light-years 320.16 ly

V-band magnitude

7.60 mag

Voyager-speed travel 5,645,980 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

10.159 mas

Total Proper Motion

80.591 mas/yr

PM Right Ascension

-72.06 mas/yr

PM Declination

36.10 mas/yr

Galactic Cartesian (pc)

x = -0.879 · y = 0.247 · z = 0.409

Equatorial (J2000)

RA 164.31264° · Dec 24.14294°

Galactic ℓ, b

213.128° · 64.146°

Ecliptic λ, β

156.109° · 16.088°

HTM-20 index

774885023

Similar Worlds

BD+15 2940 b

Gas Giant · K-type orange

Radius 13.70 R⊕ · 1,390.8 ly

HD 116029 c

Gas Giant · K-type orange

Radius 13.70 R⊕ · 402.0 ly

HD 114783 b

Gas Giant · K-type orange

Radius 13.70 R⊕ · 68.7 ly

HD 208897 b

Gas Giant · K-type orange

Radius 13.70 R⊕ · 220.1 ly

HD 100508 b

Gas Giant · K-type orange

Radius 13.70 R⊕ · 106.8 ly

HD 5608 b

Gas Giant · K-type orange

Radius 13.70 R⊕ · 189.5 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries W. M. Keck Observatory Mission K-type orange Hosts