Key parameters at a glance

A radius of 13.30 Earth radii
A mass of 697.32 Earth masses
Surface gravity around 3.94 g
An orbital period of 213.720 days
Semi-major axis 0.8430 AU
Distance from Earth 446.97 light-years
Earth Similarity Index 0.374
Travel time at Voyager 1 speed 7,882,385 years

HD 180053 b Planet Profile

Physical Specs

Radius

13.30 R⊕

Radius (Jupiter)

1.190 R♃

Mass

697.32 M⊕

Mass (Jupiter)

2.194 M♃

Density

1.63 g/cm³

Surface Gravity

3.94 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.374

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

#793of 1771

top 44.7%

This planet

13.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 12661 b 13.30 R⊕ HD 129445 b 13.30 R⊕ GJ 876 b 13.30 R⊕

Metric	Earth	HD 180053 b	Jupiter
Radius (R⊕)	1.00	13.30	11.21
Mass (M⊕)	1.00	697.32	317.83
Density (g/cm³)	5.51	1.63	1.33
Surface Gravity (g)	1.00	3.94	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	697.319 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 180053

HIP

HIP 94465

TIC

TIC 29898060

Gaia DR2

Gaia DR2 2050321081068398720

Gaia DR3

Gaia DR3 2050321081068398720

System

HD 180053

Percentile among Gas Giant cohort

Radius 13.300 R⊕ · percentile 53 / cohort 1771

Mass 697.319 M⊕ · percentile 57 / cohort 1747

Orbital period 213.72 d · percentile 58 / cohort 1533

Distance 137.04 pc · percentile 42 / cohort 1759

ESI 0.374 · percentile 77 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

213.720 days

Semi-major axis

0.8430 AU

Eccentricity

0.081

Inclination

— °

Year Length

A year here lasts approximately 213.72 Earth days (58.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.8430 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.374

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 114783 c · Gas Giant HD 72490 b · Gas Giant

Host System: HD 180053

Spectral Class

K-type orange

Effective Temperature

5,131 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

4.060 R☉

Stellar Mass

1.750 M☉

Metallicity [Fe/H]

0.25

Extended Stellar Properties

Surface gravity (log g)

3.540 dex

Systemic radial velocity

-5.72 km/s

Metallicity ratio

[M/H]

Distance

137.04 parsec

Light-years 446.97 ly

V-band magnitude

7.93 mag

Voyager-speed travel 7,882,385 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

7.268 mas

Total Proper Motion

30.579 mas/yr

PM Right Ascension

-10.14 mas/yr

PM Declination

28.85 mas/yr

Galactic Cartesian (pc)

x = 0.259 · y = -0.778 · z = 0.572

Equatorial (J2000)

RA 288.40084° · Dec 34.91467°

Galactic ℓ, b

66.689° · 10.983°

Ecliptic λ, β

298.026° · 56.577°

HTM-20 index

809707120

Similar Worlds

TOI-4010 e

Gas Giant · K-type orange

Radius 13.30 R⊕ · 578.9 ly

HD 94890 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 201.2 ly

NGC 2682 Sand 978 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 2,680.7 ly

HD 12661 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 123.4 ly

HD 108863 b

Gas Giant · K-type orange

Radius 13.30 R⊕ · 537.3 ly

Kepler-432 c

Gas Giant · K-type orange

Radius 13.30 R⊕ · 2,765.9 ly

Explore Related Categories

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