Key parameters at a glance

A radius of 13.10 Earth radii
A mass of 1,052.01 Earth masses
Surface gravity around 6.13 g
An orbital period of 27,000.000 days
Semi-major axis 18.0000 AU
Equilibrium temperature 171 K (-102 °C)
Distance from Earth 102.61 light-years
Earth Similarity Index 0.336
Travel time at Voyager 1 speed 1,809,544 years

HR 5183 b Planet Profile

Physical Specs

Radius

13.10 R⊕

Radius (Jupiter)

1.170 R♃

Mass

1,052.01 M⊕

Mass (Jupiter)

3.310 M♃

Density

2.57 g/cm³

Surface Gravity

6.13 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.336

HZ Position Unknown

Controversial No

Discovery

Year 2019

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#910of 1771

top 51.3%

This planet

13.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

GJ 3021 b 13.10 R⊕ HD 221287 b 13.10 R⊕ HD 37605 c 13.10 R⊕

Metric	Earth	HR 5183 b	Jupiter
Radius (R⊕)	1.00	13.10	11.21
Mass (M⊕)	1.00	1,052.01	317.83
Density (g/cm³)	5.51	2.57	1.33
Surface Gravity (g)	1.00	6.13	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	1,052.012 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	1,026.591 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 120066

HIP

HIP 67246

TIC

TIC 379117362

Gaia DR2

Gaia DR2 3721126409323324416

Gaia DR3

Gaia DR3 3721126409323324416

System

HR 5183

Percentile among Gas Giant cohort

Radius 13.100 R⊕ · percentile 46 / cohort 1771

Mass 1,052.012 M⊕ · percentile 68 / cohort 1747

Orbital period 27,000.00 d · percentile 99 / cohort 1533

Distance 31.46 pc · percentile 8 / cohort 1759

ESI 0.336 · percentile 67 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

27,000.000 days

Semi-major axis

18.0000 AU

Eccentricity

0.840

Inclination

80.30 °

Year Length

A year here lasts about 73.92 Earth years on a highly eccentric trajectory at a mean orbital distance of 18.0000 AU.

Extended Orbital Architecture

RV semi-amplitude (K)

38.250 m/s

Transit mid-time (BJD)

2,458,960.0000

Long. of periastron (ω)

-20.00°

Angular separation (arcsec)

572.00000

Eq. Temperature

171K

(-102 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.336

0 = alien, 1 = Earth-identical

Insufficient insolation data — surface water would be frozen.

Detection Signatures

Radial velocity

Stellar wobble has been measured spectroscopically.

Astrometry

Positional wobble of the host star was measured.

Discovery Paper

Primary reference

Blunt et al. 2019

Instrument

Multiple Instruments

Publication

2019-11

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at Multiple Observatories (8 shown).

Gl 49 b · Sub-Neptune GJ 357 c · Super-Earth GJ 357 d · Sub-Neptune NSVS 14256825 b · Gas Giant 7 CMa c · Gas Giant HD 213885 c · Neptune-like USco1556 b · Gas Giant USco1621 b · Gas Giant

Host System: HR 5183

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,794 K — hotter than the Sun (5,778 K)

Estimated Age

7.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.530 R☉

Stellar Mass

1.070 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.020 dex

Stellar density

0.431 g/cm³

Systemic radial velocity

-30.42 km/s

Rotational v·sin i

3.00 km/s

Activity index (log R'HK)

-5.150

Metallicity ratio

[Fe/H]

Distance

31.46 parsec

Light-years 102.61 ly

V-band magnitude

6.33 mag

Voyager-speed travel 1,809,544 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

31.757 mas

Total Proper Motion

522.212 mas/yr

PM Right Ascension

-510.45 mas/yr

PM Declination

-110.23 mas/yr

Galactic Cartesian (pc)

x = -0.888 · y = -0.447 · z = 0.111

Equatorial (J2000)

RA 206.73580° · Dec 6.34990°

Galactic ℓ, b

337.843° · 65.388°

Ecliptic λ, β

202.417° · 16.220°

HTM-20 index

-1588818068