Key parameters at a glance

A radius of 13.50 Earth radii
A mass of 565.74 Earth masses
Surface gravity around 3.10 g
An orbital period of 2,058.000 days
Semi-major axis 2.8270 AU
Distance from Earth 191.59 light-years
Earth Similarity Index 0.355
Travel time at Voyager 1 speed 3,378,699 years

HD 233832 b Planet Profile

Physical Specs

Radius

13.50 R⊕

Radius (Jupiter)

1.200 R♃

Mass

565.74 M⊕

Mass (Jupiter)

1.780 M♃

Density

1.26 g/cm³

Surface Gravity

3.10 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.355

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Radial Velocity

Facility Roque de los Muchachos Observatory

Telescope 3.58 m Telescopio Nazionale Galileo

Size rank in cohort

Rank by radius

#671of 1771

top 37.8%

This planet

13.50R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 45350 b 13.50 R⊕ HD 82943 b 13.50 R⊕ HD 27442 b 13.50 R⊕

Metric	Earth	HD 233832 b	Jupiter
Radius (R⊕)	1.00	13.50	11.21
Mass (M⊕)	1.00	565.74	317.83
Density (g/cm³)	5.51	1.26	1.33
Surface Gravity (g)	1.00	3.10	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	565.737 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 233832

HIP

HIP 55806

TIC

TIC 445811628

Gaia DR2

Gaia DR2 790236569003888000

Gaia DR3

Gaia DR3 790236569006916096

System

HD 233832

Percentile among Gas Giant cohort

Radius 13.500 R⊕ · percentile 59 / cohort 1771

Mass 565.737 M⊕ · percentile 52 / cohort 1747

Orbital period 2,058.00 d · percentile 85 / cohort 1533

Distance 58.74 pc · percentile 24 / cohort 1759

ESI 0.355 · percentile 72 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

2,058.000 days

Semi-major axis

2.8270 AU

Eccentricity

0.359

Inclination

— °

Year Length

A year here lasts about 5.63 Earth years on a highly eccentric trajectory at a mean orbital distance of 2.8270 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.355

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Barbato et al. 2019

Instrument

HARPS-N Spectrograph

Publication

2019-01

Observation locale

Ground

Discovery cohort

Planets confirmed in 2018 at Roque de los Muchachos Observatory (3 shown).

Gl 686 b · Sub-Neptune GJ 15 A c · Neptune-like HD 220197 b · Neptune-like

Host System: HD 233832

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

4,981 K — cooler than the Sun (5,778 K)

Estimated Age

5.42 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.680 R☉

Stellar Mass

0.710 M☉

Metallicity [Fe/H]

-0.66

Extended Stellar Properties

Surface gravity (log g)

4.490 dex

Stellar density

2.872 g/cm³

Systemic radial velocity

-65.61 km/s

Rotational v·sin i

0.80 km/s

Rotation period

41.00 days

Metallicity ratio

[Fe/H]

Distance

58.74 parsec

Light-years 191.59 ly

V-band magnitude

10.15 mag

Voyager-speed travel 3,378,699 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

16.995 mas

Total Proper Motion

489.955 mas/yr

PM Right Ascension

-473.96 mas/yr

PM Declination

124.17 mas/yr

Galactic Cartesian (pc)

x = -0.631 · y = 0.094 · z = 0.770

Equatorial (J2000)

RA 171.51965° · Dec 50.37631°

Galactic ℓ, b

152.167° · 61.629°

Ecliptic λ, β

148.093° · 42.012°

HTM-20 index

1991895207