Key parameters at a glance

A radius of 13.10 Earth radii
A mass of 1,112.40 Earth masses
Surface gravity around 6.48 g
An orbital period of 17,000.000 days
Semi-major axis 13.0000 AU
Distance from Earth 210.22 light-years
Earth Similarity Index 0.407
Travel time at Voyager 1 speed 3,707,165 years

HD 213472 b Planet Profile

Physical Specs

Radius

13.10 R⊕

Radius (Jupiter)

1.170 R♃

Mass

1,112.40 M⊕

Mass (Jupiter)

3.500 M♃

Density

2.72 g/cm³

Surface Gravity

6.48 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.407

HZ Position Unknown

Controversial No

Discovery

Year 2021

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	HD 213472 b	Jupiter
Radius (R⊕)	1.00	13.10	11.21
Mass (M⊕)	1.00	1,112.40	317.83
Density (g/cm³)	5.51	2.72	1.33
Surface Gravity (g)	1.00	6.48	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	1,112.399 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 213472

HIP

HIP 111136

TIC

TIC 120601788

Gaia DR2

Gaia DR2 1909401760972212224

Gaia DR3

Gaia DR3 1909401760972212224

System

HD 213472

Percentile among Gas Giant cohort

Radius 13.100 R⊕ · percentile 46 / cohort 1771

Mass 1,112.399 M⊕ · percentile 69 / cohort 1747

Orbital period 17,000.00 d · percentile 97 / cohort 1533

Distance 64.45 pc · percentile 27 / cohort 1759

ESI 0.407 · percentile 88 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

17,000.000 days

Semi-major axis

13.0000 AU

Eccentricity

0.530

Inclination

— °

Year Length

A year here lasts about 46.54 Earth years on a highly eccentric trajectory at a mean orbital distance of 13.0000 AU.

Extended Orbital Architecture

RV semi-amplitude (K)

31.100 m/s

Transit mid-time (BJD)

2,459,580.0000

Long. of periastron (ω)

37.24°

Angular separation (arcsec)

202.00000

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.407

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Rosenthal et al. 2021

Instrument

Multiple Instruments

Publication

2021-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2021 at Multiple Observatories (12 shown).

L 98-59 e · Super-Earth GJ 393 b · Rocky Terrestrial HD 168009 b · Sub-Neptune HD 164922 e · Sub-Neptune HD 95735 c · Sub-Neptune HD 141004 b · Sub-Neptune HD 107148 c · Neptune-like TOI-178 f · Sub-Neptune TYC 0434-04538-1 b · Gas Giant HIP 56640 b · Gas Giant HD 137496 c · Gas Giant HD 156668 c · Neptune-like

Host System: HD 213472

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,730 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.434 R☉

Stellar Mass

1.048 M☉

Metallicity [Fe/H]

0.12

Extended Stellar Properties

Surface gravity (log g)

4.145 dex

Stellar density

0.556 g/cm³

Metallicity ratio

[Fe/H]

Distance

64.45 parsec

Light-years 210.22 ly

V-band magnitude

8.17 mag

Voyager-speed travel 3,707,165 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

15.486 mas

Total Proper Motion

219.733 mas/yr

PM Right Ascension

-216.05 mas/yr

PM Declination

40.07 mas/yr

Galactic Cartesian (pc)

x = 0.701 · y = -0.287 · z = 0.652

Equatorial (J2000)

RA 337.70700° · Dec 40.72223°

Galactic ℓ, b

96.114° · -14.715°

Ecliptic λ, β

359.648° · 45.473°

HTM-20 index

-1619770370