Key parameters at a glance

A radius of 12.60 Earth radii
A mass of 2,660.24 Earth masses
Surface gravity around 16.76 g
An orbital period of 572.380 days
Semi-major axis 1.3400 AU
Distance from Earth 137.50 light-years
Earth Similarity Index 0.408
Travel time at Voyager 1 speed 2,424,862 years

HD 222582 b Planet Profile

Physical Specs

Radius

12.60 R⊕

Radius (Jupiter)

1.120 R♃

Mass

2,660.24 M⊕

Mass (Jupiter)

8.370 M♃

Density

7.31 g/cm³

Surface Gravity

16.76 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.408

HZ Position Unknown

Controversial No

Discovery

Year 1999

Method Radial Velocity

Facility W. M. Keck Observatory

Telescope 10 m Keck I Telescope

Size rank in cohort

Rank by radius

#1179of 1771

top 66.5%

This planet

12.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-419 c 12.60 R⊕ 2MASS J04414489+2301513 b 12.60 R⊕ HD 47536 b 12.60 R⊕

Metric	Earth	HD 222582 b	Jupiter
Radius (R⊕)	1.00	12.60	11.21
Mass (M⊕)	1.00	2,660.24	317.83
Density (g/cm³)	5.51	7.31	1.33
Surface Gravity (g)	1.00	16.76	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	2,660.237 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 222582

HIP

HIP 116906

TIC

TIC 9005067

Gaia DR2

Gaia DR2 2440578577126302336

Gaia DR3

Gaia DR3 2440578577126302336

System

HD 222582

Percentile among Gas Giant cohort

Radius 12.600 R⊕ · percentile 31 / cohort 1771

Mass 2,660.237 M⊕ · percentile 84 / cohort 1747

Orbital period 572.38 d · percentile 70 / cohort 1533

Distance 42.16 pc · percentile 15 / cohort 1759

ESI 0.408 · percentile 88 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

572.380 days

Semi-major axis

1.3400 AU

Eccentricity

0.730

Inclination

— °

Year Length

A year here lasts about 1.57 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.3400 AU.

Extended Orbital Architecture

RV semi-amplitude (K)

276.300 m/s

Transit mid-time (BJD)

2,453,054.2000

Long. of periastron (ω)

-40.49°

Angular separation (arcsec)

31.80000

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.408

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Vogt et al. 2000

Instrument

HIRES Spectrometer

Publication

2000-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 1999 at W. M. Keck Observatory (4 shown).

HD 10697 b · Gas Giant HD 177830 b · Gas Giant HD 134987 b · Gas Giant HD 209458 b · Gas Giant

Host System: HD 222582

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,790 K — hotter than the Sun (5,778 K)

Estimated Age

10.24 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.130 R☉

Stellar Mass

1.120 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.380 dex

Stellar density

1.007 g/cm³

Systemic radial velocity

12.09 km/s

Rotational v·sin i

2.30 km/s

Metallicity ratio

[Fe/H]

Distance

42.16 parsec

Light-years 137.50 ly

V-band magnitude

7.68 mag

Voyager-speed travel 2,424,862 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

23.691 mas

Total Proper Motion

183.107 mas/yr

PM Right Ascension

-145.40 mas/yr

PM Declination

-111.30 mas/yr

Galactic Cartesian (pc)

x = 0.991 · y = -0.079 · z = -0.104

Equatorial (J2000)

RA 355.46408° · Dec -5.98624°

Galactic ℓ, b

81.757° · -63.152°

Ecliptic λ, β

353.457° · -3.692°

HTM-20 index

-1959212816

Observation Record

Photometric series

RV measurements

Stellar spectra

Archive notes