Key parameters at a glance

A radius of 11.21 Earth radii
A mass of 7,786.50 Earth masses
Surface gravity around 61.97 g
Semi-major axis 52.0000 AU
Equilibrium temperature 1,600 K (1327 °C)
Distance from Earth 110.33 light-years
Earth Similarity Index 0.068
Travel time at Voyager 1 speed 1,945,711 years

2MASS J01225093-2439505 b Planet Profile

Physical Specs

Radius

11.21 R⊕

Radius (Jupiter)

1.000 R♃

Mass

7,786.50 M⊕

Mass (Jupiter)

24.500 M♃

Density

30.40 g/cm³

Surface Gravity

61.97 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.068

HZ Position Unknown

Controversial No

Discovery

Year 2013

Method Imaging

Facility W. M. Keck Observatory

Telescope 10 m Keck II Telescope

Size rank in cohort

Rank by radius

#1629of 1771

top 91.9%

This planet

11.21R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WASP-34 b 11.21 R⊕ K2-232 b 11.21 R⊕ WASP-162 b 11.21 R⊕

Metric	Earth	2MASS J01225093-2439505 b	Jupiter
Radius (R⊕)	1.00	11.21	11.21
Mass (M⊕)	1.00	7,786.50	317.83
Density (g/cm³)	5.51	30.40	1.33
Surface Gravity (g)	1.00	61.97	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	7,786.500 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 11614485

Gaia DR2

Gaia DR2 5040416186560252416

Gaia DR3

Gaia DR3 5040416186560252416

System

2MASS J01225093-2439505

Percentile among Gas Giant cohort

Radius 11.209 R⊕ · percentile 8 / cohort 1771

Mass 7,786.500 M⊕ · percentile 99 / cohort 1747

Distance 33.83 pc · percentile 9 / cohort 1759

ESI 0.068 · percentile 12 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

52.0000 AU

Eccentricity

—

Inclination

— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

1,600K

(1327 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.068

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Bowler et al. 2013

Instrument

NIRC2 Camera

Publication

2013-09

Observation locale

Ground

Discovery cohort

Planets confirmed in 2013 at W. M. Keck Observatory (2 shown).

ROXs 12 b · Gas Giant Kepler-68 d · Gas Giant

Host System: 2MASS J01225093-2439505

Spectral Class

M-type red dwarf

Effective Temperature

3,530 K — cooler than the Sun (5,778 K)

Estimated Age

0.12 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.366 R☉

Stellar Mass

0.400 M☉

Metallicity [Fe/H]

—

Extended Stellar Properties

Surface gravity (log g)

4.858 dex

Stellar density

10.119 g/cm³

Systemic radial velocity

9.60 km/s

Distance

33.83 parsec

Light-years 110.33 ly

V-band magnitude

14.24 mag

Voyager-speed travel 1,945,711 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

29.533 mas

Total Proper Motion

172.443 mas/yr

PM Right Ascension

120.46 mas/yr

PM Declination

-123.40 mas/yr

Galactic Cartesian (pc)

x = 0.850 · y = 0.321 · z = -0.417

Equatorial (J2000)

RA 20.71280° · Dec -24.66461°

Galactic ℓ, b

195.454° · -82.520°

Ecliptic λ, β

8.619° · -30.712°

HTM-20 index

1280628573

Similar Worlds

HATS-6 b

Gas Giant · M-type red dwarf

Radius 11.19 R⊕ · 552.2 ly

TOI-6383 A b

Gas Giant · M-type red dwarf

Radius 11.29 R⊕ · 558.8 ly

TOI-3714 b

Gas Giant · M-type red dwarf

Radius 11.32 R⊕ · 367.6 ly

TOI-1899 b

Gas Giant · M-type red dwarf

Radius 11.10 R⊕ · 418.9 ly

TOI-5007 b

Gas Giant · M-type red dwarf

Radius 11.07 R⊕ · 663.2 ly

TOI-5916 b

Gas Giant · M-type red dwarf

Radius 11.35 R⊕ · 651.4 ly

Explore Related Categories

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