Key parameters at a glance

A radius of 12.40 Earth radii
A mass of 3,813.94 Earth masses
Surface gravity around 24.80 g
Semi-major axis 7,493.0000 AU
Equilibrium temperature 1,616 K (1343 °C)
Distance from Earth 111.27 light-years
Earth Similarity Index 0.087
Travel time at Voyager 1 speed 1,962,236 years

2MASS J21252752-8138278 b Planet Profile

Physical Specs

Radius

12.40 R⊕

Radius (Jupiter)

1.100 R♃

Mass

3,813.94 M⊕

Mass (Jupiter)

12.000 M♃

Density

11.00 g/cm³

Surface Gravity

24.80 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.087

HZ Position Unknown

Controversial No

Discovery

Year 2024

Method Imaging

Facility European Space Agency (ESA) Gaia Satellite

Telescope 1.45 m x 0.5 m Telescope

Size rank in cohort

Rank by radius

#1298of 1771

top 73.2%

This planet

12.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 110014 b 12.40 R⊕ CFBDSIR J145829+101343 b 12.40 R⊕ MOA-2010-BLG-073L b 12.40 R⊕

Metric	Earth	2MASS J21252752-8138278 b	Jupiter
Radius (R⊕)	1.00	12.40	11.21
Mass (M⊕)	1.00	3,813.94	317.83
Density (g/cm³)	5.51	11.00	1.33
Surface Gravity (g)	1.00	24.80	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	3,813.941 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 273305007

Gaia DR2

Gaia DR2 6348514275456913792

Gaia DR3

Gaia DR3 6348514275456913792

System

2MASS J21252752-8138278

Percentile among Gas Giant cohort

Radius 12.400 R⊕ · percentile 25 / cohort 1771

Mass 3,813.941 M⊕ · percentile 90 / cohort 1747

Distance 34.12 pc · percentile 10 / cohort 1759

ESI 0.087 · percentile 21 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

7,493.0000 AU

Eccentricity

—

Inclination

— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

1,616K

(1343 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.087

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Michel & Mugrauer 2024

Instrument

Gaia CCD array

Publication

2024-01

Observation locale

Space

Discovery cohort

Planets confirmed in 2024 at European Space Agency (ESA) Gaia Satellite (7 shown).

Gaia22dkvL b · Gas Giant G 196-3 b · Gas Giant 2MASS J03590986+2009361 b · Gas Giant 2MASS J11550485-7919108 b · Gas Giant HIP 77900 b · Gas Giant ITG 15 b · Gas Giant 2MASS J11011926-7732383 b · Gas Giant

Host System: 2MASS J21252752-8138278

Spectral Class

M-type red dwarf

Effective Temperature

3,592 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.673 R☉

Stellar Mass

0.644 M☉

Metallicity [Fe/H]

—

Distance

34.12 parsec

Light-years 111.27 ly

V-band magnitude

11.80 mag

Voyager-speed travel 1,962,236 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

29.284 mas

Total Proper Motion

123.229 mas/yr

PM Right Ascension

59.84 mas/yr

PM Declination

-107.72 mas/yr

Galactic Cartesian (pc)

x = 0.114 · y = -0.091 · z = -0.989

Equatorial (J2000)

RA 321.36630° · Dec -81.64149°

Galactic ℓ, b

310.651° · -32.120°

Ecliptic λ, β

283.391° · -60.649°

HTM-20 index

-1894309671

Similar Worlds

DE CVn b

Gas Giant · M-type red dwarf

Radius 12.40 R⊕ · 99.6 ly

KOINTREAU-1 b

Gas Giant · M-type red dwarf

Radius 12.40 R⊕ · 517.3 ly

2MASS J0249-0557 c

Gas Giant · M-type red dwarf

Radius 12.40 R⊕ · 215.5 ly

COCONUTS-2 b

Gas Giant · M-type red dwarf

Radius 12.44 R⊕ · 35.5 ly

USco CTIO 108 b

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 469.7 ly

USco1556 b

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 458.7 ly

Explore Related Categories

Gas Giant Planets Imaging Discoveries European Space Agency (ESA) Gaia Satellite Mission M-type red dwarf Hosts