Key parameters at a glance

A radius of 12.10 Earth radii
A mass of 6,674.40 Earth masses
Surface gravity around 45.59 g
Semi-major axis 435.0000 AU
Equilibrium temperature 2,601 K (2328 °C)
Distance from Earth 444.78 light-years
Earth Similarity Index 0.041
Travel time at Voyager 1 speed 7,843,676 years

ITG 15 b Planet Profile

Physical Specs

Radius

12.10 R⊕

Radius (Jupiter)

1.080 R♃

Mass

6,674.40 M⊕

Mass (Jupiter)

21.000 M♃

Density

20.70 g/cm³

Surface Gravity

45.59 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.041

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

#1454of 1771

top 82.0%

This planet

12.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 62364 b 12.10 R⊕ HD 106515 A b 12.10 R⊕ BD+20 2457 b 12.10 R⊕

Metric	Earth	ITG 15 b	Jupiter
Radius (R⊕)	1.00	12.10	11.21
Mass (M⊕)	1.00	6,674.40	317.83
Density (g/cm³)	5.51	20.70	1.33
Surface Gravity (g)	1.00	45.59	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	6,674.397 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 150058659

Gaia DR2

Gaia DR2 148400229703257856

Gaia DR3

Gaia DR3 148400229703257856

System

ITG 15

Percentile among Gas Giant cohort

Radius 12.100 R⊕ · percentile 16 / cohort 1771

Mass 6,674.397 M⊕ · percentile 97 / cohort 1747

Distance 136.37 pc · percentile 42 / cohort 1759

ESI 0.041 · percentile 2 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

435.0000 AU

Eccentricity

—

Inclination

— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

2,601K

(2328 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.041

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 2MASS J21252752-8138278 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 2MASS J11011926-7732383 b · Gas Giant

Host System: ITG 15 A

Spectral Class

Unknown

Effective Temperature

—

Estimated Age

—

Stellar Radius

—

Stellar Mass

—

Metallicity [Fe/H]

—

Distance

136.37 parsec

Light-years 444.78 ly

V-band magnitude

— mag

Voyager-speed travel 7,843,676 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

7.307 mas

Total Proper Motion

23.332 mas/yr

PM Right Ascension

7.46 mas/yr

PM Declination

-22.11 mas/yr

Galactic Cartesian (pc)

x = 0.308 · y = 0.844 · z = 0.439

Equatorial (J2000)

RA 69.93704° · Dec 26.03121°

Galactic ℓ, b

173.818° · -13.564°

Ecliptic λ, β

72.001° · 3.837°

HTM-20 index

-1486290907

Similar Worlds

UCAC4 328-061594 b

Gas Giant · Unknown

Radius 12.10 R⊕ · 130.2 ly

KMT-2021-BLG-1770L b

Gas Giant · Unknown

Radius 12.10 R⊕ · 22,570.0 ly

KMT-2023-BLG-1743L b

Gas Giant · Unknown

Radius 12.10 R⊕ · 23,254.9 ly

KMT-2019-BLG-0335L b

Gas Giant · Unknown

Radius 12.10 R⊕ · 25,146.6 ly

KMT-2019-BLG-0297L b

Gas Giant · Unknown

Radius 12.10 R⊕ · 10,078.2 ly

KMT-2022-BLG-1013L b

Gas Giant · Unknown

Radius 12.10 R⊕ · 25,146.6 ly

Explore Related Categories

Gas Giant Planets Imaging Discoveries European Space Agency (ESA) Gaia Satellite Mission