Confirmed Exoplanet Discovered 2022

KMT-2021-BLG-0119L b

A gas giant orbiting the unknown KMT-2021-BLG-0119L, located approximately 10,208.7 light-years from Earth.

Key parameters at a glance

  • A radius of 12.80 Earth radii
  • A mass of 1,754.41 Earth masses
  • Surface gravity around 10.71 g
  • Semi-major axis 2.9200 AU
  • Distance from Earth 10,208.68 light-years
  • Earth Similarity Index 0.435
  • Travel time at Voyager 1 speed 180,030,111 years

KMT-2021-BLG-0119L b Planet Profile

Physical Specs

Radius
12.80 R⊕
Radius (Jupiter)
1.140 R♃
Mass
1,754.41 M⊕
Mass (Jupiter)
5.520 M♃
Density
4.60 g/cm³
Surface Gravity
10.71 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.435
HZ Position Unknown
Controversial No

Discovery

Year 2022
Method Microlensing
Facility KMTNet
Telescope 1.6 m wide-field telescope

Size rank in cohort

Rank by radius

#1063of 1771

top 60.0%

This planet

12.80R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2021-BLG-0119L b Jupiter
Radius (R⊕)1.0012.8011.21
Mass (M⊕)1.001,754.41317.83
Density (g/cm³)5.514.601.33
Surface Gravity (g)1.0010.712.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 1,754.413 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 12.800 R⊕ · percentile 37 / cohort 1771
Mass 1,754.413 M⊕ · percentile 77 / cohort 1747
Distance 3,130.00 pc · percentile 91 / cohort 1759
ESI 0.435 · percentile 96 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.9200 AU
Eccentricity
Inclination
°

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.435

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Shin et al. 2022

Instrument

18k Mosaic CCD camera

Publication

2022-09

Observation locale

Ground

Host System: KMT-2021-BLG-0119L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.560 M☉

Metallicity [Fe/H]

Distance
3,130.00 parsec
Light-years 10,208.68 ly
V-band magnitude
mag
Voyager-speed travel 180,030,111 yr

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