Confirmed Exoplanet Discovered 2022

KMT-2018-BLG-0087L b

A gas giant orbiting the unknown KMT-2018-BLG-0087L, located approximately 22,896.2 light-years from Earth.

Key parameters at a glance

  • A radius of 10.10 Earth radii
  • A mass of 73.10 Earth masses
  • Surface gravity around 0.72 g
  • Semi-major axis 0.8700 AU
  • Distance from Earth 22,896.15 light-years
  • Earth Similarity Index 0.304
  • Travel time at Voyager 1 speed 403,773,604 years

KMT-2018-BLG-0087L b Planet Profile

Physical Specs

Radius
10.10 R⊕
Radius (Jupiter)
0.903 R♃
Mass
73.10 M⊕
Mass (Jupiter)
0.230 M♃
Density
0.39 g/cm³
Surface Gravity
0.72 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.304
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

#1759of 1771

top 99.3%

This planet

10.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2018-BLG-0087L b Jupiter
Radius (R⊕)1.0010.1011.21
Mass (M⊕)1.0073.10317.83
Density (g/cm³)5.510.391.33
Surface Gravity (g)1.000.722.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 73.101 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 10.100 R⊕ · percentile 0 / cohort 1771
Mass 73.101 M⊕ · percentile 1 / cohort 1747
Distance 7,020.00 pc · percentile 98 / cohort 1759
ESI 0.304 · percentile 59 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
0.8700 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)

0.304

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Jung et al. 2022

Instrument

18k Mosaic CCD camera

Publication

2022-12

Observation locale

Ground

Host System: KMT-2018-BLG-0087L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.100 M☉

Metallicity [Fe/H]

Distance
7,020.00 parsec
Light-years 22,896.15 ly
V-band magnitude
mag
Voyager-speed travel 403,773,604 yr

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