Confirmed Exoplanet Discovered 2022

KMT-2018-BLG-0247L b

A gas giant orbiting the unknown KMT-2018-BLG-0247L, located approximately 22,048.1 light-years from Earth.

Key parameters at a glance

  • A radius of 13.40 Earth radii
  • A mass of 670.62 Earth masses
  • Surface gravity around 3.73 g
  • Semi-major axis 2.4600 AU
  • Distance from Earth 22,048.15 light-years
  • Earth Similarity Index 0.369
  • Travel time at Voyager 1 speed 388,819,026 years

KMT-2018-BLG-0247L b Planet Profile

Physical Specs

Radius
13.40 R⊕
Radius (Jupiter)
1.190 R♃
Mass
670.62 M⊕
Mass (Jupiter)
2.110 M♃
Density
1.53 g/cm³
Surface Gravity
3.73 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.369
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

#730of 1771

top 41.2%

This planet

13.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2018-BLG-0247L b Jupiter
Radius (R⊕)1.0013.4011.21
Mass (M⊕)1.00670.62317.83
Density (g/cm³)5.511.531.33
Surface Gravity (g)1.003.732.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 670.618 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.400 R⊕ · percentile 56 / cohort 1771
Mass 670.618 M⊕ · percentile 56 / cohort 1747
Distance 6,760.00 pc · percentile 97 / cohort 1759
ESI 0.369 · percentile 76 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.4600 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)

0.369

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-0247L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.290 M☉

Metallicity [Fe/H]

Distance
6,760.00 parsec
Light-years 22,048.15 ly
V-band magnitude
mag
Voyager-speed travel 388,819,026 yr

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