Confirmed Exoplanet Discovered 2020

KMT-2018-BLG-1292L b

A gas giant orbiting the unknown KMT-2018-BLG-1292L, located approximately 11,285.0 light-years from Earth.

Key parameters at a glance

  • A radius of 12.90 Earth radii
  • A mass of 1,400.00 Earth masses
  • Surface gravity around 8.41 g
  • Semi-major axis 6.0300 AU
  • Distance from Earth 11,285.00 light-years
  • Earth Similarity Index 0.423
  • Travel time at Voyager 1 speed 199,010,922 years

KMT-2018-BLG-1292L b Planet Profile

Physical Specs

Radius
12.90 R⊕
Radius (Jupiter)
1.150 R♃
Mass
1,400.00 M⊕
Mass (Jupiter)
4.420 M♃
Density
3.58 g/cm³
Surface Gravity
8.41 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.423
HZ Position Unknown
Controversial No

Discovery

Year 2020
Method Microlensing
Facility KMTNet
Telescope 1.6 m wide-field telescope

Size rank in cohort

Rank by radius

#1011of 1771

top 57.0%

This planet

12.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2018-BLG-1292L b Jupiter
Radius (R⊕)1.0012.9011.21
Mass (M⊕)1.001,400.00317.83
Density (g/cm³)5.513.581.33
Surface Gravity (g)1.008.412.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 1,400.000 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 12.900 R⊕ · percentile 41 / cohort 1771
Mass 1,400.000 M⊕ · percentile 73 / cohort 1747
Distance 3,460.00 pc · percentile 91 / cohort 1759
ESI 0.423 · percentile 92 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
6.0300 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)

0.423

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Ryu et al. 2020

Instrument

18k Mosaic CCD camera

Publication

2020-02

Observation locale

Ground

Host System: KMT-2018-BLG-1292L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

1.090 M☉

Metallicity [Fe/H]

Distance
3,460.00 parsec
Light-years 11,285.00 ly
V-band magnitude
mag
Voyager-speed travel 199,010,922 yr

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