Confirmed Exoplanet Discovered 2021

KMT-2018-BLG-1996L b

A gas giant orbiting the unknown KMT-2018-BLG-1996L, located approximately 19,275.8 light-years from Earth.

Key parameters at a glance

  • A radius of 13.70 Earth radii
  • A mass of 346.43 Earth masses
  • Surface gravity around 1.85 g
  • Semi-major axis 4.2700 AU
  • Distance from Earth 19,275.82 light-years
  • Earth Similarity Index 0.317
  • Travel time at Voyager 1 speed 339,929,060 years

KMT-2018-BLG-1996L b Planet Profile

Physical Specs

Radius
13.70 R⊕
Radius (Jupiter)
1.230 R♃
Mass
346.43 M⊕
Mass (Jupiter)
1.090 M♃
Density
0.74 g/cm³
Surface Gravity
1.85 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.317
HZ Position Unknown
Controversial No

Discovery

Year 2021
Method Microlensing
Facility KMTNet
Telescope 1.6 m wide-field telescope

Size rank in cohort

Rank by radius

#554of 1771

top 31.2%

This planet

13.70R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2018-BLG-1996L b Jupiter
Radius (R⊕)1.0013.7011.21
Mass (M⊕)1.00346.43317.83
Density (g/cm³)5.510.741.33
Surface Gravity (g)1.001.852.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 346.433 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.700 R⊕ · percentile 66 / cohort 1771
Mass 346.433 M⊕ · percentile 37 / cohort 1747
Distance 5,910.00 pc · percentile 94 / cohort 1759
ESI 0.317 · percentile 62 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
4.2700 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)

0.317

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2021

Instrument

18k Mosaic CCD camera

Publication

2021-06

Observation locale

Ground

Host System: KMT-2018-BLG-1996L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.690 M☉

Metallicity [Fe/H]

Distance
5,910.00 parsec
Light-years 19,275.82 ly
V-band magnitude
mag
Voyager-speed travel 339,929,060 yr

Similar Worlds

Explore Related Categories