Confirmed Exoplanet Discovered 2018

KMT-2016-BLG-0212L b

A gas giant orbiting the unknown KMT-2016-BLG-0212L, located approximately 20,547.8 light-years from Earth.

Key parameters at a glance

  • A radius of 12.20 Earth radii
  • A mass of 5,700.00 Earth masses
  • Surface gravity around 38.30 g
  • Semi-major axis 2.2000 AU
  • Distance from Earth 20,547.83 light-years
  • Earth Similarity Index 0.307
  • Travel time at Voyager 1 speed 362,360,927 years

KMT-2016-BLG-0212L b Planet Profile

Physical Specs

Radius
12.20 R⊕
Radius (Jupiter)
1.080 R♃
Mass
5,700.00 M⊕
Mass (Jupiter)
18.000 M♃
Density
17.20 g/cm³
Surface Gravity
38.30 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.307
HZ Position Unknown
Controversial No

Discovery

Year 2018
Method Microlensing
Facility KMTNet
Telescope 1.6 m wide-field telescope

Size rank in cohort

Rank by radius

#1410of 1771

top 79.6%

This planet

12.20R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2016-BLG-0212L b Jupiter
Radius (R⊕)1.0012.2011.21
Mass (M⊕)1.005,700.00317.83
Density (g/cm³)5.5117.201.33
Surface Gravity (g)1.0038.302.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 5,700.000 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 12.200 R⊕ · percentile 19 / cohort 1771
Mass 5,700.000 M⊕ · percentile 95 / cohort 1747
Distance 6,300.00 pc · percentile 95 / cohort 1759
ESI 0.307 · percentile 60 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.2000 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)

0.307

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Hwang et al. 2018

Instrument

18k Mosaic CCD camera

Publication

2018-12

Observation locale

Ground

Host System: KMT-2016-BLG-0212L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.480 M☉

Metallicity [Fe/H]

Distance
6,300.00 parsec
Light-years 20,547.83 ly
V-band magnitude
mag
Voyager-speed travel 362,360,927 yr

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