Confirmed Exoplanet Discovered 2023

KMT-2019-BLG-2783L b

A gas giant orbiting the unknown KMT-2019-BLG-2783L, located approximately 19,275.8 light-years from Earth.

Key parameters at a glance

  • A radius of 13.70 Earth radii
  • A mass of 368.68 Earth masses
  • Surface gravity around 1.96 g
  • Semi-major axis 1.8500 AU
  • Distance from Earth 19,275.82 light-years
  • Earth Similarity Index 0.321
  • Travel time at Voyager 1 speed 339,929,060 years

KMT-2019-BLG-2783L b Planet Profile

Physical Specs

Radius
13.70 R⊕
Radius (Jupiter)
1.220 R♃
Mass
368.68 M⊕
Mass (Jupiter)
1.160 M♃
Density
0.79 g/cm³
Surface Gravity
1.96 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.321
HZ Position Unknown
Controversial No

Discovery

Year 2023
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-2019-BLG-2783L b Jupiter
Radius (R⊕)1.0013.7011.21
Mass (M⊕)1.00368.68317.83
Density (g/cm³)5.510.791.33
Surface Gravity (g)1.001.962.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 368.681 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.700 R⊕ · percentile 66 / cohort 1771
Mass 368.681 M⊕ · percentile 39 / cohort 1747
Distance 5,910.00 pc · percentile 94 / cohort 1759
ESI 0.321 · percentile 63 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
1.8500 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)

0.321

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Jung et al. 2023

Instrument

18k Mosaic CCD camera

Publication

2023-06

Observation locale

Ground

Host System: KMT-2019-BLG-2783L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.340 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

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