Confirmed Exoplanet Discovered 2022

KMT-2021-BLG-1303L b

A gas giant orbiting the unknown KMT-2021-BLG-1303L, located approximately 20,482.6 light-years from Earth.

Key parameters at a glance

  • A radius of 13.60 Earth radii
  • A mass of 120.77 Earth masses
  • Surface gravity around 0.65 g
  • Semi-major axis 2.8900 AU
  • Distance from Earth 20,482.60 light-years
  • Earth Similarity Index 0.249
  • Travel time at Voyager 1 speed 361,210,574 years

KMT-2021-BLG-1303L b Planet Profile

Physical Specs

Radius
13.60 R⊕
Radius (Jupiter)
1.210 R♃
Mass
120.77 M⊕
Mass (Jupiter)
0.380 M♃
Density
0.26 g/cm³
Surface Gravity
0.65 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.249
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

#609of 1771

top 34.3%

This planet

13.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2021-BLG-1303L b Jupiter
Radius (R⊕)1.0013.6011.21
Mass (M⊕)1.00120.77317.83
Density (g/cm³)5.510.261.33
Surface Gravity (g)1.000.652.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 120.775 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.600 R⊕ · percentile 63 / cohort 1771
Mass 120.775 M⊕ · percentile 8 / cohort 1747
Distance 6,280.00 pc · percentile 95 / cohort 1759
ESI 0.249 · percentile 44 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.8900 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)

0.249

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2022

Instrument

18k Mosaic CCD camera

Publication

2022-08

Observation locale

Ground

Host System: KMT-2021-BLG-1303L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.570 M☉

Metallicity [Fe/H]

Distance
6,280.00 parsec
Light-years 20,482.60 ly
V-band magnitude
mag
Voyager-speed travel 361,210,574 yr

Similar Worlds

Explore Related Categories