Confirmed Exoplanet Discovered 2022

KMT-2021-BLG-0748L b

A gas giant orbiting the unknown KMT-2021-BLG-0748L, located approximately 19,862.9 light-years from Earth.

Key parameters at a glance

  • A radius of 14.30 Earth radii
  • A mass of 143.02 Earth masses
  • Surface gravity around 0.70 g
  • Semi-major axis 2.4300 AU
  • Distance from Earth 19,862.90 light-years
  • Earth Similarity Index 0.246
  • Travel time at Voyager 1 speed 350,282,229 years

KMT-2021-BLG-0748L b Planet Profile

Physical Specs

Radius
14.30 R⊕
Radius (Jupiter)
1.280 R♃
Mass
143.02 M⊕
Mass (Jupiter)
0.450 M♃
Density
0.27 g/cm³
Surface Gravity
0.70 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.246
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

#301of 1771

top 16.9%

This planet

14.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2021-BLG-0748L b Jupiter
Radius (R⊕)1.0014.3011.21
Mass (M⊕)1.00143.02317.83
Density (g/cm³)5.510.271.33
Surface Gravity (g)1.000.702.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 143.023 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 14.300 R⊕ · percentile 82 / cohort 1771
Mass 143.023 M⊕ · percentile 11 / cohort 1747
Distance 6,090.00 pc · percentile 95 / cohort 1759
ESI 0.246 · percentile 43 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.4300 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)

0.246

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Ryu et al. 2022

Instrument

18k Mosaic CCD camera

Publication

2022-11

Observation locale

Ground

Host System: KMT-2021-BLG-0748L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.360 M☉

Metallicity [Fe/H]

Distance
6,090.00 parsec
Light-years 19,862.90 ly
V-band magnitude
mag
Voyager-speed travel 350,282,229 yr

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