Confirmed Exoplanet Discovered 2022

KMT-2019-BLG-2974L b

A gas giant orbiting the unknown KMT-2019-BLG-2974L, located approximately 19,895.5 light-years from Earth.

Key parameters at a glance

  • A radius of 11.40 Earth radii
  • A mass of 88.99 Earth masses
  • Surface gravity around 0.68 g
  • Semi-major axis 2.0000 AU
  • Distance from Earth 19,895.52 light-years
  • Earth Similarity Index 0.280
  • Travel time at Voyager 1 speed 350,857,405 years

KMT-2019-BLG-2974L b Planet Profile

Physical Specs

Radius
11.40 R⊕
Radius (Jupiter)
1.010 R♃
Mass
88.99 M⊕
Mass (Jupiter)
0.280 M♃
Density
0.33 g/cm³
Surface Gravity
0.68 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.280
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

#1604of 1771

top 90.5%

This planet

11.40R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2019-BLG-2974L b Jupiter
Radius (R⊕)1.0011.4011.21
Mass (M⊕)1.0088.99317.83
Density (g/cm³)5.510.331.33
Surface Gravity (g)1.000.682.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 88.992 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 11.400 R⊕ · percentile 9 / cohort 1771
Mass 88.992 M⊕ · percentile 4 / cohort 1747
Distance 6,100.00 pc · percentile 95 / cohort 1759
ESI 0.280 · percentile 52 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.0000 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)

0.280

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Zang et al. 2022

Instrument

18k Mosaic CCD camera

Publication

2022-09

Observation locale

Ground

Host System: KMT-2019-BLG-2974L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.470 M☉

Metallicity [Fe/H]

Distance
6,100.00 parsec
Light-years 19,895.52 ly
V-band magnitude
mag
Voyager-speed travel 350,857,405 yr

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