Confirmed Exoplanet Discovered 2022

KMT-2019-BLG-1552L b

A gas giant orbiting the unknown KMT-2019-BLG-1552L, located approximately 15,003.2 light-years from Earth.

Key parameters at a glance

  • A radius of 13.00 Earth radii
  • A mass of 1,287.21 Earth masses
  • Surface gravity around 7.62 g
  • Semi-major axis 2.6000 AU
  • Distance from Earth 15,003.18 light-years
  • Earth Similarity Index 0.417
  • Travel time at Voyager 1 speed 264,580,994 years

KMT-2019-BLG-1552L b Planet Profile

Physical Specs

Radius
13.00 R⊕
Radius (Jupiter)
1.160 R♃
Mass
1,287.21 M⊕
Mass (Jupiter)
4.050 M♃
Density
3.22 g/cm³
Surface Gravity
7.62 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.417
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

#960of 1771

top 54.2%

This planet

13.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2019-BLG-1552L b Jupiter
Radius (R⊕)1.0013.0011.21
Mass (M⊕)1.001,287.21317.83
Density (g/cm³)5.513.221.33
Surface Gravity (g)1.007.622.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 1,287.205 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.000 R⊕ · percentile 43 / cohort 1771
Mass 1,287.205 M⊕ · percentile 72 / cohort 1747
Distance 4,600.00 pc · percentile 93 / cohort 1759
ESI 0.417 · percentile 91 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.6000 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)

0.417

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-1552L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.790 M☉

Metallicity [Fe/H]

Distance
4,600.00 parsec
Light-years 15,003.18 ly
V-band magnitude
mag
Voyager-speed travel 264,580,994 yr

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