Confirmed Exoplanet Discovered 2022

KMT-2019-BLG-1042L b

A neptune-like orbiting the unknown KMT-2019-BLG-1042L, located approximately 21,526.3 light-years from Earth.

Key parameters at a glance

  • A radius of 9.05 Earth radii
  • A mass of 60.39 Earth masses
  • Surface gravity around 0.74 g
  • Semi-major axis 1.7000 AU
  • Distance from Earth 21,526.30 light-years
  • Earth Similarity Index 0.327
  • Travel time at Voyager 1 speed 379,616,209 years

KMT-2019-BLG-1042L b Planet Profile

Physical Specs

Radius
9.05 R⊕
Radius (Jupiter)
0.807 R♃
Mass
60.39 M⊕
Mass (Jupiter)
0.190 M♃
Density
0.45 g/cm³
Surface Gravity
0.74 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.327
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

#86of 574

top 14.8%

This planet

9.05R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Metric Earth KMT-2019-BLG-1042L b Jupiter
Radius (R⊕)1.009.0511.21
Mass (M⊕)1.0060.39317.83
Density (g/cm³)5.510.451.33
Surface Gravity (g)1.000.742.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 60.387 M⊕ Direct mass measurement (not derived).

Percentile among Neptune-like cohort

Radius 9.050 R⊕ · percentile 85 / cohort 574
Mass 60.387 M⊕ · percentile 79 / cohort 574
Distance 6,600.00 pc · percentile 95 / cohort 572
ESI 0.327 · percentile 57 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
1.7000 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)

0.327

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-1042L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.300 M☉

Metallicity [Fe/H]

Distance
6,600.00 parsec
Light-years 21,526.30 ly
V-band magnitude
mag
Voyager-speed travel 379,616,209 yr

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