Confirmed Exoplanet Discovered 2023

KMT-2018-BLG-0885L b

A gas giant orbiting the unknown KMT-2018-BLG-0885L, located approximately 22,472.1 light-years from Earth.

Key parameters at a glance

  • A radius of 11.90 Earth radii
  • A mass of 9,217.02 Earth masses
  • Surface gravity around 65.09 g
  • Semi-major axis 1.0700 AU
  • Distance from Earth 22,472.15 light-years
  • Earth Similarity Index 0.248
  • Travel time at Voyager 1 speed 396,296,315 years

KMT-2018-BLG-0885L b Planet Profile

Physical Specs

Radius
11.90 R⊕
Radius (Jupiter)
1.060 R♃
Mass
9,217.02 M⊕
Mass (Jupiter)
29.000 M♃
Density
30.10 g/cm³
Surface Gravity
65.09 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.248
HZ Position Unknown
Controversial No

Discovery

Year 2023
Method Microlensing
Facility KMTNet
Telescope 1.6 m wide-field telescope

Size rank in cohort

Rank by radius

#1526of 1771

top 86.1%

This planet

11.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth KMT-2018-BLG-0885L b Jupiter
Radius (R⊕)1.0011.9011.21
Mass (M⊕)1.009,217.02317.83
Density (g/cm³)5.5130.101.33
Surface Gravity (g)1.0065.092.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 9,217.024 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 11.900 R⊕ · percentile 13 / cohort 1771
Mass 9,217.024 M⊕ · percentile 100 / cohort 1747
Distance 6,890.00 pc · percentile 97 / cohort 1759
ESI 0.248 · percentile 44 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
1.0700 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)

0.248

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2023

Instrument

18k Mosaic CCD camera

Publication

2023-07

Observation locale

Ground

Host System: KMT-2018-BLG-0885L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.290 M☉

Metallicity [Fe/H]

Distance
6,890.00 parsec
Light-years 22,472.15 ly
V-band magnitude
mag
Voyager-speed travel 396,296,315 yr

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