Confirmed Exoplanet Discovered 2021

OGLE-2018-BLG-1428L b

A gas giant orbiting the unknown OGLE-2018-BLG-1428L, located approximately 20,286.9 light-years from Earth.

Key parameters at a glance

  • A radius of 14.00 Earth radii
  • A mass of 240.00 Earth masses
  • Surface gravity around 1.22 g
  • Semi-major axis 3.3000 AU
  • Distance from Earth 20,286.90 light-years
  • Earth Similarity Index 0.285
  • Travel time at Voyager 1 speed 357,759,518 years

OGLE-2018-BLG-1428L b Planet Profile

Physical Specs

Radius
14.00 R⊕
Radius (Jupiter)
1.250 R♃
Mass
240.00 M⊕
Mass (Jupiter)
0.770 M♃
Density
0.48 g/cm³
Surface Gravity
1.22 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.285
HZ Position Unknown
Controversial No

Discovery

Year 2021
Method Microlensing
Facility OGLE
Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#415of 1771

top 23.4%

This planet

14.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth OGLE-2018-BLG-1428L b Jupiter
Radius (R⊕)1.0014.0011.21
Mass (M⊕)1.00240.00317.83
Density (g/cm³)5.510.481.33
Surface Gravity (g)1.001.222.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 240.000 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 14.000 R⊕ · percentile 74 / cohort 1771
Mass 240.000 M⊕ · percentile 26 / cohort 1747
Distance 6,220.00 pc · percentile 95 / cohort 1759
ESI 0.285 · percentile 53 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
3.3000 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)

0.285

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Kim et al. 2021

Instrument

OGLE CCD Array

Publication

2021-02

Observation locale

Ground

Host System: OGLE-2018-BLG-1428L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.430 M☉

Metallicity [Fe/H]

Distance
6,220.00 parsec
Light-years 20,286.90 ly
V-band magnitude
mag
Voyager-speed travel 357,759,518 yr

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