Confirmed Exoplanet Discovered 2018

OGLE-2017-BLG-1140L b

A gas giant orbiting the unknown OGLE-2017-BLG-1140L, located approximately Distance pending from Earth.

Key parameters at a glance

  • A radius of 13.50 Earth radii
  • A mass of 505.00 Earth masses
  • Surface gravity around 2.77 g
  • Semi-major axis 1.0200 AU
  • Earth Similarity Index 0.348

OGLE-2017-BLG-1140L b Planet Profile

Physical Specs

Radius
13.50 R⊕
Radius (Jupiter)
1.210 R♃
Mass
505.00 M⊕
Mass (Jupiter)
1.590 M♃
Density
1.13 g/cm³
Surface Gravity
2.77 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.348
HZ Position Unknown
Controversial No

Discovery

Year 2018
Method Microlensing
Facility OGLE
Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#671of 1771

top 37.8%

This planet

13.50R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth OGLE-2017-BLG-1140L b Jupiter
Radius (R⊕)1.0013.5011.21
Mass (M⊕)1.00505.00317.83
Density (g/cm³)5.511.131.33
Surface Gravity (g)1.002.772.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 505.000 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.500 R⊕ · percentile 59 / cohort 1771
Mass 505.000 M⊕ · percentile 49 / cohort 1747
ESI 0.348 · percentile 70 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
1.0200 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)

0.348

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Calchi Novati et al. 2018

Instrument

OGLE CCD Array

Publication

2018-06

Observation locale

Ground

Host System: OGLE-2017-BLG-1140L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.211 M☉

Metallicity [Fe/H]

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