Confirmed Exoplanet Discovered 2018

OGLE-2017-BLG-1522L b

A gas giant orbiting the unknown OGLE-2017-BLG-1522L, located approximately 24,429.1 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 0.5900 AU
  • Distance from Earth 24,429.08 light-years
  • Earth Similarity Index 0.285
  • Travel time at Voyager 1 speed 430,806,879 years

OGLE-2017-BLG-1522L b Planet Profile

Physical Specs

Radius
14.00 R⊕
Radius (Jupiter)
1.250 R♃
Mass
240.00 M⊕
Mass (Jupiter)
0.750 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 2018
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-2017-BLG-1522L 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 7,490.00 pc · percentile 99 / cohort 1759
ESI 0.285 · percentile 53 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
0.5900 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

Jung et al. 2018

Instrument

OGLE CCD Array

Publication

2018-05

Observation locale

Ground

Host System: OGLE-2017-BLG-1522L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.045 M☉

Metallicity [Fe/H]

Distance
7,490.00 parsec
Light-years 24,429.08 ly
V-band magnitude
mag
Voyager-speed travel 430,806,879 yr

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