Confirmed Exoplanet Discovered 2018

OGLE-2017-BLG-0482L b

A sub-neptune orbiting the unknown OGLE-2017-BLG-0482L, located approximately 18,917.0 light-years from Earth.

Key parameters at a glance

  • A radius of 2.95 Earth radii
  • A mass of 9.00 Earth masses
  • Surface gravity around 1.03 g
  • Semi-major axis 1.8000 AU
  • Distance from Earth 18,917.05 light-years
  • Earth Similarity Index 0.646
  • Travel time at Voyager 1 speed 333,602,123 years

OGLE-2017-BLG-0482L b Planet Profile

Physical Specs

Radius
2.95 R⊕
Radius (Jupiter)
0.263 R♃
Mass
9.00 M⊕
Mass (Jupiter)
0.028 M♃
Density
1.93 g/cm³
Surface Gravity
1.03 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.646
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

#557of 1978

top 28.1%

This planet

2.95R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Metric Earth OGLE-2017-BLG-0482L b Jupiter
Radius (R⊕)1.002.9511.21
Mass (M⊕)1.009.00317.83
Density (g/cm³)5.511.931.33
Surface Gravity (g)1.001.032.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 9.000 M⊕ Direct mass measurement (not derived).

Percentile among Sub-Neptune cohort

Radius 2.950 R⊕ · percentile 71 / cohort 1978
Mass 9.000 M⊕ · percentile 65 / cohort 1978
Distance 5,800.00 pc · percentile 99 / cohort 1975
ESI 0.646 · percentile 87 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
1.8000 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)

0.646

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2018

Instrument

OGLE CCD Array

Publication

2018-05

Observation locale

Ground

Host System: OGLE-2017-BLG-0482L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.200 M☉

Metallicity [Fe/H]

Distance
5,800.00 parsec
Light-years 18,917.05 ly
V-band magnitude
mag
Voyager-speed travel 333,602,123 yr

Similar Worlds

Explore Related Categories