Confirmed Exoplanet Discovered 2018

OGLE-2011-BLG-0173L b

A neptune-like orbiting the unknown OGLE-2011-BLG-0173L, located approximately 19,895.5 light-years from Earth.

Key parameters at a glance

  • A radius of 9.01 Earth radii
  • A mass of 60.00 Earth masses
  • Surface gravity around 0.74 g
  • Semi-major axis 8.0000 AU
  • Distance from Earth 19,895.52 light-years
  • Earth Similarity Index 0.328
  • Travel time at Voyager 1 speed 350,857,405 years

OGLE-2011-BLG-0173L b Planet Profile

Physical Specs

Radius
9.01 R⊕
Radius (Jupiter)
0.804 R♃
Mass
60.00 M⊕
Mass (Jupiter)
0.190 M♃
Density
0.45 g/cm³
Surface Gravity
0.74 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.328
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

#89of 574

top 15.3%

This planet

9.01R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

KMT-2018-BLG-0748L b 9.01 R⊕ Kepler-51 c 9.00 R⊕ Kepler-817 b 9.03 R⊕
Metric Earth OGLE-2011-BLG-0173L b Jupiter
Radius (R⊕)1.009.0111.21
Mass (M⊕)1.0060.00317.83
Density (g/cm³)5.510.451.33
Surface Gravity (g)1.000.742.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 60.000 M⊕ Direct mass measurement (not derived).

Percentile among Neptune-like cohort

Radius 9.010 R⊕ · percentile 84 / cohort 574
Mass 60.000 M⊕ · percentile 78 / cohort 574
Distance 6,100.00 pc · percentile 94 / cohort 572
ESI 0.328 · percentile 58 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period
— days
Semi-major axis
8.0000 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)

0.328

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Poleski et al. 2018

Instrument

OGLE CCD Array

Publication

2018-09

Observation locale

Ground

Discovery cohort

Planets confirmed in 2018 at OGLE (10 shown).

OGLE-2017-BLG-0173L b · Super-Earth OGLE-2017-BLG-1434L b · Super-Earth OGLE-2017-BLG-0482L b · Sub-Neptune OGLE-2013-BLG-1761L b · Gas Giant OGLE-2016-BLG-1266L b · Gas Giant OGLE-2017-BLG-1140L b · Gas Giant OGLE-2014-BLG-1722L b · Neptune-like OGLE-2014-BLG-1722L c · Gas Giant OGLE-2017-BLG-1522L b · Gas Giant OGLE-2017-BLG-0373L b · Gas Giant

Host System: OGLE-2011-BLG-0173L

Spectral Class

Unknown

Effective Temperature

—

Estimated Age

—

Stellar Radius

—

Stellar Mass

0.410 M☉

Metallicity [Fe/H]

—

Distance
6,100.00 parsec
Light-years 19,895.52 ly
V-band magnitude
— mag
Voyager-speed travel 350,857,405 yr

Similar Worlds

KMT-2018-BLG-0748L b

Neptune-like · Unknown

Radius 9.01 R⊕ · 23,809.4 ly

KMT-2019-BLG-1042L b

Neptune-like · Unknown

Radius 9.05 R⊕ · 21,526.3 ly

SWEEPS-4 b

Neptune-like · Unknown

Radius 9.08 R⊕ · 27,723.3 ly

KMT-2021-BLG-1372L b

Neptune-like · Unknown

Radius 9.12 R⊕ · 19,471.5 ly

OGLE-2008-BLG-092L b

Neptune-like · Unknown

Radius 8.74 R⊕ · 26,418.6 ly

OGLE-2018-BLG-1212L b

Neptune-like · Unknown

Radius 9.32 R⊕ · 5,055.4 ly

Explore Related Categories

Neptune-like Planets Microlensing Discoveries OGLE Mission