Confirmed Exoplanet Discovered 2022

OGLE-2017-BLG-1691L b

A sub-neptune orbiting the unknown OGLE-2017-BLG-1691L, located approximately 23,776.8 light-years from Earth.

Key parameters at a glance

  • A radius of 3.92 Earth radii
  • A mass of 14.62 Earth masses
  • Surface gravity around 0.95 g
  • Semi-major axis 2.4100 AU
  • Distance from Earth 23,776.77 light-years
  • Earth Similarity Index 0.550
  • Travel time at Voyager 1 speed 419,303,358 years

OGLE-2017-BLG-1691L b Planet Profile

Physical Specs

Radius
3.92 R⊕
Radius (Jupiter)
0.350 R♃
Mass
14.62 M⊕
Mass (Jupiter)
0.046 M♃
Density
1.33 g/cm³
Surface Gravity
0.95 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.550
HZ Position Unknown
Controversial No

Discovery

Year 2022
Method Microlensing
Facility OGLE
Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#17of 1978

top 0.8%

This planet

3.92R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Metric Earth OGLE-2017-BLG-1691L b Jupiter
Radius (R⊕)1.003.9211.21
Mass (M⊕)1.0014.62317.83
Density (g/cm³)5.511.331.33
Surface Gravity (g)1.000.952.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 14.620 M⊕ Direct mass measurement (not derived).

Percentile among Sub-Neptune cohort

Radius 3.920 R⊕ · percentile 99 / cohort 1978
Mass 14.620 M⊕ · percentile 92 / cohort 1978
Distance 7,290.00 pc · percentile 100 / cohort 1975
ESI 0.550 · percentile 76 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.4100 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)

0.550

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2022

Instrument

OGLE CCD Array

Publication

2022-08

Observation locale

Ground

Host System: OGLE-2017-BLG-1691L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.450 M☉

Metallicity [Fe/H]

Distance
7,290.00 parsec
Light-years 23,776.77 ly
V-band magnitude
mag
Voyager-speed travel 419,303,358 yr

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