Confirmed Exoplanet Discovered 2021

OGLE-2017-BLG-1099L b

A gas giant orbiting the unknown OGLE-2017-BLG-1099L, located approximately 23,646.3 light-years from Earth.

Key parameters at a glance

  • A radius of 13.10 Earth radii
  • A mass of 959.84 Earth masses
  • Surface gravity around 5.59 g
  • Semi-major axis 2.7300 AU
  • Distance from Earth 23,646.31 light-years
  • Earth Similarity Index 0.399
  • Travel time at Voyager 1 speed 417,002,654 years

OGLE-2017-BLG-1099L b Planet Profile

Physical Specs

Radius
13.10 R⊕
Radius (Jupiter)
1.170 R♃
Mass
959.84 M⊕
Mass (Jupiter)
3.020 M♃
Density
2.35 g/cm³
Surface Gravity
5.59 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.399
HZ Position Unknown
Controversial No

Discovery

Year 2021
Method Microlensing
Facility OGLE
Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#910of 1771

top 51.3%

This planet

13.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth OGLE-2017-BLG-1099L b Jupiter
Radius (R⊕)1.0013.1011.21
Mass (M⊕)1.00959.84317.83
Density (g/cm³)5.512.351.33
Surface Gravity (g)1.005.592.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 959.842 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.100 R⊕ · percentile 46 / cohort 1771
Mass 959.842 M⊕ · percentile 66 / cohort 1747
Distance 7,250.00 pc · percentile 99 / cohort 1759
ESI 0.399 · percentile 85 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
2.7300 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)

0.399

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2021

Instrument

OGLE CCD Array

Publication

2021-11

Observation locale

Ground

Host System: OGLE-2017-BLG-1099L

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.450 M☉

Metallicity [Fe/H]

Distance
7,250.00 parsec
Light-years 23,646.31 ly
V-band magnitude
mag
Voyager-speed travel 417,002,654 yr

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