Key parameters at a glance
- A radius of 8.39 Earth radii
- A mass of 53.10 Earth masses
- Surface gravity around 0.75 g
- Semi-major axis 4.4300 AU
- Distance from Earth 20,613.06 light-years
- Earth Similarity Index 0.343
- Travel time at Voyager 1 speed 363,511,279 years
OGLE-2012-BLG-0838L b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#130of 574
top 22.5%
This planet
8.39R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | OGLE-2012-BLG-0838L b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 8.39 | 11.21 |
| Mass (M⊕) | 1.00 | 53.10 | 317.83 |
| Density (g/cm³) | 5.51 | 0.49 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.75 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 53.100 M⊕ | Direct mass measurement (not derived). |
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
Orbital period for this planet has not yet been measured.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.343
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Poleski et al. 2020Instrument
OGLE CCD Array
Publication
2020-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 2020 at OGLE (11 shown).
Host System: OGLE-2012-BLG-0838L
Spectral Class
Unknown
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.400 M☉
Metallicity [Fe/H]
—
Similar Worlds
OGLE-2014-BLG-1722L b
Neptune-like · Unknown
Radius 8.59 R⊕ · 20,874.0 ly
KMT-2024-BLG-2005L b
Neptune-like · Unknown
Radius 8.18 R⊕ · 25,179.2 ly
OGLE-2008-BLG-092L b
Neptune-like · Unknown
Radius 8.74 R⊕ · 26,418.6 ly
KMT-2018-BLG-0748L b
Neptune-like · Unknown
Radius 9.01 R⊕ · 23,809.4 ly
OGLE-2011-BLG-0173L b
Neptune-like · Unknown
Radius 9.01 R⊕ · 19,895.5 ly
KMT-2019-BLG-1042L b
Neptune-like · Unknown
Radius 9.05 R⊕ · 21,526.3 ly