Key parameters at a glance

A radius of 3.52 Earth radii
A mass of 12.15 Earth masses
Surface gravity around 0.98 g
Semi-major axis 2.1500 AU
Distance from Earth 6,001.27 light-years
Earth Similarity Index 0.585
Travel time at Voyager 1 speed 105,832,398 years

MOA-2022-BLG-033L b Planet Profile

Physical Specs

Radius

3.52 R⊕

Radius (Jupiter)

0.314 R♃

Mass

12.15 M⊕

Mass (Jupiter)

0.038 M♃

Density

1.53 g/cm³

Surface Gravity

0.98 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.585

HZ Position Unknown

Controversial No

Discovery

Year 2025

Method Microlensing

Facility MOA

Telescope 1.8 m MOA Telescope

Size rank in cohort

Rank by radius

#169of 1978

top 8.5%

This planet

3.52R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-657 b 3.52 R⊕ HD 45184 b 3.52 R⊕ Kepler-687 b 3.52 R⊕

Metric	Earth	MOA-2022-BLG-033L b	Jupiter
Radius (R⊕)	1.00	3.52	11.21
Mass (M⊕)	1.00	12.15	317.83
Density (g/cm³)	5.51	1.53	1.33
Surface Gravity (g)	1.00	0.98	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	12.150 M⊕	Direct mass measurement (not derived).

Percentile among Sub-Neptune cohort

Radius 3.520 R⊕ · percentile 91 / cohort 1978

Mass 12.150 M⊕ · percentile 84 / cohort 1978

Distance 1,840.00 pc · percentile 96 / cohort 1975

ESI 0.585 · percentile 81 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

2.1500 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)

0.585

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2025

Instrument

MOA CCD Array

Publication

2025-02

Observation locale

Ground

Host System: MOA-2022-BLG-033L

Spectral Class

F-type yellow-white

Effective Temperature

—

Estimated Age

—

Stellar Radius

—

Stellar Mass

0.510 M☉

Metallicity [Fe/H]

—

Distance

1,840.00 parsec

Light-years 6,001.27 ly

V-band magnitude

— mag

Voyager-speed travel 105,832,398 yr