Key parameters at a glance

A radius of 2.48 Earth radii
A mass of 6.70 Earth masses
Surface gravity around 1.09 g
Semi-major axis 0.9000 AU
Distance from Earth 23,515.85 light-years
Earth Similarity Index 0.706
Travel time at Voyager 1 speed 414,701,949 years

MOA-2012-BLG-505L b Planet Profile

Physical Specs

Radius

2.48 R⊕

Radius (Jupiter)

0.221 R♃

Mass

6.70 M⊕

Mass (Jupiter)

0.021 M♃

Density

2.41 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.706

HZ Position Unknown

Controversial No

Discovery

Year 2017

Method Microlensing

Facility MOA

Telescope 1.8 m MOA Telescope

Size rank in cohort

Rank by radius

#1212of 1978

top 61.2%

This planet

2.48R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-15 b 2.48 R⊕ Kepler-256 d 2.48 R⊕ Kepler-266 b 2.48 R⊕

Metric	Earth	MOA-2012-BLG-505L b	Jupiter
Radius (R⊕)	1.00	2.48	11.21
Mass (M⊕)	1.00	6.70	317.83
Density (g/cm³)	5.51	2.41	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	6.700 M⊕	Direct mass measurement (not derived).

Percentile among Sub-Neptune cohort

Radius 2.480 R⊕ · percentile 38 / cohort 1978

Mass 6.700 M⊕ · percentile 36 / cohort 1978

Distance 7,210.00 pc · percentile 100 / cohort 1975

ESI 0.706 · percentile 93 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

0.9000 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)

0.706

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Nagakane et al. 2017

Instrument

MOA CCD Array

Publication

2017-07

Observation locale

Ground

Host System: MOA-2012-BLG-505L

Spectral Class

Unknown

Effective Temperature

—

Estimated Age

—

Stellar Radius

—

Stellar Mass

0.100 M☉

Metallicity [Fe/H]

—

Distance

7,210.00 parsec

Light-years 23,515.85 ly

V-band magnitude

— mag

Voyager-speed travel 414,701,949 yr

Similar Worlds

KMT-2024-BLG-2059L b

Sub-Neptune · Unknown

Radius 2.54 R⊕ · 19,797.7 ly

OGLE-2018-BLG-0977L b

Sub-Neptune · Unknown

Radius 2.41 R⊕ · 21,200.1 ly

KMT-2017-BLG-0849L b

Sub-Neptune · Unknown

Radius 2.41 R⊕ · 23,548.5 ly

OGLE-2018-BLG-0383L b

Sub-Neptune · Unknown

Radius 2.41 R⊕ · 25,114.0 ly

OGLE-2018-BLG-0532L b

Sub-Neptune · Unknown

Radius 2.37 R⊕ · 2,521.2 ly

KMT-2018-BLG-1025L b

Sub-Neptune · Unknown

Radius 2.34 R⊕ · 21,868.8 ly

Explore Related Categories

Sub-Neptune Planets Microlensing Discoveries MOA Mission