Confirmed Exoplanet Discovered 2005

OGLE-2005-BLG-390L b

A sub-neptune orbiting the unknown OGLE-2005-BLG-390L, located approximately 21,526.3 light-years from Earth.

Key parameters at a glance

  • A radius of 2.21 Earth radii
  • A mass of 5.50 Earth masses
  • Surface gravity around 1.13 g
  • An orbital period of 3,285.000 days
  • Semi-major axis 2.6000 AU
  • Equilibrium temperature 50 K (-223 °C)
  • Distance from Earth 21,526.30 light-years
  • Earth Similarity Index 0.147
  • Travel time at Voyager 1 speed 379,616,209 years

OGLE-2005-BLG-390L b Planet Profile

Physical Specs

Radius
2.21 R⊕
Radius (Jupiter)
0.197 R♃
Mass
5.50 M⊕
Mass (Jupiter)
0.017 M♃
Density
2.80 g/cm³
Surface Gravity
1.13 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.147
HZ Position Unknown
Controversial No

Discovery

Year 2005
Method Microlensing
Facility OGLE
Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#1658of 1978

top 83.8%

This planet

2.21R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-335 b 2.21 R⊕ K2-275 c 2.21 R⊕ Kepler-989 b 2.21 R⊕
Metric Earth OGLE-2005-BLG-390L b Jupiter
Radius (R⊕)1.002.2111.21
Mass (M⊕)1.005.50317.83
Density (g/cm³)5.512.801.33
Surface Gravity (g)1.001.132.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 5.500 M⊕ Direct mass measurement (not derived).

Percentile among Sub-Neptune cohort

Radius 2.210 R⊕ · percentile 16 / cohort 1978
Mass 5.500 M⊕ · percentile 16 / cohort 1978
Orbital period 3,285.00 d · percentile 100 / cohort 1946
Distance 6,600.00 pc · percentile 99 / cohort 1975
ESI 0.147 · percentile 2 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
3,285.000 days
Semi-major axis
2.6000 AU
Eccentricity
—
Inclination
— °

Year Length

A year here lasts about 8.99 Earth years at a mean orbital distance of 2.6000 AU.

Eq. Temperature

50K

(-223 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.147

0 = alien, 1 = Earth-identical

Insufficient insolation data — any water would exist as deep ice.

Discovery Paper

Primary reference

Beaulieu et al. 2006

Instrument

OGLE CCD Array

Publication

2006-01

Observation locale

Ground

Host System: OGLE-2005-BLG-390L

Spectral Class

Unknown

Effective Temperature

—

Estimated Age

—

Stellar Radius

—

Stellar Mass

0.220 M☉

Metallicity [Fe/H]

—

Distance
6,600.00 parsec
Light-years 21,526.30 ly
V-band magnitude
— mag
Voyager-speed travel 379,616,209 yr

Similar Worlds

KMT-2018-BLG-1988L b

Sub-Neptune · Unknown

Radius 2.22 R⊕ · 13,535.5 ly

KMT-2017-BLG-0428L b

Sub-Neptune · Unknown

Radius 2.23 R⊕ · 17,612.4 ly

OGLE-2017-BLG-1806L b

Sub-Neptune · Unknown

Radius 2.15 R⊕ · 20,874.0 ly

KMT-2017-BLG-1003L b

Sub-Neptune · Unknown

Radius 2.13 R⊕ · 23,124.5 ly

KMT-2018-BLG-1025L b

Sub-Neptune · Unknown

Radius 2.34 R⊕ · 21,868.8 ly

OGLE-2018-BLG-0532L b

Sub-Neptune · Unknown

Radius 2.37 R⊕ · 2,521.2 ly

Explore Related Categories

Sub-Neptune Planets Microlensing Discoveries OGLE Mission