Confirmed Exoplanet Discovered 2006

OGLE-2005-BLG-169L b

A sub-neptune orbiting the k-type orange OGLE-2005-BLG-169L, located approximately 13,372.4 light-years from Earth.

Key parameters at a glance

  • A radius of 3.84 Earth radii
  • A mass of 14.10 Earth masses
  • Surface gravity around 0.96 g
  • Semi-major axis 3.5000 AU
  • Distance from Earth 13,372.40 light-years
  • Earth Similarity Index 0.558
  • Travel time at Voyager 1 speed 235,822,190 years

Context from the literature

OGLE-2005-BLG-169Lb is an extrasolar planet located approximately 2,700 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-2005-BLG-169L. This planet was discovered by the OGLE project using the gravitational microlensing method. Based on a most likely mass for the host star of 0.49 solar mass (M☉), the planet has a mass of 13 times that of Earth (M🜨). Its mass and estimated temperature are close to those of Uranus. It is speculated that this planet may either be an ice giant like Uranus, or a "naked super-Earth" with a solid icy or rocky surface.

Excerpted from Wikipedia · full article

OGLE-2005-BLG-169L b Planet Profile

Physical Specs

Radius
3.84 R⊕
Radius (Jupiter)
0.343 R♃
Mass
14.10 M⊕
Mass (Jupiter)
0.044 M♃
Density
1.37 g/cm³
Surface Gravity
0.96 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.558
HZ Position Unknown
Controversial No

Discovery

Year 2006
Method Microlensing
Facility OGLE
Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#47of 1978

top 2.3%

This planet

3.84R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Metric Earth OGLE-2005-BLG-169L b Jupiter
Radius (R⊕)1.003.8411.21
Mass (M⊕)1.0014.10317.83
Density (g/cm³)5.511.371.33
Surface Gravity (g)1.000.962.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 14.100 M⊕ Direct mass measurement (not derived).

Percentile among Sub-Neptune cohort

Radius 3.840 R⊕ · percentile 98 / cohort 1978
Mass 14.100 M⊕ · percentile 91 / cohort 1978
Distance 4,100.00 pc · percentile 99 / cohort 1975
ESI 0.558 · percentile 77 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
days
Semi-major axis
3.5000 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)

0.558

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Gould et al. 2006

Instrument

OGLE CCD Array

Publication

2006-06

Observation locale

Ground

Host System: OGLE-2005-BLG-169L

Spectral Class

K-type orange

Effective Temperature

Estimated Age

Stellar Radius

Stellar Mass

0.690 M☉

Metallicity [Fe/H]

Distance
4,100.00 parsec
Light-years 13,372.40 ly
V-band magnitude
22.78 mag
Voyager-speed travel 235,822,190 yr

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