Key parameters at a glance

A radius of 12.67 Earth radii
A mass of 321.00 Earth masses
Surface gravity around 2.00 g
An orbital period of 3.979 days
Semi-major axis 0.0510 AU
Equilibrium temperature 1,550 K (1277 °C)
Distance from Earth 8,159.61 light-years
Earth Similarity Index 0.073
Travel time at Voyager 1 speed 143,894,674 years

OGLE-TR-182 b Planet Profile

Physical Specs

Radius

12.67 R⊕

Radius (Jupiter)

1.130 R♃

Mass

321.00 M⊕

Mass (Jupiter)

1.010 M♃

Density

0.41 g/cm³

Surface Gravity

2.00 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.073

HZ Position Unknown

Controversial No

Discovery

Year 2007

Method Transit

Facility OGLE

Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#1174of 1771

top 66.2%

This planet

12.67R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

SWEEPS-11 b 12.67 R⊕ HATS-50 b 12.67 R⊕ HD 189733 b 12.67 R⊕

Metric	Earth	OGLE-TR-182 b	Jupiter
Radius (R⊕)	1.00	12.67	11.21
Mass (M⊕)	1.00	321.00	317.83
Density (g/cm³)	5.51	0.41	1.33
Surface Gravity (g)	1.00	2.00	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	320.995 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 466884459

Gaia DR2

Gaia DR2 5337294049909975680

Gaia DR3

Gaia DR3 5337294049909975680

System

OGLE-TR-182

Percentile among Gas Giant cohort

Radius 12.666 R⊕ · percentile 34 / cohort 1771

Mass 320.995 M⊕ · percentile 35 / cohort 1747

Orbital period 3.98 d · percentile 28 / cohort 1533

Distance 2,501.75 pc · percentile 90 / cohort 1759

ESI 0.073 · percentile 15 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.979 days

Semi-major axis

0.0510 AU

Eccentricity

0.000

Inclination

85.70 °

Year Length

A year here lasts approximately 3.98 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0510 AU.

Transit Fingerprint

Depth

1.040 %

Transit midpoint (BJD)

2,454,270.5720

Photometric dip

Transit produces a flux drop of 10,400 ppm.

Extended Orbital Architecture

Semi-major axis / stellar radius

7.299

RV semi-amplitude (K)

120.000 m/s

Transit mid-time (BJD)

2,454,270.5720

Angular separation (arcsec)

0.02040

Eq. Temperature

1,550K

(1277 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.073

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Pont et al. 2008

Instrument

OGLE CCD Array

Publication

2008-08

Observation locale

Ground

Host System: OGLE-TR-182

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,924 K — hotter than the Sun (5,778 K)

Estimated Age

4.30 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.140 R☉

Stellar Mass

1.140 M☉

Metallicity [Fe/H]

0.37

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

0.460 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,501.75 parsec

Light-years 8,159.61 ly

V-band magnitude

16.92 mag

Voyager-speed travel 143,894,674 yr

Multi-band Host Photometry — 6 bands

Astrometric Data

Parallax

0.375 mas

Total Proper Motion

10.986 mas/yr

PM Right Ascension

-10.92 mas/yr

PM Declination

1.23 mas/yr

Galactic Cartesian (pc)

x = -0.472 · y = 0.106 · z = -0.875

Equatorial (J2000)

RA 167.32792° · Dec -61.09526°

Galactic ℓ, b

290.907° · -0.631°

Ecliptic λ, β

208.015° · -57.711°

HTM-20 index

-1994057051