Key parameters at a glance

A radius of 15.28 Earth radii
A mass of 441.77 Earth masses
Surface gravity around 1.89 g
An orbital period of 1.212 days
Semi-major axis 0.0238 AU
Equilibrium temperature 2,212 K (1939 °C)
Distance from Earth 922.50 light-years
Earth Similarity Index 0.052
Travel time at Voyager 1 speed 16,268,231 years

OGLE-TR-56 b Planet Profile

Physical Specs

Radius

15.28 R⊕

Radius (Jupiter)

1.363 R♃

Mass

441.77 M⊕

Mass (Jupiter)

1.390 M♃

Density

0.68 g/cm³

Surface Gravity

1.89 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.052

HZ Position Unknown

Controversial No

Discovery

Year 2002

Method Transit

Facility OGLE

Telescope 1.3 m Warsaw University Telescope

Size rank in cohort

Rank by radius

#209of 1771

top 11.7%

This planet

15.28R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WTS-2 b 15.28 R⊕ TOI-3894 b 15.28 R⊕ TOI-2818 b 15.28 R⊕

Metric	Earth	OGLE-TR-56 b	Jupiter
Radius (R⊕)	1.00	15.28	11.21
Mass (M⊕)	1.00	441.77	317.83
Density (g/cm³)	5.51	0.68	1.33
Surface Gravity (g)	1.00	1.89	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	441.770 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 1425441246

Gaia DR2

Gaia DR2 4056326681029056896

Gaia DR3

Gaia DR3 4056326681029056896

System

OGLE-TR-56

Percentile among Gas Giant cohort

Radius 15.278 R⊕ · percentile 88 / cohort 1771

Mass 441.770 M⊕ · percentile 45 / cohort 1747

Orbital period 1.21 d · percentile 1 / cohort 1533

Distance 282.84 pc · percentile 58 / cohort 1759

ESI 0.052 · percentile 5 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1.212 days

Semi-major axis

0.0238 AU

Eccentricity

0.000

Inclination

77.60 °

Year Length

A year here lasts approximately 1.21 Earth days (0.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0238 AU.

Transit Fingerprint

Depth

0.917 %

Duration

2.203 h

Impact parameter b

0.817

Rp / R★

0.102700

Transit midpoint (BJD)

2,454,995.8109

Photometric dip

Transit produces a flux drop of 9,168 ppm lasting ≈ 2.20 h.

Extended Orbital Architecture

Planet / star radius ratio

0.102700

Semi-major axis / stellar radius

3.740

Impact parameter (b)

0.817

RV semi-amplitude (K)

225.000 m/s

Transit mid-time (BJD)

2,454,995.8109

Angular separation (arcsec)

0.08430

Eq. Temperature

2,212K

(1939 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.052

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

Konacki et al. 2003

Instrument

OGLE CCD Array

Publication

2003-01

Observation locale

Ground

Host System: OGLE-TR-56

Spectral Class

F-type yellow-white

Effective Temperature

6,050 K — hotter than the Sun (5,778 K)

Estimated Age

3.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.363 R☉

Stellar Mass

1.228 M☉

Metallicity [Fe/H]

0.25

Extended Stellar Properties

Surface gravity (log g)

4.258 dex

Stellar density

0.361 g/cm³

Systemic radial velocity

-48.32 km/s

Rotational v·sin i

3.20 km/s

Metallicity ratio

[Fe/H]

Distance

282.84 parsec

Light-years 922.50 ly

V-band magnitude

15.30 mag

Voyager-speed travel 16,268,231 yr

Astrometric Data

Parallax

3.536 mas

Total Proper Motion

0.633 mas/yr

PM Right Ascension

0.60 mas/yr

PM Declination

-0.19 mas/yr

Galactic Cartesian (pc)

x = -0.013 · y = -0.870 · z = -0.493

Equatorial (J2000)

RA 269.14796° · Dec -29.53922°

Galactic ℓ, b

0.705° · -2.365°

Ecliptic λ, β

269.251° · -6.102°

HTM-20 index

1982250337

Observation Record

Photometric series

RV measurements

Archive notes