Confirmed Exoplanet Discovered 2023

WISE J033605.05-014350.4 b

A gas giant orbiting the l-type ultra-cool dwarf WISE J033605.05-014350.4, located approximately Distance pending from Earth.

Key parameters at a glance

  • A radius of 12.60 Earth radii
  • A mass of 2,622.08 Earth masses
  • Surface gravity around 16.52 g
  • An orbital period of 2,560.000 days
  • Semi-major axis 0.9700 AU
  • Equilibrium temperature 325 K (52 °C)
  • Earth Similarity Index 0.470

WISE J033605.05-014350.4 b Planet Profile

Physical Specs

Radius
12.60 R⊕
Radius (Jupiter)
1.120 R♃
Mass
2,622.08 M⊕
Mass (Jupiter)
8.250 M♃
Density
7.20 g/cm³
Surface Gravity
16.52 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.470
HZ Position Unknown
Controversial No

Discovery

Year 2023
Method Imaging
Facility James Webb Space Telescope (JWST)
Telescope 6.5 m James Webb Space Telescope

Size rank in cohort

Rank by radius

#1179of 1771

top 66.5%

This planet

12.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth WISE J033605.05-014350.4 b Jupiter
Radius (R⊕)1.0012.6011.21
Mass (M⊕)1.002,622.08317.83
Density (g/cm³)5.517.201.33
Surface Gravity (g)1.0016.522.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 2,622.084 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 12.600 R⊕ · percentile 31 / cohort 1771
Mass 2,622.084 M⊕ · percentile 84 / cohort 1747
Orbital period 2,560.00 d · percentile 87 / cohort 1533
ESI 0.470 · percentile 100 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
2,560.000 days
Semi-major axis
0.9700 AU
Eccentricity
Inclination
°

Year Length

A year here lasts about 7.01 Earth years at a mean orbital distance of 0.9700 AU.

Eq. Temperature

325K

(52 °C)

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.470

0 = alien, 1 = Earth-identical

Insufficient insolation data — liquid water is physically possible with adequate atmospheric pressure.

Discovery Paper

Primary reference

Calissendorff et al. 2023

Instrument

NIRCam

Publication

2023-04

Observation locale

Space

Host System: WISE J033605.05-014350.4

Spectral Class

L-type ultra-cool dwarf

Effective Temperature

415 K — cooler than the Sun (5,778 K)

Estimated Age

3.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

Stellar Mass

0.013 M☉

Metallicity [Fe/H]

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