Gas giant · DP Leo

DP Leo b

ExoplanetsDiscovered 2009

Scientific overview

DP Leo b is a gas giant orbiting DP Leo, completing an orbit every 10220 days, about 997 light-years from Earth. It was discovered in 2009 using the eclipse timing variations.

Host star

DP Leo

Temperature

13,500 K

Mass

0.69 M☉

Discovery and detection

Detection method

Eclipse Timing Variations

Discovery year

2009

Knowledge connections

OrbitsDP Leo
Discovered by methodEclipse Timing Variations
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Gas giant
Host star: DP Leo
Discovery method: Eclipse Timing Variations
Discovery year: 2009
Orbital period: 10220 d
Semi-major axis: 8.19 AU
Eccentricity: 0.39
Radius: 12.7 R⊕
Mass: 1995.89 M⊕
Density: 5.37 g/cm³ · derived
Equilibrium temp.: 24 K
Distance: 997 ly

Density is derived from the archive mass and radius via ρ = M / (4⁄3·π·r³); all other values are catalogued measurements.

Derived values

Computed from source-backed inputs via standard formulae — not observations. Every input and constant is traced below.

Bulk density5.37 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 1995.89 M⊕ · NASA
- radiusEarth = 12.7 R⊕ · NASA
Assumptions: M⊕ = 5.972e+24 kg, R⊕ = 6371000 m (IAU 2015 B3 nominal); Assumes a uniform sphere.
Limitations: Withheld above 30 g/cm³ (inconsistent mass/radius inputs).; Archive mass/radius carry no propagated uncertainty here.
Uncertainty: not propagated (inputs carry no catalogued uncertainty)
Computed as of 2026-06-29.

Quality & authority

Partial

Unreviewed

Description: Complete
Source coverage: Partial
Relationship coverage: Complete
Review coverage: None
Citation coverage: None
Image coverage: Not applicable

Data from the NASA Exoplanet Archive. See source quality.