Mini-Neptune · DMPP-1

DMPP-1 b

ExoplanetsDiscovered 2019

Scientific overview

DMPP-1 b is a mini-neptune orbiting DMPP-1, completing an orbit every 18 days, about 204 light-years from Earth. It was discovered in 2019 using the radial velocity method.

Host star

DMPP-1

Spectral type

F8 V

Temperature

6,196 K

Mass

1.21 M☉

Planetary system — DMPP-1 system

View the DMPP-1 system (4 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
DMPP-1 dRadial Velocity · 2019	Super-Earth	2.02	3.1417	204
DMPP-1 eRadial Velocity · 2019	Super-Earth	1.86	5.516	204
DMPP-1 cRadial Velocity · 2019	Mini-Neptune	3.31	10.03	204
DMPP-1 bRadial Velocity · 2019	Mini-Neptune	4.26	17.812	204

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2019

Discovered at

La Silla Observatory

Knowledge connections

OrbitsDMPP-1
Member of systemDMPP-1 system
Discovered by methodRadial Velocity Method
Discovered atLa Silla Observatory
Catalogued inNASA Exoplanet Archive

Quick facts

Class: Mini-Neptune
Host star: DMPP-1
Discovery method: Radial Velocity Method
Discovery year: 2019
Orbital period: 17.812 d
Semi-major axis: 0.1423 AU
Eccentricity: 0.2
Radius: 4.26 R⊕
Mass: 16.8 M⊕
Density: 1.20 g/cm³ · derived
Equilibrium temp.: 877 K
Insolation: 103.07 S⊕
Distance: 204 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 density1.20 g/cm³derived
Formula & inputs
Formula: ρ = M / (4⁄3·π·r³) (v1.0.0, impl v1.0.0)
Inputs:
- massEarth = 16.8 M⊕ · NASA
- radiusEarth = 4.26 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.