Discovery Method
Transit
Consistent across records
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ExoplanetDetail
LP 791-18 d
Host star LP 791-18 • 1.03 R⊕ • 2.75 d orbit
Records
2
archive rows
Discovery
2023
Transit
Radius
1.03 R⊕
default parameter set
Mass
0.91 M⊕
default parameter set
LP 791-18
temperature unconstrained
Canonical Summary
Adopted planet values from the default parameter set
Values come from the archive's default parameter set. Missing values stay missing. Ranges and counts describe all source rows.
Selected source: Greklek-McKeon et al. 2025
Host Star
LP 791-18
Stable across source rows
Discovery Year
2023
Stable across source rows
Orbital Period
2.75 day
2.75 to 2.75
Semi-Major Axis
0.02 au
single adopted value
Radius
1.03 Rearth
single adopted value
Mass
0.91 Mearth
0.90 to 0.91
Density
4.56 g/cm**3
single adopted value
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 1.03 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
LP 791-18 d
1.03 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
2
Refs
2
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusstable
Massdisputed
Eq. Tempstable
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2023 | Transit | Spitzer Space Telescope | 0.85 m Spitzer Space Telescope | 2.75 day | 1.03 Rearth | 0.91 Mearth | — | Greklek-McKeon et al. 2025 |
| 2023 | Transit | Spitzer Space Telescope | 0.85 m Spitzer Space Telescope | 2.75 day | 1.03 Rearth | 0.90 Mearth | 395.5 K | Peterson et al. 2023 |