Key parameters at a glance
- A radius of 4.19 Earth radii
- A mass of 16.35 Earth masses
- Surface gravity around 0.93 g
- Semi-major axis 2.8600 AU
- Distance from Earth 17,905.96 light-years
- Earth Similarity Index 0.530
- Travel time at Voyager 1 speed 315,771,665 years
KMT-2023-BLG-1896L b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#520of 574
top 90.4%
This planet
4.19R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | KMT-2023-BLG-1896L b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.19 | 11.21 |
| Mass (M⊕) | 1.00 | 16.35 | 317.83 |
| Density (g/cm³) | 5.51 | 1.22 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.93 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 16.350 M⊕ | Direct mass measurement (not derived). |
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
Orbital period for this planet has not yet been measured.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.530
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Han et al. 2025Instrument
18k Mosaic CCD camera
Publication
2025-02
Observation locale
Ground
Discovery cohort
Planets confirmed in 2025 at KMTNet (12 shown).
Host System: KMT-2023-BLG-1896L
Spectral Class
K-type orange
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.720 M☉
Metallicity [Fe/H]
—
Similar Worlds
Kepler-1993 b
Neptune-like · K-type orange
Radius 4.15 R⊕ · 3,365.6 ly
TOI-1272 b
Neptune-like · K-type orange
Radius 4.13 R⊕ · 448.7 ly
HD 77338 b
Neptune-like · K-type orange
Radius 4.12 R⊕ · 149.8 ly
Kepler-815 b
Neptune-like · K-type orange
Radius 4.11 R⊕ · 4,107.2 ly
HD 192310 b
Neptune-like · K-type orange
Radius 4.27 R⊕ · 28.7 ly
HD 95338 b
Neptune-like · K-type orange
Radius 4.27 R⊕ · 120.7 ly