Key parameters at a glance
- A radius of 9.60 Earth radii
- A mass of 66.74 Earth masses
- Surface gravity around 0.72 g
- Semi-major axis 2.8000 AU
- Distance from Earth 21,526.30 light-years
- Earth Similarity Index 0.314
- Travel time at Voyager 1 speed 379,616,209 years
KMT-2021-BLG-0240L b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#33of 574
top 5.6%
This planet
9.60R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | KMT-2021-BLG-0240L b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 9.60 | 11.21 |
| Mass (M⊕) | 1.00 | 66.74 | 317.83 |
| Density (g/cm³) | 5.51 | 0.42 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.72 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 66.744 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)
0.314
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Han et al. 2022Instrument
18k Mosaic CCD camera
Publication
2022-08
Observation locale
Ground
Discovery cohort
Planets confirmed in 2022 at KMTNet (12 shown).
Host System: KMT-2021-BLG-0240L
Spectral Class
Unknown
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.560 M☉
Metallicity [Fe/H]
—
Similar Worlds
MOA-2009-BLG-319L b
Neptune-like · Unknown
Radius 9.64 R⊕ · 22,994.0 ly
OGLE-2018-BLG-1212L b
Neptune-like · Unknown
Radius 9.32 R⊕ · 5,055.4 ly
KMT-2021-BLG-1372L b
Neptune-like · Unknown
Radius 9.12 R⊕ · 19,471.5 ly
SWEEPS-4 b
Neptune-like · Unknown
Radius 9.08 R⊕ · 27,723.3 ly
KMT-2019-BLG-1042L b
Neptune-like · Unknown
Radius 9.05 R⊕ · 21,526.3 ly
KMT-2018-BLG-0748L b
Neptune-like · Unknown
Radius 9.01 R⊕ · 23,809.4 ly