Key parameters at a glance
- A radius of 5.98 Earth radii
- A mass of 29.88 Earth masses
- Surface gravity around 0.84 g
- Semi-major axis 2.4400 AU
- Distance from Earth 8,936.67 light-years
- Earth Similarity Index 0.427
- Travel time at Voyager 1 speed 157,598,244 years
KMT-2019-BLG-1216L b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#286of 574
top 49.7%
This planet
5.98R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | KMT-2019-BLG-1216L b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 5.98 | 11.21 |
| Mass (M⊕) | 1.00 | 29.88 | 317.83 |
| Density (g/cm³) | 5.51 | 0.77 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.84 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 29.876 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)
0.427
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Jung et al. 2023Instrument
18k Mosaic CCD camera
Publication
2023-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 2023 at KMTNet (12 shown).
Host System: KMT-2019-BLG-1216L
Spectral Class
Unknown
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.390 M☉
Metallicity [Fe/H]
—
Similar Worlds
MOA-2011-BLG-028L b
Neptune-like · Unknown
Radius 5.99 R⊕ · 24,070.3 ly
KMT-2021-BLG-0320L b
Neptune-like · Unknown
Radius 6.20 R⊕ · 22,667.8 ly
MOA-2015-BLG-337L b
Neptune-like · Unknown
Radius 6.42 R⊕ · 23,157.1 ly
KMT-2017-BLG-0165L b
Neptune-like · Unknown
Radius 6.45 R⊕ · 14,774.9 ly
KMT-2021-BLG-0192L b
Neptune-like · Unknown
Radius 6.56 R⊕ · 16,699.2 ly
KMT-2017-BLG-1057L b
Neptune-like · Unknown
Radius 5.19 R⊕ · 21,200.1 ly