Key parameters at a glance
- A radius of 13.70 Earth radii
- A mass of 381.39 Earth masses
- Surface gravity around 2.03 g
- Semi-major axis 2.0000 AU
- Distance from Earth 23,809.39 light-years
- Earth Similarity Index 0.323
- Travel time at Voyager 1 speed 419,878,534 years
KMT-2019-BLG-0578L b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#554of 1771
top 31.2%
This planet
13.70R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | KMT-2019-BLG-0578L b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.70 | 11.21 |
| Mass (M⊕) | 1.00 | 381.39 | 317.83 |
| Density (g/cm³) | 5.51 | 0.82 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.03 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 381.394 M⊕ | Direct mass measurement (not derived). |
Percentile among Gas Giant 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)
0.323
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Yang et al. 2025Instrument
18k Mosaic CCD camera
Publication
2025-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2025 at KMTNet (12 shown).
Host System: KMT-2019-BLG-0578L
Spectral Class
Unknown
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.280 M☉
Metallicity [Fe/H]
—
Similar Worlds
K2-2016-BLG-0005L b
Gas Giant · Unknown
Radius 13.70 R⊕ · 16,960.1 ly
KMT-2019-BLG-1339L b
Gas Giant · Unknown
Radius 13.70 R⊕ · 19,960.7 ly
UKIRT-2017-BLG-001L b
Gas Giant · Unknown
Radius 13.70 R⊕ · 20,547.8 ly
KMT-2018-BLG-1996L b
Gas Giant · Unknown
Radius 13.70 R⊕ · 19,275.8 ly
KMT-2019-BLG-2783L b
Gas Giant · Unknown
Radius 13.70 R⊕ · 19,275.8 ly
KMT-2018-BLG-2602L b
Gas Giant · Unknown
Radius 13.70 R⊕ · 14,057.3 ly