Key parameters at a glance
- A radius of 12.50 Earth radii
- A mass of 2,809.60 Earth masses
- Surface gravity around 17.98 g
- Semi-major axis 15.9100 AU
- Distance from Earth 25,440.17 light-years
- Earth Similarity Index 0.399
- Travel time at Voyager 1 speed 448,637,338 years
KMT-2017-BLG-2197L b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1235of 1771
top 69.7%
This planet
12.50R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | KMT-2017-BLG-2197L b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.50 | 11.21 |
| Mass (M⊕) | 1.00 | 2,809.60 | 317.83 |
| Density (g/cm³) | 5.51 | 7.90 | 1.33 |
| Surface Gravity (g) | 1.00 | 17.98 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 2,809.603 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)
0.399
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Han et al. 2025Instrument
18k Mosaic CCD camera
Publication
2025-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 2025 at KMTNet (12 shown).
Host System: KMT-2017-BLG-2197L
Spectral Class
Unknown
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.360 M☉
Metallicity [Fe/H]
—
Similar Worlds
OGLE-2013-BLG-0911L b
Gas Giant · Unknown
Radius 12.50 R⊕ · 10,502.2 ly
KMT-2025-BLG-0121L b
Gas Giant · Unknown
Radius 12.60 R⊕ · 20,221.7 ly
OGLE-2017-BLG-1375L b
Gas Giant · Unknown
Radius 12.40 R⊕ · 12,817.9 ly
KMT-2020-BLG-0202L b
Gas Giant · Unknown
Radius 12.40 R⊕ · 12,524.4 ly
OGLE-2016-BLG-1266L b
Gas Giant · Unknown
Radius 12.40 R⊕ · 10,045.6 ly
MOA-2012-BLG-006L b
Gas Giant · Unknown
Radius 12.60 R⊕ · 17,286.3 ly