Key parameters at a glance
- A radius of 13.40 Earth radii
- A mass of 664.26 Earth masses
- Surface gravity around 3.70 g
- Semi-major axis 2.1400 AU
- Distance from Earth 22,961.38 light-years
- Earth Similarity Index 0.368
- Travel time at Voyager 1 speed 404,923,956 years
KMT-2017-BLG-2509L b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#730of 1771
top 41.2%
This planet
13.40R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | KMT-2017-BLG-2509L b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.40 | 11.21 |
| Mass (M⊕) | 1.00 | 664.26 | 317.83 |
| Density (g/cm³) | 5.51 | 1.52 | 1.33 |
| Surface Gravity (g) | 1.00 | 3.70 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 664.261 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)
0.368
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Han et al. 2021Instrument
18k Mosaic CCD camera
Publication
2021-11
Observation locale
Ground
Discovery cohort
Planets confirmed in 2021 at KMTNet (11 shown).
Host System: KMT-2017-BLG-2509L
Spectral Class
Unknown
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.460 M☉
Metallicity [Fe/H]
—
Similar Worlds
OGLE-2012-BLG-0358L b
Gas Giant · Unknown
Radius 13.40 R⊕ · 5,740.3 ly
KMT-2018-BLG-0247L b
Gas Giant · Unknown
Radius 13.40 R⊕ · 22,048.1 ly
KMT-2019-BLG-0298L b
Gas Giant · Unknown
Radius 13.40 R⊕ · 21,885.1 ly
KMT-2017-BLG-1038L b
Gas Giant · Unknown
Radius 13.40 R⊕ · 19,569.4 ly
OGLE-2018-BLG-1011L b
Gas Giant · Unknown
Radius 13.50 R⊕ · 23,157.1 ly
OGLE-2017-BLG-1140L b
Gas Giant · Unknown
Radius 13.50 R⊕ · —