Key parameters at a glance
- A radius of 12.00 Earth radii
- A mass of 7,532.57 Earth masses
- Surface gravity around 52.31 g
- An orbital period of 760.000 days
- Semi-major axis 1.6130 AU
- Earth Similarity Index 0.271
Circumbinary planet
MXB 1658-298 b orbits a binary-star pair rather than a single host — a minority architecture in the confirmed catalogue.
MXB 1658-298 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1494of 1771
top 84.3%
This planet
12.00R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | MXB 1658-298 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.00 | 11.21 |
| Mass (M⊕) | 1.00 | 7,532.57 | 317.83 |
| Density (g/cm³) | 5.51 | 24.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 52.31 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 7,532.571 M⊕ | Direct mass measurement (not derived). |
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 2.08 Earth years at a mean orbital distance of 1.6130 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.271
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Jain et al. 2017Instrument
Multiple Instruments
Publication
2017-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2017 at Multiple Observatories (12 shown).
Host System: MXB 1658-298
Spectral Class
Unknown
Effective Temperature
—
Estimated Age
—
Stellar Radius
—
Stellar Mass
1.980 M☉
Metallicity [Fe/H]
—
Similar Worlds
2MASS J11011926-7732383 b
Gas Giant · Unknown
Radius 11.90 R⊕ · —
UCAC4 328-061594 b
Gas Giant · Unknown
Radius 12.10 R⊕ · 130.2 ly
KMT-2021-BLG-1770L b
Gas Giant · Unknown
Radius 12.10 R⊕ · 22,570.0 ly
ITG 15 b
Gas Giant · Unknown
Radius 12.10 R⊕ · 444.8 ly
KMT-2023-BLG-1743L b
Gas Giant · Unknown
Radius 12.10 R⊕ · 23,254.9 ly
Luhman 16 b
Gas Giant · Unknown
Radius 11.90 R⊕ · —