Key parameters at a glance
- A radius of 12.40 Earth radii
- A mass of 3,337.10 Earth masses
- Surface gravity around 21.70 g
- An orbital period of 10,037.500 days
- Semi-major axis 2.6000 AU
- Equilibrium temperature 370 K (97 °C)
- Distance from Earth 75.34 light-years
- Earth Similarity Index 0.398
- Travel time at Voyager 1 speed 1,328,657 years
CFBDSIR J145829+101343 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1298of 1771
top 73.2%
This planet
12.40R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | CFBDSIR J145829+101343 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.40 | 11.21 |
| Mass (M⊕) | 1.00 | 3,337.10 | 317.83 |
| Density (g/cm³) | 5.51 | 9.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 21.70 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3,337.100 M⊕ | Direct mass measurement (not derived). |
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 27.48 Earth years at a mean orbital distance of 2.6000 AU.
Eq. Temperature
370K
(97 °C)
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.398
0 = alien, 1 = Earth-identical
Insufficient insolation data — liquid water is physically possible with adequate atmospheric pressure.
Discovery Paper
Primary reference
Liu et al. 2011Instrument
NIRC2 Camera
Publication
2011-10
Observation locale
Ground
Discovery cohort
Planets confirmed in 2011 at W. M. Keck Observatory (12 shown).
Host System: CFBDSIR J145829+101343
Spectral Class
L-type ultra-cool dwarf
Effective Temperature
581 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
—
Stellar Mass
0.021 M☉
Metallicity [Fe/H]
—