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Exoplanet 61 Cygni A b
(Unconfirmed Exoplanet)
61 Cygni A b is an unconfirmed exoplanet detected around star 61 Cygni A. More observations are needed to confirm its existence.
Sun distance
11 light years
11 light years
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61 Cygni A b
Exoplanet, gas giant
Star: 61 Cygni A
Distance from the star: 1 AUBasic characteristic
Mass: 2543.256 M Earth
| 8.0027 M Jupiter
Exoplanet mass
Exoplanet 61 Cygni A b has 2543.256 Earth masses (or 8.0027 Jupiter masses).
The mass of an exoplanet is one of the most important characteristics for understanding what kind of world it is — whether it’s small and rocky like Earth or large and gaseous like Jupiter. Mass provides key information about the planet’s composition, gravity, and formation history...
More about Exoplanet mass in StellarGuide
Size: 11.433 R Earth | 1 R Jupiter
Density: 9383 kg/m3 | 170.20 % Earth
Temperature: 282 K | 8.85 °C
Year of discovery: 2026 (radial velocity)
Other designations of this exoplanet
Gliese 820 A/B b, Struve 2758 b, ADS 14636 b, V1803 Cygni b, GCTP 5077.00 b, V1803 Cygni b, HD 201091 b, HIP 104214 b, HR 8085 b, BD+38°4343 b, LHS 62 b, SAO 7091 b, 61 Cyg b
Gliese 820 A/B b, Struve 2758 b, ADS 14636 b, V1803 Cygni b, GCTP 5077.00 b, V1803 Cygni b, HD 201091 b, HIP 104214 b, HR 8085 b, BD+38°4343 b, LHS 62 b, SAO 7091 b, 61 Cyg b
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61 Cygni system structure
Exoplanet 61 Cygni A b orbits star 61 Cygni A, which has lower mass than Sun. It is the only known exoplanet orbiting this star
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61 Cygni A | ||||||||
| 61 Cygni A b unconfirmed |
1 AU | 2543.3 M⊕ | 11.4 R⊕ | - | |||||
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61 Cygni B | 24.272 AU | |||||||
Comparison
When comparing to the Solar system planets, 61 Cygni A b has 8 times the mass of Jupiter
| Mercury | Venus | Earth | Mars | Jupiter | Saturn | Uranus | Neptune | ||
|---|---|---|---|---|---|---|---|---|---|
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Mass | 46241.02 | 3120.56 | 2543.26 | 23120.51 | 8 | 26.71 | 174.2 | 147.86 |
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Size | 29.86 | 12.03 | 11.43 | 21.57 | 1.02 | 1.26 | 2.86 | 3.01 |
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Density | 1.74 | 1.79 | 1.7 | 2.3 | 7.54 | 13.47 | 7.46 | 5.43 |
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Distance | 2.56 | 1.38 | 1 | 0.66 | 0.19 | 0.1 | 0.05 | 0.03 |
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Temperature | 0.64 | 0.38 | 0.98 | 1.36 | 1.73 | 2.12 | 3.62 | 3.92 |
Habitability
Habitable zone of the star: 0.39 - 0.55 AU
The planet seems to be close to the outer edge of the habitable zone. It is probably very cold, but environment with higher temperatures might be possible.
The planet is probably a gas giant and has no surface, however life could still be possible on the potential moons orbiting it.