Uncommon exoplanet 29 EP
Kepler-221 c
RA 296.6547° · Dec 46.8352° · exoplanet
Score breakdown
· 5 badgesUncommon 33 pts → Rare
- Distant (>1000 ly) +10
- Multi-planet system +6
- Confirmed exoplanet +5
- Sub-Neptune +5
- Found by Kepler +3
Total score 29
4 more points to reach Rare.
Badges
- Confirmed exoplanet · +5
- Sub-Neptune · +5
- Multi-planet system · +6
- Found by Kepler · +3
- Distant (>1000 ly) · +10
Trivia
Could we get there?
- Verdict. Impossible with our current technology — and the next millennium of it.
Getting there
- Aboard Voyager 1. ≈ 22.1 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 2 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 12.6 thousand years in a starship at a tenth of light speed.
- Distance. 1256 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 770.
Saying hello
- Say hello. A radio message and its reply would take 2513 years round-trip.
Standing on it
- A year here. A full year lasts just 5.7 Earth days.
By the numbers
- Size. About 2.9× the width of Earth.
- Volume. About 25.2 Earths could fit inside it.
- Mass. About 9.3× the mass of Earth.
- Your weight. You'd weigh about 1.1× your Earth weight standing here.
- Temperature. Around 587°C — hotter than a self-cleaning oven.
How we found it
- Discovery. Found by Kepler using the transit method.
Cosmic context
- Crowded system. One of at least 4 planets orbiting its star.
Properties
- density gcc
- 1.94
- discovery facility
- Kepler
- discovery method
- Transit
- dist ly
- 1256.454
- eccentricity
- 0
- eq temp k
- 860
- insolation
- 119.836
- mass earth
- 9.3
- name
- Kepler-221 c
- orbital period days
- 5.6906
- radius earth
- 2.93
- sys num planets
- 4