Uncommon exoplanet 30 EP
K2-138 e
RA 348.9490° · Dec -10.8497° · exoplanet
Score breakdown
· 4 badgesUncommon 33 pts → Rare
- Richly packed system +14
- Multi-planet system +6
- Confirmed exoplanet +5
- Sub-Neptune +5
Total score 30
3 more points to reach Rare.
Badges
- Confirmed exoplanet · +5
- Sub-Neptune · +5
- Multi-planet system · +6
- Richly packed system · +14
Trivia
What makes it special
- Packed system. Crammed into a system of five or more planets.
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 11.6 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 1 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 6607 years in a starship at a tenth of light speed.
- Distance. 661 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1365.
Saying hello
- Say hello. A radio message and its reply would take 1321 years round-trip.
Standing on it
- A year here. A full year lasts just 8.3 Earth days.
By the numbers
- Size. About 3.4× the width of Earth.
- Volume. About 39 Earths could fit inside it.
- Mass. About 13× the mass of Earth.
- Your weight. You'd weigh about 1.1× your Earth weight standing here.
- Temperature. Around 484°C — hotter than a self-cleaning oven.
How we found it
- Discovery. Found by K2 using the transit method.
Cosmic context
- Crowded system. One of at least 6 planets orbiting its star.
Properties
- density gcc
- 1.8
- discovery facility
- K2
- discovery method
- Transit
- dist ly
- 660.7431
- eccentricity
- 0.077
- eq temp k
- 757
- insolation
- 91.1
- mass earth
- 12.97
- name
- K2-138 e
- orbital period days
- 8.2615
- radius earth
- 3.39
- sys num planets
- 6