Anomaly exoplanet 69 EP
55 Cnc e
RA 133.1468° · Dec 28.3298° · exoplanet
Score breakdown
· 7 badgesAnomaly 95 pts → Mythic
- Lava world +14
- Ultra-short period +14
- Richly packed system +14
- Super-Earth +8
- Blasted by starlight +8
- Multi-planet system +6
- Confirmed exoplanet +5
Total score 69
26 more points to reach Mythic.
Badges
- Confirmed exoplanet · +5
- Super-Earth · +8
- Lava world · +14
- Ultra-short period · +14
- Multi-planet system · +6
- Richly packed system · +14
- Blasted by starlight · +8
Trivia
What makes it special
- Lava world. Its surface is likely an ocean of molten rock.
- 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. ≈ 721.3 thousand years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 64.1 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 410 years in a starship at a tenth of light speed.
- Distance. 41 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1985.
Saying hello
- Say hello. A radio message and its reply would take 82.1 years round-trip.
Standing on it
- A year here. A full year lasts just 0.7 Earth days.
By the numbers
- Size. About 1.9× the width of Earth.
- Volume. About 6.6 Earths could fit inside it.
- Mass. About 8× the mass of Earth.
- Your weight. You'd weigh about 2.3× your Earth weight standing here.
- Temperature. Around 1685°C — hotter than a self-cleaning oven.
How we found it
- Discovery. Found by McDonald Observatory using the radial velocity method.
Cosmic context
- Crowded system. One of at least 7 planets orbiting its star.
Properties
- density gcc
- 6.66
- discovery facility
- McDonald Observatory
- discovery method
- Radial Velocity
- dist ly
- 41.0484
- eccentricity
- 0.05
- eq temp k
- 1958
- insolation
- 2657.8322
- mass earth
- 7.99
- name
- 55 Cnc e
- orbital period days
- 0.7365
- radius earth
- 1.875
- sys num planets
- 7