Rare exoplanet 45 EP
Kepler-68 d
RA 291.0323° · Dec 49.0402° · exoplanet
Score breakdown
· 4 badgesRare 46 pts → Epic
- In the habitable zone +30
- Multi-planet system +6
- Confirmed exoplanet +5
- Gas giant +4
Total score 45
1 more point to reach Epic.
Badges
- Confirmed exoplanet · +5
- In the habitable zone · +30
- Gas giant · +4
- Multi-planet system · +6
Trivia
What makes it special
- Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist.
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 8.3 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 734.2 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 4702 years in a starship at a tenth of light speed.
- Distance. 470 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1556.
Saying hello
- Say hello. A radio message and its reply would take 940 years round-trip.
Standing on it
- A year here. A full year lasts just 633 Earth days.
By the numbers
- Size. About 13.9× the width of Earth.
- Volume. About 2686 Earths could fit inside it.
- Mass. Roughly 267× Earth's mass — about 0.8 Jupiters.
- Your weight. You'd weigh about 1.4× your Earth weight standing here.
- Density. Less dense than water — drop it in a big enough ocean and it would float.
- Temperature. A surprisingly temperate -12°C average.
How we found it
- Discovery. Found by W. M. Keck Observatory using the radial velocity method.
Cosmic context
- Crowded system. One of at least 4 planets orbiting its star.
Properties
- density gcc
- 0.546
- discovery facility
- W. M. Keck Observatory
- discovery method
- Radial Velocity
- dist ly
- 470.2061
- eccentricity
- 0.102
- eq temp k
- 260.75
- habitable zone
- yes
- insolation
- 0.7889
- mass earth
- 267
- name
- Kepler-68 d
- orbital period days
- 632.62
- radius earth
- 13.9
- sys num planets
- 4