About KIC 7917485 b
KIC 7917485 b is a rare exoplanet. It lies about 4,510.4 light-years from Earth, spans roughly 12.4 Earth radii, weighs about 3,750.39 Earth masses and completes an orbit every 840 days.
Packed denser than solid iron.
Rare exoplanet 40 EP
KIC 7917485 b
RA 299.4346° · Dec 43.6326° · exoplanet
Score breakdown
· 5 badgesRare 46 pts → Epic
- Denser than iron +18
- Distant (>1000 ly) +10
- Confirmed exoplanet +5
- Gas giant +4
- Found by Kepler +3
Total score 40
6 more points to reach Epic.
Badges
- Confirmed exoplanet · +5
- Gas giant · +4
- Denser than iron · +18
- Found by Kepler · +3
- Distant (>1000 ly) · +10
Trivia
What makes it special
- Heavyweight. Packed denser than solid iron.
Could we get there?
- Verdict. Impossible with our current technology — and the next millennium of it.
Getting there
- Aboard Voyager 1. ≈ 79.3 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 7 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 45.1 thousand years in a starship at a tenth of light speed.
- Distance. 4510 light-years from Earth.
Look-back time
- Look-back time. Its light left before the last ice age ended.
Saying hello
- Say hello. A radio message and its reply would take 9021 years round-trip.
Standing on it
- A year here. A full year lasts about 2.3 Earth years.
By the numbers
- Size. About 12.4× the width of Earth.
- Volume. About 1907 Earths could fit inside it.
- Mass. Roughly 3750× Earth's mass — about 11.8 Jupiters.
- Your weight. You'd weigh about 24.4× your Earth weight standing here.
- Density. Denser than solid iron.
How we found it
- Discovery. Found by Kepler using the pulsation timing variations method.
Properties
- density gcc
- 10.8
- discovery facility
- Kepler
- discovery method
- Pulsation Timing Variations
- dist ly
- 4510.3787
- eccentricity
- 0.15
- mass earth
- 3750.394
- name
- KIC 7917485 b
- orbital period days
- 840
- radius earth
- 12.4
- sys num planets
- 1
How to see it
Like any astronomical target, KIC 7917485 b is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.
Why KIC 7917485 b is a rare exoplanet
KIC 7917485 b scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 6 points would lift it into a rarer tier.
That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Denser than iron, Found by Kepler and Distant (>1000 ly) — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.