About Kepler-37 b
Kepler-37 b is an uncommon exoplanet. It lies about 208.5 light-years from Earth, has an equilibrium temperature near 718 K, spans roughly 0.31 Earth radii and weighs about 0.79 Earth masses.
Packed denser than solid iron.
Uncommon exoplanet 32 EP
Kepler-37 b
RA 284.0593° · Dec 44.5184° · exoplanet
Score breakdown
· 4 badgesUncommon 33 pts → Rare
- Denser than iron +18
- Multi-planet system +6
- Confirmed exoplanet +5
- Found by Kepler +3
Total score 32
1 more point to reach Rare.
Badges
- Confirmed exoplanet · +5
- Denser than iron · +18
- Multi-planet system · +6
- Found by Kepler · +3
Trivia
What makes it special
- Heavyweight. Packed denser than solid iron.
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 3.7 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 325.5 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 2085 years in a starship at a tenth of light speed.
- Distance. 208 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1818.
Saying hello
- Say hello. A radio message and its reply would take 417 years round-trip.
Standing on it
- A year here. A full year lasts just 13.4 Earth days.
By the numbers
- Size. Around 31% of Earth's width.
- Mass. About 0.8× the mass of Earth.
- Your weight. You'd weigh about 8.2× your Earth weight standing here.
- Density. Denser than solid iron.
- Temperature. Around 445°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
- 140
- discovery facility
- Kepler
- discovery method
- Transit
- dist ly
- 208.4812
- eccentricity
- 0.098
- eq temp k
- 718
- insolation
- 44.5
- mass earth
- 0.79
- name
- Kepler-37 b
- orbital period days
- 13.367
- radius earth
- 0.3098
- sys num planets
- 4
How to see it
Like any astronomical target, Kepler-37 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 Kepler-37 b is an uncommon exoplanet
Kepler-37 b scores 32 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.
That score comes from 4 science badges — Confirmed exoplanet, Denser than iron, Multi-planet system and Found by Kepler — 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.