About Kepler-1877 b
Kepler-1877 b is a trash exoplanet. It lies about 930.6 light-years from Earth, has an equilibrium temperature near 1,278 K, spans roughly 0.62 Earth radii and weighs about 0.18 Earth masses.
Around 62% of Earth's width.
Trash exoplanet 8 EP
Kepler-1877 b
RA 294.8669° · Dec 46.7905° · exoplanet
Score breakdown
· 2 badgesTrash 15 pts → Common
- Confirmed exoplanet +5
- Found by Kepler +3
Total score 8
7 more points to reach Common.
Badges
- Confirmed exoplanet · +5
- Found by Kepler · +3
Trivia
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 16.4 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 1.5 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 9306 years in a starship at a tenth of light speed.
- Distance. 931 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1095.
Saying hello
- Say hello. A radio message and its reply would take 1861 years round-trip.
Standing on it
- A year here. A full year lasts just 2.4 Earth days.
By the numbers
- Size. Around 62% of Earth's width.
- Mass. About 0.2× the mass of Earth.
- Your weight. You'd weigh about 0.5× your Earth weight standing here.
- Temperature. Around 1005°C — hotter than a self-cleaning oven.
How we found it
- Discovery. Found by Kepler using the transit method.
Properties
- density gcc
- 4.05
- discovery facility
- Kepler
- discovery method
- Transit
- dist ly
- 930.5622
- eccentricity
- 0
- eq temp k
- 1278
- insolation
- 691.1
- mass earth
- 0.179
- name
- Kepler-1877 b
- orbital period days
- 2.3776
- radius earth
- 0.6241
- sys num planets
- 1
How to see it
Like any astronomical target, Kepler-1877 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-1877 b is a trash exoplanet
Kepler-1877 b scores 8 points on Spacedle's rarity scale, which places it in the trash tier. Another 7 points would lift it into a rarer tier.
That score comes from 2 science badges — Confirmed exoplanet 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.