Anomaly exoplanet 82 EP

Kepler-1258 b

RA 285.4050° · Dec 49.9948° · exoplanet

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Score breakdown

· 7 badges

82 pts · Anomaly

Anomaly 95 pts → Mythic

Ultra-hot Jupiter +26
Earth-sized +16
Ultra-short period +14
Distant (>1000 ly) +10
Blasted by starlight +8
Confirmed exoplanet +5
Found by Kepler +3

Total score 82

13 more points to reach Mythic.

Badges

Confirmed exoplanet · +5
Earth-sized · +16
Ultra-hot Jupiter · +26
Ultra-short period · +14
Blasted by starlight · +8
Found by Kepler · +3
Distant (>1000 ly) · +10

Trivia

What makes it special

Ultra-hot Jupiter. So hot that iron vaporises and rains back down as molten metal.

Could we get there?

Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

Aboard Voyager 1. ≈ 41.1 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 3.7 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 23.4 thousand years in a starship at a tenth of light speed.
Distance. 2340 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 4681 years round-trip.

Standing on it

A year here. A full year lasts just 1 Earth days.

By the numbers

Size. Around 86% of Earth's width.
Mass. About 0.6× the mass of Earth.
Your weight. You'd weigh about 0.8× your Earth weight standing here.
Temperature. Around 2335 K — hot enough to vaporise iron.

How we found it

Discovery. Found by Kepler using the transit method.

Properties

density gcc: 4.89
discovery facility: Kepler
discovery method: Transit
dist ly: 2340.3487
eccentricity: 0
eq temp k: 2335
insolation: 2775
mass earth: 0.566
name: Kepler-1258 b
orbital period days: 0.9849
radius earth: 0.86
sys num planets: 1

About Kepler-1258 b

Kepler-1258 b is an anomaly exoplanet. It lies about 2,340.3 light-years from Earth, has an equilibrium temperature near 2,335 K, spans roughly 0.86 Earth radii and weighs about 0.57 Earth masses.

So hot that iron vaporises and rains back down as molten metal.

How to see it

Like any astronomical target, Kepler-1258 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-1258 b is an anomaly exoplanet

Kepler-1258 b scores 82 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 13 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Earth-sized, Ultra-hot Jupiter, Ultra-short period, Blasted by starlight, 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.