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Epic exoplanet 51 EP

Ross 508 b

RA 230.9613° · Dec 17.4605° · exoplanet

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Score breakdown

· 4 badges
51 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Super-Earth +8
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
Total score 51

27 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Super-Earth · +8
  • Orbits a red dwarf · +8

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • What it is made of. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 14.2 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around May — that's when to go looking.

Properties

density gcc
3.59
diameter km
23343.846
discovery facility
Subaru Telescope
discovery method
Radial Velocity
discovery year
2022
dist ly
36.5631
eccentricity
0.33
eq temp k
293.86
habitable zone
yes
host star teff
3071
insolation
1.2464
mag
14.18
mass earth
4
name
Ross 508 b
orbital period days
10.77
radius earth
1.83
semi major au
0.0537
spect
M4.5 V
sys num planets
1
sys num stars
1

Nearby objects

About Ross 508 b

Ross 508 b is an epic exoplanet. It lies about 36.6 light-years from Earth, shines at apparent magnitude 14.18, has spectral type M4.5 V and has an equilibrium temperature near 294 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 14.18, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Ross 508 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 Ross 508 b is an epic exoplanet

Ross 508 b scores 51 points on Spacedle's rarity scale, which places it in the epic tier. Another 27 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, In the habitable zone, Super-Earth and Orbits a red dwarf — 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.