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Rare star 36 EP

Ross 686

RA 135.2101° · Dec 5.2420° · star

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Score breakdown

· 6 badges
36 pts · Rare
Rare 50 pts → Epic
  • Has a proper name +8
  • Deep red star +8
  • Binary star +6
  • Red dwarf +6
  • Cool red M-type star +5
  • Star +3
Total score 36

14 more points to reach Epic.

Badges

  • Star · +3
  • Binary star · +6
  • Has a proper name · +8
  • Cool red M-type star · +5
  • Deep red star · +8
  • Red dwarf · +6

Trivia

What makes it special

  • Not one star but two. It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

What it actually is

  • Spectral class. Its spectrum reads dM4 — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

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 12.7 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Hydra.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around February — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag
10.732
binary
yes
bv
1.47
constellation
Hya
dist ly
79.9989
luminosity
0.0044
mag
12.68
name
Ross 686
named
yes
spect
dM4

About Ross 686

Ross 686 is a rare star. It lies about 80 light-years from Earth, sits in the constellation Hya, shines at apparent magnitude 12.68 and has spectral type dM4.

It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

How to see it

Look for Ross 686 in the constellation Hya. At apparent magnitude 12.68, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Ross 686 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 686 is a rare star

Ross 686 scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 14 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Binary star, Has a proper name, Cool red M-type star, Deep red star and 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.