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Common star 20 EP

11 Tri

RA 36.8657° · Dec 31.8013° · star

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Score breakdown

· 4 badges
20 pts · Common
Common 22 pts → Uncommon
  • Naked-eye visible +8
  • Giant star +6
  • Star +3
  • Orange K-type star +3
Total score 20

2 more points to reach Uncommon.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Orange K-type star · +3
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads K1III: — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • Where it is in life. It is a giant. It has already exhausted its core hydrogen and swollen up enormously in response.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 5.5 you can see it with your own eyes from a dark site, over in Triangulum.
  • 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 October — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 4.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.896
bv
1.114
constellation
Tri
dist ly
278.0529
luminosity
38.1593
mag
5.55
name
11 Tri
spect
K1III:

About 11 Tri

11 Tri is a common star. It lies about 278.1 light-years from Earth, sits in the constellation Tri, shines at apparent magnitude 5.55 and has spectral type K1III:.

Its spectrum reads K1III: — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.

How to see it

Look for 11 Tri in the constellation Tri. At apparent magnitude 5.55, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 11 Tri 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 11 Tri is a common star

11 Tri scores 20 points on Spacedle's rarity scale, which places it in the common tier. Another 2 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Naked-eye visible, Orange K-type star and Giant star — 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.