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Uncommon star 31 EP

Jishui

RA 114.7914° · Dec 34.5843° · star

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Score breakdown

· 6 badges
31 pts · Uncommon
Uncommon 34 pts → Rare
  • Naked-eye visible +8
  • Has a proper name +8
  • Giant star +6
  • Star +3
  • On the zodiac +3
  • Yellow-white F-type star +3
Total score 31

3 more points to reach Rare.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Has a proper name · +8
  • On the zodiac · +3
  • Yellow-white F-type star · +3
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3III — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • 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 4.9 you can see it with your own eyes from a dark site, over in Gemini.
  • 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 January — 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. ≈ 2.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.352
bv
0.413
constellation
Gem
dist ly
166.3213
luminosity
25.0726
mag
4.89
name
Jishui
named
yes
spect
F3III

About Jishui

Jishui is an uncommon star. It lies about 166.3 light-years from Earth, sits in the constellation Gem, shines at apparent magnitude 4.89 and has spectral type F3III.

Its spectrum reads F3III — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for Jishui in the constellation Gem. At apparent magnitude 4.89, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Jishui 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 Jishui is an uncommon star

Jishui scores 31 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 3 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Naked-eye visible, Has a proper name, On the zodiac, Yellow-white F-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.