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Common star 19 EP

23 And

RA 3.3786° · Dec 41.0354° · star

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Score breakdown

· 4 badges
19 pts · Common
Common 22 pts → Uncommon
  • Naked-eye visible +8
  • Subgiant (leaving the main sequence) +5
  • Star +3
  • Yellow-white F-type star +3
Total score 19

3 more points to reach Uncommon.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Yellow-white F-type star · +3
  • Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads F0IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a subgiant, caught in the act of leaving the main sequence as the hydrogen in its core runs out.

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 5.7 you can see it with your own eyes from a dark site, over in Andromeda.
  • 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 September — 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 million years at Voyager 1's speed (17 km/s).

Properties

absmag
2.996
bv
0.331
constellation
And
dist ly
113.8415
luminosity
5.5157
mag
5.71
name
23 And
spect
F0IV

About 23 And

23 And is a common star. It lies about 113.8 light-years from Earth, sits in the constellation And, shines at apparent magnitude 5.71 and has spectral type F0IV.

Its spectrum reads F0IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for 23 And in the constellation And. At apparent magnitude 5.71, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 23 And 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 23 And is a common star

23 And scores 19 points on Spacedle's rarity scale, which places it in the common tier. Another 3 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Naked-eye visible, Yellow-white F-type star and Subgiant (leaving the main sequence) — 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.