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Common star 16 EP

HD 221627

RA 353.3950° · Dec 17.8188° · star

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Score breakdown

· 3 badges
16 pts · Common
Common 22 pts → Uncommon
  • Sun-like G-type star +8
  • Subgiant (leaving the main sequence) +5
  • Star +3
Total score 16

6 more points to reach Uncommon.

Badges

  • Star · +3
  • Sun-like G-type star · +8
  • Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads G2IV — a G-type star: the very same spectral class as our own 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 6.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Pegasus.
  • 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. ≈ 2.8 million years at Voyager 1's speed (17 km/s).

Properties

absmag
3.395
bv
0.666
constellation
Peg
dist ly
157.1837
luminosity
3.8194
mag
6.81
name
HD 221627
spect
G2IV

About HD 221627

HD 221627 is a common star. It lies about 157.2 light-years from Earth, sits in the constellation Peg, shines at apparent magnitude 6.81 and has spectral type G2IV.

Its spectrum reads G2IV — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 221627 in the constellation Peg. At apparent magnitude 6.81, it is an easy target for binoculars.

Like any astronomical target, HD 221627 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 HD 221627 is a common star

HD 221627 scores 16 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, Sun-like G-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.