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Common star 17 EP

HD 220137

RA 350.3606° · Dec -13.6584° · star

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Score breakdown

· 5 badges
17 pts · Common
Common 22 pts → Uncommon
  • Distant (over 1,000 light-years) +6
  • Star +3
  • On the zodiac +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 17

5 more points to reach Uncommon.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • On the zodiac · +3
  • Yellow-white F-type star · +3
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads F5V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • 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. 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 8.7 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Aquarius.
  • Southern sky. It rides the southern half of the sky — an easier target the further south 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. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 19.2 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.038
bv
0.476
constellation
Aqr
dist ly
1090.8229
luminosity
33.4811
mag
8.66
name
HD 220137
spect
F5V

About HD 220137

HD 220137 is a common star. It lies about 1,090.8 light-years from Earth, sits in the constellation Aqr, shines at apparent magnitude 8.66 and has spectral type F5V.

Its spectrum reads F5V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 220137 in the constellation Aqr. At apparent magnitude 8.66, it is an easy target for binoculars.

Like any astronomical target, HD 220137 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 220137 is a common star

HD 220137 scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 5 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Distant (over 1,000 light-years), On the zodiac, Yellow-white F-type star and Main-sequence 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.