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Uncommon star 23 EP

HD 216727

RA 343.8775° · Dec -20.1394° · star

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Score breakdown

· 5 badges
23 pts · Uncommon
Uncommon 34 pts → Rare
  • Deep red star +8
  • Giant star +6
  • Star +3
  • On the zodiac +3
  • Orange K-type star +3
Total score 23

11 more points to reach Rare.

Badges

  • Star · +3
  • On the zodiac · +3
  • Orange K-type star · +3
  • Giant star · +6
  • Deep red star · +8

Trivia

What it actually is

  • Spectral class. Its spectrum reads K4/K5III — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.

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 6.4 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. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 12.2 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.1 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
-0.28
bv
1.429
constellation
Aqr
dist ly
693.9491
luminosity
112.7197
mag
6.36
name
HD 216727
spect
K4/K5III

About HD 216727

HD 216727 is an uncommon star. It lies about 693.9 light-years from Earth, sits in the constellation Aqr, shines at apparent magnitude 6.36 and has spectral type K4/K5III.

Its spectrum reads K4/K5III — 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 HD 216727 in the constellation Aqr. At apparent magnitude 6.36, it is an easy target for binoculars.

Like any astronomical target, HD 216727 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 216727 is an uncommon star

HD 216727 scores 23 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 11 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, On the zodiac, Orange K-type star, Giant star and Deep red 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.