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Common star 15 EP

HD 210899

RA 333.5075° · Dec -24.6252° · star

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Score breakdown

· 4 badges
15 pts · Common
Common 22 pts → Uncommon
  • Giant star +6
  • Star +3
  • On the zodiac +3
  • Orange K-type star +3
Total score 15

7 more points to reach Uncommon.

Badges

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

Trivia

What it actually is

  • Spectral class. Its spectrum reads K3/K4III — 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 8.1 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 August — 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. ≈ 16.8 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.5 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
0.754
bv
1.382
constellation
Aqr
dist ly
956.4691
luminosity
43.4911
mag
8.09
name
HD 210899
spect
K3/K4III

About HD 210899

HD 210899 is a common star. It lies about 956.5 light-years from Earth, sits in the constellation Aqr, shines at apparent magnitude 8.09 and has spectral type K3/K4III.

Its spectrum reads K3/K4III — 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 210899 in the constellation Aqr. At apparent magnitude 8.09, it is an easy target for binoculars.

Like any astronomical target, HD 210899 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 210899 is a common star

HD 210899 scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, On the zodiac, Orange K-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.