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Trash star 14 EP

HD 210780

RA 333.2893° · Dec -21.4060° · star

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Score breakdown

· 4 badges
14 pts · Trash
Trash 15 pts → Common
  • Hot blue B-type star +6
  • Star +3
  • On the zodiac +3
  • Main-sequence star +2
Total score 14

1 more point to reach Common.

Badges

  • Star · +3
  • On the zodiac · +3
  • Hot blue B-type star · +6
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads B9.5/A0V — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions 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 8.3 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. ≈ 9.6 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 855.9 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
2.213
bv
0.052
constellation
Aqr
dist ly
548.1613
luminosity
11.3449
mag
8.34
name
HD 210780
spect
B9.5/A0V

About HD 210780

HD 210780 is a trash star. It lies about 548.2 light-years from Earth, sits in the constellation Aqr, shines at apparent magnitude 8.34 and has spectral type B9.5/A0V.

Its spectrum reads B9.5/A0V — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.

How to see it

Look for HD 210780 in the constellation Aqr. At apparent magnitude 8.34, it is an easy target for binoculars.

Like any astronomical target, HD 210780 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 210780 is a trash star

HD 210780 scores 14 points on Spacedle's rarity scale, which places it in the trash tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Star, On the zodiac, Hot blue B-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.