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Common star 20 EP

HD 289953

RA 77.2181° · Dec -0.8881° · star

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Score breakdown

· 4 badges
20 pts · Common
Common 22 pts → Uncommon
  • In Orion's hunting ground +6
  • Giant star +6
  • White A-type star +5
  • Star +3
Total score 20

2 more points to reach Uncommon.

Badges

  • Star · +3
  • In Orion's hunting ground · +6
  • White A-type star · +5
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads A9III — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
  • Where it is in life. It is a giant. It has already exhausted its core hydrogen and swollen up enormously in response.

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 10.2 you'll want a small backyard telescope, over in Orion.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around December — 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 million years at Voyager 1's speed (17 km/s).

Properties

absmag
4.24
bv
0.519
constellation
Ori
dist ly
514.4416
luminosity
1.7539
mag
10.23
name
HD 289953
spect
A9III

About HD 289953

HD 289953 is a common star. It lies about 514.4 light-years from Earth, sits in the constellation Ori, shines at apparent magnitude 10.23 and has spectral type A9III.

Its spectrum reads A9III — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

How to see it

Look for HD 289953 in the constellation Ori. At apparent magnitude 10.23, a small backyard telescope will bring it into view.

Like any astronomical target, HD 289953 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 289953 is a common star

HD 289953 scores 20 points on Spacedle's rarity scale, which places it in the common tier. Another 2 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, In Orion's hunting ground, White A-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.