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Common star 20 EP

HD 107233

RA 184.9818° · Dec -48.3165° · star

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Score breakdown

· 3 badges
20 pts · Common
Common 22 pts → Uncommon
  • Bright giant +12
  • White A-type star +5
  • Star +3
Total score 20

2 more points to reach Uncommon.

Badges

  • Star · +3
  • White A-type star · +5
  • Bright giant · +12

Trivia

What it actually is

  • Spectral class. Its spectrum reads A4II — 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 bright giant, well on its way to the largest stars there are.

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 7.4 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Centaurus.
  • 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 March — 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. ≈ 5.1 million years at Voyager 1's speed (17 km/s).

Properties

absmag
2.62
bv
0.255
constellation
Cen
dist ly
289.4018
luminosity
7.7983
mag
7.36
name
HD 107233
spect
A4II

About HD 107233

HD 107233 is a common star. It lies about 289.4 light-years from Earth, sits in the constellation Cen, shines at apparent magnitude 7.36 and has spectral type A4II.

Its spectrum reads A4II — 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 107233 in the constellation Cen. At apparent magnitude 7.36, it is an easy target for binoculars.

Like any astronomical target, HD 107233 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 107233 is a common star

HD 107233 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 3 science badges — Star, White A-type star and Bright giant — 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.