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Uncommon star 26 EP

HD 113433

RA 196.3101° · Dec -69.5964° · star

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Score breakdown

· 4 badges
26 pts · Uncommon
Uncommon 34 pts → Rare
  • Bright giant +12
  • Deep red star +8
  • Star +3
  • Orange K-type star +3
Total score 26

8 more points to reach Rare.

Badges

  • Star · +3
  • Orange K-type star · +3
  • Bright giant · +12
  • Deep red star · +8

Trivia

Hard to believe

  • True brightness. It pours out about 5.4 million times as much light as the Sun. It only looks ordinary because it is so far away.

What it actually is

  • Spectral class. Its spectrum reads K2II/III — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • Where it is in life. It is a bright giant, well on its way to the largest stars there are.

Find it in the sky

  • How to spot it. At magnitude 8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Musca.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around April — that's when to go looking.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out deep orange-red (B−V 1.6) — one of the coolest surfaces a star can have while still fusing.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 3680 K, against the Sun's 5778 K.

Properties

absmag
-12
bv
1.576
constellation
Mus
luminosity
5495408.7386
mag
8
name
HD 113433
spect
K2II/III

About HD 113433

HD 113433 is an uncommon star. It sits in the constellation Mus, shines at apparent magnitude 8 and has spectral type K2II/III.

Its spectrum reads K2II/III — 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 113433 in the constellation Mus. At apparent magnitude 8, it is an easy target for binoculars.

Like any astronomical target, HD 113433 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 113433 is an uncommon star

HD 113433 scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Orange K-type star, Bright giant 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.