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Uncommon star 26 EP

HD 94331

RA 163.0455° · Dec -57.3809° · 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

What it actually is

  • Spectral class. Its spectrum reads K3II/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 Carina.
  • 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.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out deep orange-red (B−V 1.5) — one of the coolest surfaces a star can have while still fusing.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 3800 K, against the Sun's 5778 K.

What's in a name

  • Its catalogue. The HD number is from the Henry Draper Catalogue, in which Annie Jump Cannon personally classified the spectra of nearly 400,000 stars — still the largest such feat by one person.

Properties

absmag
-12.04
bv
1.493
constellation
Car
luminosity
5701642.7228
mag
7.96
name
HD 94331
spect
K3II/III

About HD 94331

HD 94331 is an uncommon star. It sits in the constellation Car, shines at apparent magnitude 7.96 and has spectral type K3II/III.

Its spectrum reads K3II/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 94331 in the constellation Car. At apparent magnitude 7.96, it is an easy target for binoculars.

Like any astronomical target, HD 94331 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 94331 is an uncommon star

HD 94331 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.