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Uncommon variable star 33 EP

HD 57364

RA 110.2019° · Dec -5.2599° · star

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Score breakdown

· 5 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Bright giant +12
  • Strongly variable +10
  • Variable star +5
  • Orange K-type star +3
  • A named variable star +3
Total score 33

1 more point to reach Rare.

Badges

  • Variable star · +5
  • Orange K-type star · +3
  • Bright giant · +12
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads K0II SB — 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.
  • It changes. This star does not hold still: its brightness rises and falls on a rhythm of hours, days or years, either pulsing in size or being eclipsed by a companion.

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 8.7 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Monoceros.
  • 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 January — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag
1.381
bv
1.061
constellation
Mon
dist ly
962.1123
luminosity
24.4118
mag
8.73
name
HD 57364
spect
K0II SB
var amplitude
0.84
var designation
AR
var max
8.626
var min
9.466

About HD 57364

HD 57364 is an uncommon variable star. It lies about 962.1 light-years from Earth, sits in the constellation Mon, shines at apparent magnitude 8.73 and has spectral type K0II SB.

Its spectrum reads K0II SB — 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 57364 in the constellation Mon. At apparent magnitude 8.73, it is an easy target for binoculars.

Like any astronomical target, HD 57364 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 57364 is an uncommon variable star

HD 57364 scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 5 science badges — Variable star, Orange K-type star, Bright giant, Strongly variable and A named variable 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.