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Rare variable star 45 EP

HD 59864

RA 112.6420° · Dec -34.0906° · star

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Score breakdown

· 7 badges
45 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Distant (over 1,000 light-years) +6
  • Hot blue B-type star +6
  • Variable star +5
  • Blue-white star +5
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 45

5 more points to reach Epic.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • Hot blue B-type star · +6
  • Supergiant · +18
  • Blue-white star · +5
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads B1/B2Ib/II — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.
  • 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 7.6 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Puppis.
  • 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 January — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 46.2 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-1.913
bv
-0.088
constellation
Pup
dist ly
2630.2903
luminosity
507.2242
mag
7.62
name
HD 59864
spect
B1/B2Ib/II
var amplitude
0.03
var designation
V350
var max
7.603
var min
7.633

About HD 59864

HD 59864 is a rare variable star. It lies about 2,630.3 light-years from Earth, sits in the constellation Pup, shines at apparent magnitude 7.62 and has spectral type B1/B2Ib/II.

Its spectrum reads B1/B2Ib/II — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.

How to see it

Look for HD 59864 in the constellation Pup. At apparent magnitude 7.62, it is an easy target for binoculars.

Like any astronomical target, HD 59864 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 59864 is a rare variable star

HD 59864 scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 5 points would lift it into a rarer tier.

That score comes from 7 science badges — Variable star, Distant (over 1,000 light-years), Hot blue B-type star, Supergiant, Blue-white star, Barely variable (under 0.05 mag) 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.