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Uncommon variable star 26 EP

53 Ari

RA 46.8570° · Dec 17.8800° · star

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Score breakdown

· 7 badges
26 pts · Uncommon
Uncommon 34 pts → Rare
  • Hot blue B-type star +6
  • Variable star +5
  • Blue-white star +5
  • On the zodiac +3
  • A named variable star +3
  • Main-sequence star +2
  • Barely variable (under 0.05 mag) +2
Total score 26

8 more points to reach Rare.

Badges

  • Variable star · +5
  • On the zodiac · +3
  • Hot blue B-type star · +6
  • Main-sequence star · +2
  • 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 B1.5V — 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.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.
  • 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 6.1 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Aries.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around November — that's when to go looking.

Could we get there?

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

Properties

absmag
-0.904
bv
-0.123
constellation
Ari
dist ly
832.0305
luminosity
200.2627
mag
6.13
name
53 Ari
spect
B1.5V
var amplitude
0.01
var designation
UW
var max
6.127
var min
6.137

About 53 Ari

53 Ari is an uncommon variable star. It lies about 832 light-years from Earth, sits in the constellation Ari, shines at apparent magnitude 6.13 and has spectral type B1.5V.

Its spectrum reads B1.5V — 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 53 Ari in the constellation Ari. At apparent magnitude 6.13, it is an easy target for binoculars.

Like any astronomical target, 53 Ari 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 53 Ari is an uncommon variable star

53 Ari 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 7 science badges — Variable star, On the zodiac, Hot blue B-type star, Main-sequence star, 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.