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Epic variable star 62 EP

Spica

RA 201.2982° · Dec -11.1613° · star

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Score breakdown

· 10 badges
62 pts · Epic
Epic 78 pts → Anomaly
  • Brilliant (mag < 1) +18
  • Intrinsically luminous (Mv < −2) +10
  • Has a proper name +8
  • 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 62

16 more points to reach Anomaly.

Badges

  • Variable star · +5
  • Brilliant (mag < 1) · +18
  • Has a proper name · +8
  • On the zodiac · +3
  • Hot blue B-type star · +6
  • Main-sequence star · +2
  • Blue-white star · +5
  • Intrinsically luminous (Mv < −2) · +10
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads B1V — 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 1 it is one of the brightest points in the night sky — impossible to miss, over in Virgo.
  • 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 April — that's when to go looking.

Could we get there?

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

Properties

absmag
-3.44
bv
-0.235
constellation
Vir
dist ly
249.7367
luminosity
2070.1413
mag
0.98
name
Spica
named
yes
spect
B1V
var amplitude
0.04
var designation
Alp
var max
0.961
var min
1.001

About Spica

Spica is an epic variable star. It lies about 249.7 light-years from Earth, sits in the constellation Vir, shines at apparent magnitude 0.98 and has spectral type B1V.

Its spectrum reads B1V — 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 Spica in the constellation Vir. At apparent magnitude 0.98, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Spica 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 Spica is an epic variable star

Spica scores 62 points on Spacedle's rarity scale, which places it in the epic tier. Another 16 points would lift it into a rarer tier.

That score comes from 10 science badges — Variable star, Brilliant (mag < 1), Has a proper name, On the zodiac, Hot blue B-type star, Main-sequence star, Blue-white star and Intrinsically luminous (Mv < −2) — 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.