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Anomaly star 91 EP

Sirius

RA 101.2872° · Dec -16.7161° · star

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Score breakdown

· 7 badges
91 pts · Anomaly
Anomaly 120 pts → Mythic
  • Sirius, the brightest star in the sky +26
  • Stellar next door (<10 ly) +25
  • Brilliant (mag < 1) +18
  • Has a proper name +8
  • Binary star +6
  • White A-type star +5
  • Star +3
Total score 91

29 more points to reach Mythic.

Badges

  • Star · +3
  • Stellar next door (<10 ly) · +25
  • Brilliant (mag < 1) · +18
  • Binary star · +6
  • Has a proper name · +8
  • White A-type star · +5
  • Sirius, the brightest star in the sky · +26

Trivia

What makes it special

  • Next-door neighbour. One of the closest objects of its kind to the Sun — a first port of call for any interstellar mission we ever build.
  • Not one star but two. It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

Hard to believe

  • Top of the charts. Brighter than magnitude 0 — one of barely a dozen such beacons in the entire sky.

What it actually is

  • Spectral class. Its spectrum reads A0m... — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude -1.4 it is one of the brightest points in the night sky — impossible to miss, over in Canis Major.
  • 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 December — that's when to go looking.

Properties

absmag
1.454
binary
yes
bv
0.009
constellation
CMa
dist ly
8.6011
luminosity
22.8244
mag
-1.44
name
Sirius
named
yes
spect
A0m...

About Sirius

Sirius is an anomaly star. It lies about 8.6 light-years from Earth, sits in the constellation CMa, shines at apparent magnitude -1.44 and has spectral type A0m....

One of the closest objects of its kind to the Sun — a first port of call for any interstellar mission we ever build.

How to see it

Look for Sirius in the constellation CMa. At apparent magnitude -1.44, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Sirius 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 Sirius is an anomaly star

Sirius scores 91 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 29 points would lift it into a rarer tier.

That score comes from 7 science badges — Star, Stellar next door (<10 ly), Brilliant (mag < 1), Binary star, Has a proper name, White A-type star and Sirius, the brightest star in the sky — 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.