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Trash star 10 EP

18 Aur

RA 79.8489° · Dec 33.9854° · star

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Score breakdown

· 3 badges
10 pts · Trash
Trash 15 pts → Common
  • White A-type star +5
  • Star +3
  • Main-sequence star +2
Total score 10

5 more points to reach Common.

Badges

  • Star · +3
  • White A-type star · +5
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads A7V — 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.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

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

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 3.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
2.309
bv
0.256
constellation
Aur
dist ly
223.7009
luminosity
10.3848
mag
6.49
name
18 Aur
spect
A7V

About 18 Aur

18 Aur is a trash star. It lies about 223.7 light-years from Earth, sits in the constellation Aur, shines at apparent magnitude 6.49 and has spectral type A7V.

Its spectrum reads A7V — 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.

How to see it

Look for 18 Aur in the constellation Aur. At apparent magnitude 6.49, it is an easy target for binoculars.

Like any astronomical target, 18 Aur 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 18 Aur is a trash star

18 Aur scores 10 points on Spacedle's rarity scale, which places it in the trash tier. Another 5 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, White A-type star and Main-sequence 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.