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Common star 16 EP

45 Leo

RA 156.9125° · Dec 9.7624° · star

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Score breakdown

· 4 badges
16 pts · Common
Common 22 pts → Uncommon
  • White A-type star +5
  • Blue-white star +5
  • Star +3
  • On the zodiac +3
Total score 16

6 more points to reach Uncommon.

Badges

  • Star · +3
  • On the zodiac · +3
  • White A-type star · +5
  • Blue-white star · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads A0sp... — 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. 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 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Leo.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around February — 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. ≈ 7.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 658 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
0.454
bv
-0.043
constellation
Leo
dist ly
421.3903
luminosity
57.3324
mag
6.01
name
45 Leo
spect
A0sp...

About 45 Leo

45 Leo is a common star. It lies about 421.4 light-years from Earth, sits in the constellation Leo, shines at apparent magnitude 6.01 and has spectral type A0sp....

Its spectrum reads A0sp... — 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 45 Leo in the constellation Leo. At apparent magnitude 6.01, it is an easy target for binoculars.

Like any astronomical target, 45 Leo 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 45 Leo is a common star

45 Leo scores 16 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, On the zodiac, White A-type star and Blue-white 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.