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Trash star 11 EP

HD 45820

RA 95.3328° · Dec -75.1280° · star

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Score breakdown

· 3 badges
11 pts · Trash
Trash 15 pts → Common
  • Subgiant (leaving the main sequence) +5
  • Star +3
  • Yellow-white F-type star +3
Total score 11

4 more points to reach Common.

Badges

  • Star · +3
  • Yellow-white F-type star · +3
  • Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads F6/F7IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

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 8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Mensa.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • 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. ≈ 6.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 567.1 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
2.766
bv
0.546
constellation
Men
dist ly
363.2028
luminosity
6.8171
mag
8
name
HD 45820
spect
F6/F7IV

About HD 45820

HD 45820 is a trash star. It lies about 363.2 light-years from Earth, sits in the constellation Men, shines at apparent magnitude 8 and has spectral type F6/F7IV.

Its spectrum reads F6/F7IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 45820 in the constellation Men. At apparent magnitude 8, it is an easy target for binoculars.

Like any astronomical target, HD 45820 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 HD 45820 is a trash star

HD 45820 scores 11 points on Spacedle's rarity scale, which places it in the trash tier. Another 4 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, Yellow-white F-type star and Subgiant (leaving the main sequence) — 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.