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Trash star 6 EP

HD 121100

RA 208.9697° · Dec -66.3397° · star

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Score breakdown

· 2 badges
6 pts · Trash
Trash 15 pts → Common
  • Star +3
  • Yellow-white F-type star +3
Total score 6

9 more points to reach Common.

Badges

  • Star · +3
  • Yellow-white F-type star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F6/F7 — 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 8.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Circinus.
  • 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 April — 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. ≈ 5.6 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 499.3 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
3.803
bv
0.426
constellation
Cir
dist ly
319.7607
luminosity
2.623
mag
8.76
name
HD 121100
spect
F6/F7

About HD 121100

HD 121100 is a trash star. It lies about 319.8 light-years from Earth, sits in the constellation Cir, shines at apparent magnitude 8.76 and has spectral type F6/F7.

Its spectrum reads F6/F7 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 121100 in the constellation Cir. At apparent magnitude 8.76, it is an easy target for binoculars.

Like any astronomical target, HD 121100 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 121100 is a trash star

HD 121100 scores 6 points on Spacedle's rarity scale, which places it in the trash tier. Another 9 points would lift it into a rarer tier.

That score comes from 2 science badges — Star and Yellow-white F-type 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.