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Trash star 12 EP

HR 357

RA 19.1292° · Dec 79.9100° · star

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Score breakdown

· 4 badges
12 pts · Trash
Trash 15 pts → Common
  • Never sets (northern circumpolar) +4
  • Star +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 12

3 more points to reach Common.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • Yellow-white F-type star · +3
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads F5Vs — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • 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 6.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Cepheus.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around October — 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. ≈ 4.2 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.965
bv
0.44
constellation
Cep
dist ly
236.8597
luminosity
14.2561
mag
6.27
name
HR 357
spect
F5Vs

About HR 357

HR 357 is a trash star. It lies about 236.9 light-years from Earth, sits in the constellation Cep, shines at apparent magnitude 6.27 and has spectral type F5Vs.

Its spectrum reads F5Vs — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HR 357 in the constellation Cep. At apparent magnitude 6.27, it is an easy target for binoculars.

Like any astronomical target, HR 357 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 HR 357 is a trash star

HR 357 scores 12 points on Spacedle's rarity scale, which places it in the trash tier. Another 3 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Never sets (northern circumpolar), Yellow-white F-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.