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Common star 18 EP

HIP 84747

RA 259.8520° · Dec 79.3710° · star

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Score breakdown

· 4 badges
18 pts · Common
Common 22 pts → Uncommon
  • Distant (over 1,000 light-years) +6
  • White A-type star +5
  • Never sets (northern circumpolar) +4
  • Star +3
Total score 18

4 more points to reach Uncommon.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Never sets (northern circumpolar) · +4
  • White A-type star · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads A0 — 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 8.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Ursa Minor.
  • 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 June — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 18.9 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.7 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
1.197
bv
0.209
constellation
UMi
dist ly
1076.4224
luminosity
28.9201
mag
8.79
name
HIP 84747
spect
A0

About HIP 84747

HIP 84747 is a common star. It lies about 1,076.4 light-years from Earth, sits in the constellation UMi, shines at apparent magnitude 8.79 and has spectral type A0.

Its spectrum reads A0 — 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 HIP 84747 in the constellation UMi. At apparent magnitude 8.79, it is an easy target for binoculars.

Like any astronomical target, HIP 84747 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 HIP 84747 is a common star

HIP 84747 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Distant (over 1,000 light-years), Never sets (northern circumpolar) and White A-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.