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Uncommon star 28 EP

HD 103353

RA 178.5198° · Dec 37.9521° · star

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Score breakdown

· 4 badges
28 pts · Uncommon
Uncommon 34 pts → Rare
  • Supergiant +18
  • Never sets (northern circumpolar) +4
  • Star +3
  • Yellow-white F-type star +3
Total score 28

6 more points to reach Rare.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • Yellow-white F-type star · +3
  • Supergiant · +18

Trivia

What it actually is

  • Spectral class. Its spectrum reads F6Iab: — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a supergiant. Drop it where the Sun is and its surface would engulf the inner planets.

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 9.1 you'll want a small backyard telescope, over in Ursa Major.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around March — 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. ≈ 9.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
2.86
bv
0.476
constellation
UMa
dist ly
564.2838
luminosity
6.2517
mag
9.05
name
HD 103353
spect
F6Iab:

About HD 103353

HD 103353 is an uncommon star. It lies about 564.3 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 9.05 and has spectral type F6Iab:.

Its spectrum reads F6Iab: — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 103353 in the constellation UMa. At apparent magnitude 9.05, a small backyard telescope will bring it into view.

Like any astronomical target, HD 103353 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 103353 is an uncommon star

HD 103353 scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 6 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 Supergiant — 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.