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Rare star 42 EP

Ups2Cen

RA 210.4312° · Dec -45.6034° · star

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Score breakdown

· 6 badges
42 pts · Rare
Rare 50 pts → Epic
  • Bright giant +12
  • Intrinsically luminous (Mv < −2) +10
  • Naked-eye visible +8
  • Distant (over 1,000 light-years) +6
  • Star +3
  • Yellow-white F-type star +3
Total score 42

8 more points to reach Epic.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Naked-eye visible · +8
  • Yellow-white F-type star · +3
  • Bright giant · +12
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads F6II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a bright giant, well on its way to the largest stars there are.

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 4.3 you can see it with your own eyes from a dark site, over in Centaurus.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • 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. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 22.3 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-3.61
bv
0.598
constellation
Cen
dist ly
1269.0896
luminosity
2421.029
mag
4.34
name
Ups2Cen
spect
F6II

About Ups2Cen

Ups2Cen is a rare star. It lies about 1,269.1 light-years from Earth, sits in the constellation Cen, shines at apparent magnitude 4.34 and has spectral type F6II.

Its spectrum reads F6II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for Ups2Cen in the constellation Cen. At apparent magnitude 4.34, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Ups2Cen 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 Ups2Cen is a rare star

Ups2Cen scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 8 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Distant (over 1,000 light-years), Naked-eye visible, Yellow-white F-type star, Bright giant and Intrinsically luminous (Mv < −2) — 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.