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Rare star 40 EP

HR 2933

RA 114.3205° · Dec -23.7754° · star

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Score breakdown

· 5 badges
40 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Intrinsically luminous (Mv < −2) +10
  • Distant (over 1,000 light-years) +6
  • Star +3
  • Yellow-white F-type star +3
Total score 40

10 more points to reach Epic.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Yellow-white F-type star · +3
  • Supergiant · +18
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads F0Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a supergiant, hundreds of times wider 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 6.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Puppis.
  • 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 January — 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. ≈ 44.4 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-3.107
bv
0.54
constellation
Pup
dist ly
2528.3411
luminosity
1523.3511
mag
6.34
name
HR 2933
spect
F0Ib

About HR 2933

HR 2933 is a rare star. It lies about 2,528.3 light-years from Earth, sits in the constellation Pup, shines at apparent magnitude 6.34 and has spectral type F0Ib.

Its spectrum reads F0Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HR 2933 in the constellation Pup. At apparent magnitude 6.34, it is an easy target for binoculars.

Like any astronomical target, HR 2933 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 2933 is a rare star

HR 2933 scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 10 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Distant (over 1,000 light-years), Yellow-white F-type star, Supergiant 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.