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Rare star 39 EP

HD 43836

RA 94.8438° · Dec 23.2745° · star

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Score breakdown

· 6 badges
39 pts · Rare
Rare 50 pts → Epic
  • Bright giant +12
  • Intrinsically luminous (Mv < −2) +10
  • Distant (over 1,000 light-years) +6
  • White A-type star +5
  • Star +3
  • On the zodiac +3
Total score 39

11 more points to reach Epic.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • On the zodiac · +3
  • White A-type star · +5
  • Bright giant · +12
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads A0II — 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.
  • 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 7 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Gemini.
  • 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 December — 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
-2.497
bv
0.442
constellation
Gem
dist ly
2528.3411
luminosity
868.5604
mag
6.95
name
HD 43836
spect
A0II

About HD 43836

HD 43836 is a rare star. It lies about 2,528.3 light-years from Earth, sits in the constellation Gem, shines at apparent magnitude 6.95 and has spectral type A0II.

Its spectrum reads A0II — 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 HD 43836 in the constellation Gem. At apparent magnitude 6.95, it is an easy target for binoculars.

Like any astronomical target, HD 43836 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 43836 is a rare star

HD 43836 scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 11 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Distant (over 1,000 light-years), On the zodiac, White A-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.