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Epic star 50 EP

HR 3825

RA 143.6111° · Dec -59.2298° · star

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Score breakdown

· 7 badges
50 pts · Epic
Epic 78 pts → Anomaly
  • Bright giant +12
  • Intrinsically luminous (Mv < −2) +10
  • Naked-eye visible +8
  • Distant (over 1,000 light-years) +6
  • Hot blue B-type star +6
  • Blue-white star +5
  • Star +3
Total score 50

28 more points to reach Anomaly.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Naked-eye visible · +8
  • Hot blue B-type star · +6
  • Bright giant · +12
  • Blue-white star · +5
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads B5II — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.
  • 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 4.1 you can see it with your own eyes from a dark site, over in Carina.
  • 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 February — 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. ≈ 23.3 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-3.965
bv
-0.013
constellation
Car
dist ly
1325.8375
luminosity
3357.3761
mag
4.08
name
HR 3825
spect
B5II

About HR 3825

HR 3825 is an epic star. It lies about 1,325.8 light-years from Earth, sits in the constellation Car, shines at apparent magnitude 4.08 and has spectral type B5II.

Its spectrum reads B5II — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.

How to see it

Look for HR 3825 in the constellation Car. At apparent magnitude 4.08, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 3825 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 3825 is an epic star

HR 3825 scores 50 points on Spacedle's rarity scale, which places it in the epic tier. Another 28 points would lift it into a rarer tier.

That score comes from 7 science badges — Star, Distant (over 1,000 light-years), Naked-eye visible, Hot blue B-type star, Bright giant, Blue-white star 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.