← Back to dex
Rare star 42 EP

HR 3726

RA 140.4624° · Dec -42.1949° · star

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges
42 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Naked-eye visible +8
  • Deep red star +8
  • Cool red M-type star +5
  • Star +3
Total score 42

8 more points to reach Epic.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Cool red M-type star · +5
  • Supergiant · +18
  • Deep red star · +8

Trivia

What it actually is

  • Spectral class. Its spectrum reads M3Ib — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
  • 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 5.6 you can see it with your own eyes from a dark site, over in Vela.
  • 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. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 10.1 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-0.668
bv
1.637
constellation
Vel
dist ly
574.2182
luminosity
161.1388
mag
5.56
name
HR 3726
spect
M3Ib

About HR 3726

HR 3726 is a rare star. It lies about 574.2 light-years from Earth, sits in the constellation Vel, shines at apparent magnitude 5.56 and has spectral type M3Ib.

Its spectrum reads M3Ib — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.

How to see it

Look for HR 3726 in the constellation Vel. At apparent magnitude 5.56, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 3726 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 3726 is a rare star

HR 3726 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 5 science badges — Star, Naked-eye visible, Cool red M-type star, Supergiant and Deep red star — 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.