← Back to dex
Rare variable star 41 EP

Beid

RA 62.9664° · Dec -6.8376° · star

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

Computing the sky for your location…

Score breakdown

· 7 badges
41 pts · Rare
Rare 50 pts → Epic
  • Bright giant +12
  • Naked-eye visible +8
  • Has a proper name +8
  • Variable star +5
  • Yellow-white F-type star +3
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 41

9 more points to reach Epic.

Badges

  • Variable star · +5
  • Naked-eye visible · +8
  • Has a proper name · +8
  • Yellow-white F-type star · +3
  • Bright giant · +12
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F2II-III — 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.
  • It changes. This star does not hold still: its brightness rises and falls on a rhythm of hours, days or years, either pulsing in size or being eclipsed by a companion.

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 you can see it with your own eyes from a dark site, over in Eridanus.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around November — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag
1.181
bv
0.327
constellation
Eri
dist ly
121.6999
luminosity
29.3495
mag
4.04
name
Beid
named
yes
spect
F2II-III
var amplitude
0.04
var designation
Omi-1
var max
4.022
var min
4.062

About Beid

Beid is a rare variable star. It lies about 121.7 light-years from Earth, sits in the constellation Eri, shines at apparent magnitude 4.04 and has spectral type F2II-III.

Its spectrum reads F2II-III — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for Beid in the constellation Eri. At apparent magnitude 4.04, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Beid 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 Beid is a rare variable star

Beid scores 41 points on Spacedle's rarity scale, which places it in the rare tier. Another 9 points would lift it into a rarer tier.

That score comes from 7 science badges — Variable star, Naked-eye visible, Has a proper name, Yellow-white F-type star, Bright giant, Barely variable (under 0.05 mag) and A named variable 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.