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Uncommon variable star 25 EP

HD 29213

RA 70.6928° · Dec 72.9783° · star

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Score breakdown

· 5 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Strongly variable +10
  • Variable star +5
  • Never sets (northern circumpolar) +4
  • Yellow-white F-type star +3
  • A named variable star +3
Total score 25

9 more points to reach Rare.

Badges

  • Variable star · +5
  • Never sets (northern circumpolar) · +4
  • Yellow-white F-type star · +3
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F0 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • 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 8.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Camelopardalis.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • 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.

Getting there

  • Aboard Voyager 1. ≈ 10.6 million years at Voyager 1's speed (17 km/s).

Properties

absmag
2.024
bv
0.34
constellation
Cam
dist ly
600.6557
luminosity
13.5021
mag
8.35
name
HD 29213
spect
F0
var amplitude
0.51
var designation
DN
var max
8.165
var min
8.675

About HD 29213

HD 29213 is an uncommon variable star. It lies about 600.7 light-years from Earth, sits in the constellation Cam, shines at apparent magnitude 8.35 and has spectral type F0.

Its spectrum reads F0 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 29213 in the constellation Cam. At apparent magnitude 8.35, it is an easy target for binoculars.

Like any astronomical target, HD 29213 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 29213 is an uncommon variable star

HD 29213 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 5 science badges — Variable star, Never sets (northern circumpolar), Yellow-white F-type star, Strongly variable 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.