← Back to dex
Uncommon variable star 30 EP

HD 1306

RA 4.3837° · Dec 50.2873° · star

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

Computing the sky for your location…

Score breakdown

· 6 badges
30 pts · Uncommon
Uncommon 34 pts → Rare
  • Deep red star +8
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • Never sets (northern circumpolar) +4
  • Gently variable +4
  • A named variable star +3
Total score 30

4 more points to reach Rare.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • Never sets (northern circumpolar) · +4
  • Deep red star · +8
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads N0v — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.
  • 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 9.3 you'll want a small backyard telescope, over in Cassiopeia.
  • 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 September — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Properties

absmag
0.273
bv
1.6
constellation
Cas
dist ly
2064.2785
luminosity
67.733
mag
9.28
name
HD 1306
spect
N0v
var amplitude
0.27
var designation
ST
var max
9.153
var min
9.423

About HD 1306

HD 1306 is an uncommon variable star. It lies about 2,064.3 light-years from Earth, sits in the constellation Cas, shines at apparent magnitude 9.28 and has spectral type N0v.

Its spectrum reads N0v — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.

How to see it

Look for HD 1306 in the constellation Cas. At apparent magnitude 9.28, a small backyard telescope will bring it into view.

Like any astronomical target, HD 1306 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 1306 is an uncommon variable star

HD 1306 scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, Distant (over 1,000 light-years), Never sets (northern circumpolar), Deep red star, Gently 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.