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Common variable star 17 EP

HD 172468

RA 279.4211° · Dec 51.9460° · star

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Score breakdown

· 5 badges
17 pts · Common
Common 22 pts → Uncommon
  • Variable star +5
  • Never sets (northern circumpolar) +4
  • Orange K-type star +3
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 17

5 more points to reach Uncommon.

Badges

  • Variable star · +5
  • Never sets (northern circumpolar) · +4
  • Orange K-type star · +3
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads K2 — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • 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 7.5 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Draco.
  • 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 June — 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. ≈ 17 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.158
bv
1.247
constellation
Dra
dist ly
967.8219
luminosity
75.3009
mag
7.52
name
HD 172468
spect
K2
var amplitude
0.04
var designation
LT
var max
7.502
var min
7.542

About HD 172468

HD 172468 is a common variable star. It lies about 967.8 light-years from Earth, sits in the constellation Dra, shines at apparent magnitude 7.52 and has spectral type K2.

Its spectrum reads K2 — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.

How to see it

Look for HD 172468 in the constellation Dra. At apparent magnitude 7.52, it is an easy target for binoculars.

Like any astronomical target, HD 172468 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 172468 is a common variable star

HD 172468 scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 5 points would lift it into a rarer tier.

That score comes from 5 science badges — Variable star, Never sets (northern circumpolar), Orange K-type star, 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.