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Uncommon variable star 26 EP

HR 1321

RA 63.8574° · Dec 6.1997° · star

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Score breakdown

· 6 badges
26 pts · Uncommon
Uncommon 34 pts → Rare
  • Sun-like G-type star +8
  • Variable star +5
  • Subgiant (leaving the main sequence) +5
  • On the zodiac +3
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 26

8 more points to reach Rare.

Badges

  • Variable star · +5
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Subgiant (leaving the main sequence) · +5
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads G5IV — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a subgiant, caught in the act of leaving the main sequence as the hydrogen in its core runs out.
  • 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. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 6.9 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Taurus.
  • 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
5.323
bv
0.68
constellation
Tau
dist ly
68.679
luminosity
0.6468
mag
6.94
name
HR 1321
spect
G5IV
var amplitude
0.03
var designation
V891
var max
6.925
var min
6.955

About HR 1321

HR 1321 is an uncommon variable star. It lies about 68.7 light-years from Earth, sits in the constellation Tau, shines at apparent magnitude 6.94 and has spectral type G5IV.

Its spectrum reads G5IV — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HR 1321 in the constellation Tau. At apparent magnitude 6.94, it is an easy target for binoculars.

Like any astronomical target, HR 1321 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 1321 is an uncommon variable star

HR 1321 scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, On the zodiac, Sun-like G-type star, Subgiant (leaving the main sequence), 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.