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Uncommon variable star 29 EP

HD 283572

RA 65.4952° · Dec 28.3018° · star

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Score breakdown

· 6 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Sun-like G-type star +8
  • Giant star +6
  • Variable star +5
  • Gently variable +4
  • On the zodiac +3
  • A named variable star +3
Total score 29

5 more points to reach Rare.

Badges

  • Variable star · +5
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Giant star · +6
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads G2III — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a giant. It has already exhausted its core hydrogen and swollen up enormously in response.
  • 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 you'll want a small backyard telescope, over in Taurus.
  • 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 November — that's when to go looking.

Could we get there?

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

Properties

absmag
3.486
bv
0.798
constellation
Tau
dist ly
417.0792
luminosity
3.5124
mag
9.02
name
HD 283572
spect
G2III
var amplitude
0.12
var designation
V987
var max
8.976
var min
9.096

About HD 283572

HD 283572 is an uncommon variable star. It lies about 417.1 light-years from Earth, sits in the constellation Tau, shines at apparent magnitude 9.02 and has spectral type G2III.

Its spectrum reads G2III — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 283572 in the constellation Tau. At apparent magnitude 9.02, a small backyard telescope will bring it into view.

Like any astronomical target, HD 283572 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 283572 is an uncommon variable star

HD 283572 scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 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, Giant 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.