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Common variable star 17 EP

HD 9283

RA 22.6285° · Dec -42.7069° · star

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Score breakdown

· 5 badges
17 pts · Common
Common 22 pts → Uncommon
  • Variable star +5
  • Gently variable +4
  • Yellow-white F-type star +3
  • A named variable star +3
  • Main-sequence star +2
Total score 17

5 more points to reach Uncommon.

Badges

  • Variable star · +5
  • Yellow-white F-type star · +3
  • Main-sequence star · +2
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3/F5V — 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 9.8 you'll want a small backyard telescope, over in Phoenix.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around October — 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. ≈ 12.2 million years at Voyager 1's speed (17 km/s).

Properties

absmag
3.206
bv
0.52
constellation
Phe
dist ly
695.4285
luminosity
4.5457
mag
9.85
name
HD 9283
spect
F3/F5V
var amplitude
0.34
var designation
SY
var max
9.807
var min
10.147

About HD 9283

HD 9283 is a common variable star. It lies about 695.4 light-years from Earth, sits in the constellation Phe, shines at apparent magnitude 9.85 and has spectral type F3/F5V.

Its spectrum reads F3/F5V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 9283 in the constellation Phe. At apparent magnitude 9.85, a small backyard telescope will bring it into view.

Like any astronomical target, HD 9283 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 9283 is a common variable star

HD 9283 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, Yellow-white F-type star, Main-sequence 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.