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Common variable star 21 EP

HIP 36088

RA 111.5300° · Dec -25.2573° · star

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Score breakdown

· 4 badges
21 pts · Common
Common 22 pts → Uncommon
  • Strongly variable +10
  • Variable star +5
  • Yellow-white F-type star +3
  • A named variable star +3
Total score 21

1 more point to reach Uncommon.

Badges

  • Variable star · +5
  • Yellow-white F-type star · +3
  • Strongly variable · +10
  • A named variable star · +3

Trivia

Hard to believe

  • True brightness. It pours out about 1 million times as much light as the Sun. It only looks ordinary because it is so far away.

What it actually is

  • Spectral class. Its spectrum reads F9 — 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.

Find it in the sky

  • How to spot it. At magnitude 9.8 you'll want a small backyard telescope, over in Canis Major.
  • 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 January — that's when to go looking.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out orange (B−V 1.1) — cooler than the Sun, and the kind of star that burns steadily for tens of billions of years.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 4420 K, against the Sun's 5778 K.

Properties

absmag
-10.19
bv
1.145
constellation
CMa
luminosity
1037528.4158
mag
9.81
name
HIP 36088
spect
F9
var amplitude
0.85
var designation
SS
var max
9.414
var min
10.264

About HIP 36088

HIP 36088 is a common variable star. It sits in the constellation CMa, shines at apparent magnitude 9.81 and has spectral type F9.

Its spectrum reads F9 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HIP 36088 in the constellation CMa. At apparent magnitude 9.81, a small backyard telescope will bring it into view.

Like any astronomical target, HIP 36088 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 HIP 36088 is a common variable star

HIP 36088 scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Variable star, Yellow-white F-type star, Strongly 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.