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Rare variable star 35 EP

HD 92692

RA 160.2211° · Dec -57.9356° · star

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Score breakdown

· 5 badges
35 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Variable star +5
  • White A-type star +5
  • Gently variable +4
  • A named variable star +3
Total score 35

15 more points to reach Epic.

Badges

  • Variable star · +5
  • White A-type star · +5
  • Supergiant · +18
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads A2Ia — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
  • Where it is in life. It is a luminous supergiant — among the largest and rarest stars in the galaxy.
  • 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 6.9 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Carina.
  • 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 March — that's when to go looking.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out orange (B−V 0.9) — cooler than the Sun, and the kind of star that burns steadily for tens of billions of years.
  • Why no green stars. No star ever looks green: a surface hot enough to peak in green also floods out plenty of red and blue, and your eye blends the mixture back to white.

Properties

absmag
-13.1
bv
0.947
constellation
Car
luminosity
15135612.4844
mag
6.9
name
HD 92692
spect
A2Ia
var amplitude
0.08
var designation
V516
var max
6.858
var min
6.938

About HD 92692

HD 92692 is a rare variable star. It sits in the constellation Car, shines at apparent magnitude 6.9 and has spectral type A2Ia.

Its spectrum reads A2Ia — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

How to see it

Look for HD 92692 in the constellation Car. At apparent magnitude 6.9, it is an easy target for binoculars.

Like any astronomical target, HD 92692 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 92692 is a rare variable star

HD 92692 scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 5 science badges — Variable star, White A-type star, Supergiant, 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.