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Rare star 34 EP

HD 110786

RA 191.3087° · Dec -62.2177° · star

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Score breakdown

· 4 badges
34 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Under the Southern Cross +8
  • White A-type star +5
  • Star +3
Total score 34

16 more points to reach Epic.

Badges

  • Star · +3
  • Under the Southern Cross · +8
  • White A-type star · +5
  • Supergiant · +18

Trivia

What it actually is

  • Spectral class. Its spectrum reads A3/A4Ib — 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.

Find it in the sky

  • How to spot it. At magnitude 7.6 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Crux.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around April — 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 4620 K, against the Sun's 5778 K.

What's in a name

  • Its catalogue. The HD number is from the Henry Draper Catalogue, in which Annie Jump Cannon personally classified the spectra of nearly 400,000 stars — still the largest such feat by one person.

Properties

absmag
-12.41
bv
1.053
constellation
Cru
luminosity
8016780.6339
mag
7.59
name
HD 110786
spect
A3/A4Ib

About HD 110786

HD 110786 is a rare star. It sits in the constellation Cru, shines at apparent magnitude 7.59 and has spectral type A3/A4Ib.

Its spectrum reads A3/A4Ib — 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 110786 in the constellation Cru. At apparent magnitude 7.59, it is an easy target for binoculars.

Like any astronomical target, HD 110786 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 110786 is a rare star

HD 110786 scores 34 points on Spacedle's rarity scale, which places it in the rare tier. Another 16 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Under the Southern Cross, White A-type star and Supergiant — 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.