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Uncommon galaxy 28 EP

NGC 5805

RA 224.2996° · Dec 49.6278° · openngc

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Score breakdown

· 2 badges
28 pts · Uncommon
Uncommon 34 pts → Rare
  • Galaxy +14
  • Interacting galaxy pair +14
Total score 28

6 more points to reach Rare.

Badges

  • Galaxy · +14
  • Interacting galaxy pair · +14

Trivia

What it actually is

  • What it actually is. Not one galaxy but two, locked in a gravitational embrace. Encounters like this shred spiral arms and trigger furious bursts of star formation.

Sense of scale

  • Sense of scale. Galaxies pass through each other almost without collisions — the stars are so far apart that they simply miss.
  • Scale. Home to hundreds of billions of stars — a universe unto itself, and every one of those points of light could have planets.

Find it in the sky

  • Where to look. You'll find it in the constellation Boötes.
  • 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 May — that's when to go looking.

How we came to know it

  • The New General Catalogue. Its NGC number comes from J. L. E. Dreyer's 1888 catalogue, itself built on decades of sky sweeps by William Herschel and his sister Caroline.

Properties

constellation
Boo
dso type
GPair
name
NGC 5805
size arcmin
0.7

Nearby objects

About NGC 5805

NGC 5805 is an uncommon galaxy. It sits in the constellation Boo.

Not one galaxy but two, locked in a gravitational embrace. Encounters like this shred spiral arms and trigger furious bursts of star formation.

How to see it

Look for NGC 5805 in the constellation Boo.

Like any astronomical target, NGC 5805 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 NGC 5805 is an uncommon galaxy

NGC 5805 scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 6 points would lift it into a rarer tier.

That score comes from 2 science badges — Galaxy and Interacting galaxy pair — 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.