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Rare galaxy 43 EP

NGC 6789

RA 289.1757° · Dec 63.9715° · openngc

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Score breakdown

· 5 badges
43 pts · Rare
Rare 50 pts → Epic
  • Galaxy +14
  • Irregular galaxy (no shape at all) +12
  • Coming towards us +10
  • Never sets (northern circumpolar) +4
  • Faint fuzzy (mag > 13) +3
Total score 43

7 more points to reach Epic.

Badges

  • Galaxy · +14
  • Irregular galaxy (no shape at all) · +12
  • Never sets (northern circumpolar) · +4
  • Coming towards us · +10
  • Faint fuzzy (mag > 13) · +3

Trivia

What it actually is

  • What it actually is. A galaxy: a gravitationally bound city of stars, gas and dark matter, turning so slowly that a single rotation takes hundreds of millions of years.
  • Irregular. An irregular galaxy — no disc, no bulge, no symmetry. Most have been pulled out of shape by a larger neighbour's gravity.

Sense of scale

  • 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

  • How to spot it. At magnitude 13.5 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Draco.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around July — that's when to go looking.

Its true colour

  • Its true colour. Its colour is a census: blue where gas is still collapsing into hot young stars, yellow-red in the old, settled core.

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
Dra
dso type
G
hubble
I
mag
13.54
name
NGC 6789
radial velocity kms
-148
size arcmin
0.97
surface brightness
22.37

About NGC 6789

NGC 6789 is a rare galaxy. It sits in the constellation Dra and shines at apparent magnitude 13.54.

A galaxy: a gravitationally bound city of stars, gas and dark matter, turning so slowly that a single rotation takes hundreds of millions of years.

How to see it

Look for NGC 6789 in the constellation Dra. At apparent magnitude 13.54, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, NGC 6789 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 6789 is a rare galaxy

NGC 6789 scores 43 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.

That score comes from 5 science badges — Galaxy, Irregular galaxy (no shape at all), Never sets (northern circumpolar), Coming towards us and Faint fuzzy (mag > 13) — 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.