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Uncommon galaxy 23 EP

IC 1903 NED02

RA 48.3023° · Dec -50.5778° · openngc

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Score breakdown

· 3 badges
23 pts · Uncommon
Uncommon 34 pts → Rare
  • Galaxy +14
  • Lenticular galaxy (a disc with no arms) +6
  • Faint fuzzy (mag > 13) +3
Total score 23

11 more points to reach Rare.

Badges

  • Galaxy · +14
  • Lenticular galaxy (a disc with no arms) · +6
  • 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.
  • Lenticular. A lenticular galaxy: it has a disc like a spiral but has run out of the gas needed to make new stars, leaving the arms behind.

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 16.6 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Horologium.
  • 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 November — 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 Index Catalogue. The IC was the 1895 and 1908 supplement to the NGC — the first catalogue in history to be filled largely with objects found on photographic plates rather than by eye.

Properties

constellation
Hor
dso type
G
hubble
E-S0
mag
16.6
name
IC 1903 NED02
size arcmin
0.65
surface brightness
24.3

Nearby objects

About IC 1903 NED02

IC 1903 NED02 is an uncommon galaxy. It sits in the constellation Hor and shines at apparent magnitude 16.6.

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 IC 1903 NED02 in the constellation Hor. At apparent magnitude 16.6, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, IC 1903 NED02 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 IC 1903 NED02 is an uncommon galaxy

IC 1903 NED02 scores 23 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 11 points would lift it into a rarer tier.

That score comes from 3 science badges — Galaxy, Lenticular galaxy (a disc with no arms) 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.