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Uncommon galaxy 23 EP

IC 4803

RA 285.1661° · Dec -62.0651° · openngc

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Score breakdown

· 3 badges
23 pts · Uncommon
Uncommon 34 pts → Rare
  • Galaxy +14
  • Outside our galaxy entirely +6
  • Faint fuzzy (mag > 13) +3
Total score 23

11 more points to reach Rare.

Badges

  • Galaxy · +14
  • Outside our galaxy entirely · +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.

Sense of scale

  • In perspective. Deep in the extragalactic distance — further than the entire Virgo Cluster of galaxies.
  • 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 15.7 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Pavo.
  • 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 July — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 4.3 trillion years at Voyager 1's speed (17 km/s).

Properties

constellation
Pav
dist ly
245006510.0939
dso type
G
mag
15.68
name
IC 4803
radial velocity kms
5212
redshift
0.0175
size arcmin
0.76
surface brightness
23.82

About IC 4803

IC 4803 is an uncommon galaxy. It lies about 245,006,510.1 light-years from Earth, sits in the constellation Pav and shines at apparent magnitude 15.68.

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 4803 in the constellation Pav. At apparent magnitude 15.68, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, IC 4803 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 4803 is an uncommon galaxy

IC 4803 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, Outside our galaxy entirely 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.