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Uncommon galaxy 33 EP

IC 2101

RA 72.9260° · Dec -6.2314° · openngc

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Score breakdown

· 4 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Galaxy +14
  • Barred spiral galaxy +10
  • Outside our galaxy entirely +6
  • Faint fuzzy (mag > 13) +3
Total score 33

1 more point to reach Rare.

Badges

  • Galaxy · +14
  • Outside our galaxy entirely · +6
  • Barred spiral galaxy · +10
  • Faint fuzzy (mag > 13) · +3

Trivia

What makes it special

  • Barred spiral. A barred spiral — a straight bar of stars driving right through the nucleus, feeding gas inwards. Our own Milky Way is one of these.

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 14.4 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Eridanus.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around December — that's when to go looking.

Could we get there?

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

Properties

constellation
Eri
dist ly
212543845.9287
dso type
G
hubble
SBc
mag
14.42
name
IC 2101
radial velocity kms
4527
redshift
0.0152
size arcmin
1.76
surface brightness
23.17

About IC 2101

IC 2101 is an uncommon galaxy. It lies about 212,543,845.9 light-years from Earth, sits in the constellation Eri and shines at apparent magnitude 14.42.

A barred spiral — a straight bar of stars driving right through the nucleus, feeding gas inwards. Our own Milky Way is one of these.

How to see it

Look for IC 2101 in the constellation Eri. At apparent magnitude 14.42, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, IC 2101 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 2101 is an uncommon galaxy

IC 2101 scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Galaxy, Outside our galaxy entirely, Barred spiral galaxy 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.