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Uncommon galaxy 32 EP

NGC 7402

RA 343.2687° · Dec 1.1444° · openngc

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Score breakdown

· 5 badges
32 pts · Uncommon
Uncommon 34 pts → Rare
  • Galaxy +14
  • Outside our galaxy entirely +6
  • Lenticular galaxy (a disc with no arms) +6
  • On the zodiac +3
  • Faint fuzzy (mag > 13) +3
Total score 32

2 more points to reach Rare.

Badges

  • Galaxy · +14
  • Outside our galaxy entirely · +6
  • Lenticular galaxy (a disc with no arms) · +6
  • On the zodiac · +3
  • 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

  • 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 16.1 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Pisces.
  • 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 September — that's when to go looking.

Could we get there?

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

Properties

constellation
Psc
dist ly
215533092.9732
dso type
G
hubble
S0
mag
16.05
name
NGC 7402
radial velocity kms
4590
redshift
0.0154
size arcmin
0.42
surface brightness
23.11

About NGC 7402

NGC 7402 is an uncommon galaxy. It lies about 215,533,093 light-years from Earth, sits in the constellation Psc and shines at apparent magnitude 16.05.

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 7402 in the constellation Psc. At apparent magnitude 16.05, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, NGC 7402 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 7402 is an uncommon galaxy

NGC 7402 scores 32 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 2 points would lift it into a rarer tier.

That score comes from 5 science badges — Galaxy, Outside our galaxy entirely, Lenticular galaxy (a disc with no arms), On the zodiac 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.