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Epic cluster 60 EP

NGC 6494

RA 269.2699° · Dec -18.9853° · openngc

Real photograph of NGC 6494 📷 Real photo
Chuck Ayoub (CC0)
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Score breakdown

· 9 badges
60 pts · Epic
Epic 78 pts → Anomaly
  • Messier object +12
  • Coming towards us +10
  • Toward the galactic centre +8
  • Star cluster +7
  • Distant (over 1,000 light-years) +6
  • Bright deep-sky object +6
  • Big on the sky +5
  • Open cluster +3
  • On the zodiac +3
Total score 60

18 more points to reach Anomaly.

Badges

  • Star cluster · +7
  • Distant (over 1,000 light-years) · +6
  • Messier object · +12
  • Bright deep-sky object · +6
  • Open cluster · +3
  • Toward the galactic centre · +8
  • On the zodiac · +3
  • Big on the sky · +5
  • Coming towards us · +10

Trivia

Hard to believe

  • Messier object. One of the 110 showpieces of the Messier list — catalogued as M23.

What it actually is

  • What it actually is. An open cluster: a few hundred stars born together out of one collapsing cloud, still drifting along in loose formation.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.
  • Sense of scale. Gravity is not strong enough to hold it. Within a few hundred million years these siblings will be scattered right around the galaxy.

Find it in the sky

  • How to spot it. At magnitude 5.5 you can see it with your own eyes from a dark site, over in Sagittarius.
  • 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 June — that's when to go looking.

Could we get there?

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

Properties

constellation
Sgr
dist ly
2408.8331
dso type
OCl
mag
5.5
messier
yes
messier number
023
name
NGC 6494
radial velocity kms
-32
size arcmin
16.8

About NGC 6494

NGC 6494 is an epic cluster. It lies about 2,408.8 light-years from Earth, sits in the constellation Sgr and shines at apparent magnitude 5.5.

An open cluster: a few hundred stars born together out of one collapsing cloud, still drifting along in loose formation.

How to see it

Look for NGC 6494 in the constellation Sgr. At apparent magnitude 5.5, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, NGC 6494 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 6494 is an epic cluster

NGC 6494 scores 60 points on Spacedle's rarity scale, which places it in the epic tier. Another 18 points would lift it into a rarer tier.

That score comes from 9 science badges — Star cluster, Distant (over 1,000 light-years), Messier object, Bright deep-sky object, Open cluster, Toward the galactic centre, On the zodiac and Big on the sky — 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.