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Common star 21 EP

5 Lac

RA 337.3826° · Dec 47.7069° · star

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Score breakdown

· 3 badges
21 pts · Common
Common 24 pts → Uncommon
  • Distant (>1000 ly) +10
  • Naked-eye visible +8
  • Star +3
Total score 21

3 more points to reach Uncommon.

Badges

  • Star · +3
  • Distant (>1000 ly) · +10
  • Naked-eye visible · +8

Trivia

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 28.9 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 2.6 million years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 16.5 thousand years in a starship at a tenth of light speed.
  • Distance. 1647 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 379.

Saying hello

  • Say hello. A radio message and its reply would take 3295 years round-trip.

Properties

absmag
-4.177
bv
1.679
constellation
Lac
dist ly
1647.2525
mag
4.34
name
5 Lac
spect
M0II

About 5 Lac

5 Lac is a common star. It lies about 1,647.3 light-years from Earth, sits in the constellation Lac, shines at apparent magnitude 4.34 and has spectral type M0II.

5 Lac is a common star worth 21 points across 3 science badges. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.

How to see it

Look for 5 Lac in the constellation Lac. At apparent magnitude 4.34, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 5 Lac 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 5 Lac is a common star

5 Lac scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 3 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, Distant (>1000 ly) and Naked-eye visible — 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.

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Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.