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Trash star 11 EP

5Eta CMi

RA 112.0086° · Dec 6.9420° · star

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Score breakdown

· 2 badges
11 pts · Trash
Trash 15 pts → Common
  • Naked-eye visible +8
  • Star +3
Total score 11

4 more points to reach Common.

Badges

  • Star · +3
  • Naked-eye visible · +8

Trivia

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 5.6 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 496.8 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 3182 years in a starship at a tenth of light speed.
  • Distance. 318 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1708.

Saying hello

  • Say hello. A radio message and its reply would take 636 years round-trip.

Properties

absmag
0.274
bv
0.221
constellation
CMi
dist ly
318.2011
mag
5.22
name
5Eta CMi
spect
F0III

About 5Eta CMi

5Eta CMi is a trash star. It lies about 318.2 light-years from Earth, sits in the constellation CMi, shines at apparent magnitude 5.22 and has spectral type F0III.

5Eta CMi is a trash star worth 11 points across 2 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 5Eta CMi in the constellation CMi. At apparent magnitude 5.22, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 5Eta CMi 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 5Eta CMi is a trash star

5Eta CMi scores 11 points on Spacedle's rarity scale, which places it in the trash tier. Another 4 points would lift it into a rarer tier.

That score comes from 2 science badges — Star 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.