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Trash star 11 EP

25The UMa

RA 143.2157° · Dec 51.6773° · 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. ≈ 772.5 thousand years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 68.6 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 440 years in a starship at a tenth of light speed.
  • Distance. 44 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1982.

Saying hello

  • Say hello. A radio message and its reply would take 87.9 years round-trip.

Properties

absmag
2.522
bv
0.475
constellation
UMa
dist ly
43.9622
mag
3.17
name
25The UMa
spect
F6IV

About 25The UMa

25The UMa is a trash star. It lies about 44 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 3.17 and has spectral type F6IV.

25The UMa 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 25The UMa in the constellation UMa. At apparent magnitude 3.17, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 25The UMa 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 25The UMa is a trash star

25The UMa 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.