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Trash star 11 EP

22Tau7Ser

RA 235.4780° · Dec 18.4640° · 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. ≈ 3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 270.3 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 1731 years in a starship at a tenth of light speed.
  • Distance. 173 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1853.

Saying hello

  • Say hello. A radio message and its reply would take 346 years round-trip.

Properties

absmag
2.175
bv
0.207
constellation
Ser
dist ly
173.119
mag
5.8
name
22Tau7Ser
spect
A2m

About 22Tau7Ser

22Tau7Ser is a trash star. It lies about 173.1 light-years from Earth, sits in the constellation Ser, shines at apparent magnitude 5.8 and has spectral type A2m.

22Tau7Ser 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 22Tau7Ser in the constellation Ser. At apparent magnitude 5.8, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 22Tau7Ser 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 22Tau7Ser is a trash star

22Tau7Ser 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.