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Trash star 3 EP

HR 7239

RA 286.7172° · Dec -16.2293° · star

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Score breakdown

· 1 badge
3 pts · Trash
Trash 15 pts → Common
  • Star +3
Total score 3

12 more points to reach Common.

Badges

  • Star · +3

Trivia

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 14.8 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.3 million years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 8450 years in a starship at a tenth of light speed.
  • Distance. 845 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1181.

Saying hello

  • Say hello. A radio message and its reply would take 1690 years round-trip.

Properties

absmag
-1.067
bv
-0.025
constellation
Sgr
dist ly
844.9639
mag
6
name
HR 7239
spect
B7V

About HR 7239

HR 7239 is a trash star. It lies about 845 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 6 and has spectral type B7V.

HR 7239 is a trash star worth 3 points across 1 science badge. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.

How to see it

Look for HR 7239 in the constellation Sgr. At apparent magnitude 6, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 7239 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 HR 7239 is a trash star

HR 7239 scores 3 points on Spacedle's rarity scale, which places it in the trash tier. Another 12 points would lift it into a rarer tier.

That score comes from 1 science badge — Star — 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.