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Trash variable star 5 EP

HR 8731

RA 344.2688° · Dec 48.6841° · star

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Score breakdown

· 1 badge
5 pts · Trash
Trash 15 pts → Common
  • Variable star +5
Total score 5

10 more points to reach Common.

Badges

  • Variable star · +5

Trivia

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 14.4 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. ≈ 8216 years in a starship at a tenth of light speed.
  • Distance. 822 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1204.

Saying hello

  • Say hello. A radio message and its reply would take 1643 years round-trip.

Properties

absmag
-1.666
bv
-0.102
constellation
Lac
dist ly
821.5517
mag
5.34
name
HR 8731
spect
B4IIIpe

About HR 8731

HR 8731 is a trash variable star. It lies about 821.6 light-years from Earth, sits in the constellation Lac, shines at apparent magnitude 5.34 and has spectral type B4IIIpe.

HR 8731 is a trash variable star worth 5 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 8731 in the constellation Lac. At apparent magnitude 5.34, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 8731 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 8731 is a trash variable star

HR 8731 scores 5 points on Spacedle's rarity scale, which places it in the trash tier. Another 10 points would lift it into a rarer tier.

That score comes from 1 science badge — Variable 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.