Trash star 11 EP

HD 128731

RA 219.5604° · Dec 14.0289° · star

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Score breakdown

· 2 badges

11 pts · Trash

Trash 15 pts → Common

Sun-like G-type star +8
Star +3

Total score 11

4 more points to reach Common.

Badges

Star · +3
Sun-like G-type star · +8

Trivia

What it actually is

Spectral class. Its spectrum reads G5 — a G-type star: the very same spectral class as our own Sun.

Sense of scale

In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

How to spot it. At magnitude 8.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Boötes.
Northern sky. It rides the northern half of the sky — an easier target the further north you are.
Best time of year. It stands highest in the middle of the night around April — that's when to go looking.

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 2.7 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 240.6 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag: 4.889
bv: 0.707
constellation: Boo
dist ly: 154.0653
luminosity: 0.9647
mag: 8.26
name: HD 128731
spect: G5

Nearby objects

About HD 128731

HD 128731 is a trash star. It lies about 154.1 light-years from Earth, sits in the constellation Boo, shines at apparent magnitude 8.26 and has spectral type G5.

Its spectrum reads G5 — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 128731 in the constellation Boo. At apparent magnitude 8.26, it is an easy target for binoculars.

Like any astronomical target, HD 128731 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 HD 128731 is a trash star

HD 128731 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 Sun-like G-type 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.