Trash star 14 EP

HD 100509

RA 173.5344° · Dec 14.8914° · star

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Score breakdown

· 3 badges

14 pts · Trash

Trash 15 pts → Common

Sun-like G-type star +8
Star +3
On the zodiac +3

Total score 14

1 more point to reach Common.

Badges

Star · +3
On the zodiac · +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 8.6 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Leo.
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 March — 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. ≈ 4.9 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 431.9 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag: 3.968
bv: 0.57
constellation: Leo
dist ly: 276.6377
luminosity: 2.2532
mag: 8.61
name: HD 100509
spect: G5

Nearby objects

About HD 100509

HD 100509 is a trash star. It lies about 276.6 light-years from Earth, sits in the constellation Leo, shines at apparent magnitude 8.61 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 100509 in the constellation Leo. At apparent magnitude 8.61, it is an easy target for binoculars.

Like any astronomical target, HD 100509 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 100509 is a trash star

HD 100509 scores 14 points on Spacedle's rarity scale, which places it in the trash tier. Another 1 point would lift it into a rarer tier.

That score comes from 3 science badges — Star, On the zodiac 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.