Trash star 8 EP

HD 170023

RA 277.4103° · Dec -46.7176° · star

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Score breakdown

· 3 badges

8 pts · Trash

Trash 15 pts → Common

Star +3
Yellow-white F-type star +3
Main-sequence star +2

Total score 8

7 more points to reach Common.

Badges

Star · +3
Yellow-white F-type star · +3
Main-sequence star · +2

Trivia

What it actually is

Spectral class. Its spectrum reads F8/G0V — an F-type star — a little hotter, whiter and shorter-lived than the 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 8.9 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Telescopium.
Southern sky. It rides the southern half of the sky — an easier target the further south you are.
Best time of year. It stands highest in the middle of the night around June — 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. ≈ 8.2 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 727.5 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag: 3.095
bv: 0.563
constellation: Tel
dist ly: 465.937
luminosity: 5.035
mag: 8.87
name: HD 170023
spect: F8/G0V

Nearby objects

About HD 170023

HD 170023 is a trash star. It lies about 465.9 light-years from Earth, sits in the constellation Tel, shines at apparent magnitude 8.87 and has spectral type F8/G0V.

Its spectrum reads F8/G0V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 170023 in the constellation Tel. At apparent magnitude 8.87, it is an easy target for binoculars.

Like any astronomical target, HD 170023 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 170023 is a trash star

HD 170023 scores 8 points on Spacedle's rarity scale, which places it in the trash tier. Another 7 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, Yellow-white F-type star and Main-sequence 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.