Trash star 14 EP

HD 77173

RA 135.4257° · Dec 26.3905° · star

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Score breakdown

· 4 badges

14 pts · Trash

Trash 15 pts → Common

Subgiant (leaving the main sequence) +5
Star +3
On the zodiac +3
Yellow-white F-type star +3

Total score 14

1 more point to reach Common.

Badges

Star · +3
On the zodiac · +3
Yellow-white F-type star · +3
Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

Spectral class. Its spectrum reads F0IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Where it is in life. It is a subgiant, caught in the act of leaving the main sequence as the hydrogen in its core runs out.

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 Cancer.
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 February — 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. ≈ 7.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag: 2.614
bv: 0.327
constellation: Cnc
dist ly: 447.4019
luminosity: 7.8415
mag: 8.3
name: HD 77173
spect: F0IV

Nearby objects

About HD 77173

HD 77173 is a trash star. It lies about 447.4 light-years from Earth, sits in the constellation Cnc, shines at apparent magnitude 8.3 and has spectral type F0IV.

Its spectrum reads F0IV — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 77173 in the constellation Cnc. At apparent magnitude 8.3, it is an easy target for binoculars.

Like any astronomical target, HD 77173 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 77173 is a trash star

HD 77173 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 4 science badges — Star, On the zodiac, Yellow-white F-type star and Subgiant (leaving the main sequence) — 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.