Trash star 13 EP

HD 70391

RA 125.2272° · Dec -22.4505° · star

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Score breakdown

· 3 badges

13 pts · Trash

Trash 15 pts → Common

White A-type star +5
Subgiant (leaving the main sequence) +5
Star +3

Total score 13

2 more points to reach Common.

Badges

Star · +3
White A-type star · +5
Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

Spectral class. Its spectrum reads A4IV — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
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 8.2 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Puppis.
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 January — 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. ≈ 11.3 million years at Voyager 1's speed (17 km/s).

Properties

absmag: 1.774
bv: 0.206
constellation: Pup
dist ly: 640.7781
luminosity: 16.9981
mag: 8.24
name: HD 70391
spect: A4IV

Nearby objects

About HD 70391

HD 70391 is a trash star. It lies about 640.8 light-years from Earth, sits in the constellation Pup, shines at apparent magnitude 8.24 and has spectral type A4IV.

Its spectrum reads A4IV — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

How to see it

Look for HD 70391 in the constellation Pup. At apparent magnitude 8.24, it is an easy target for binoculars.

Like any astronomical target, HD 70391 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 70391 is a trash star

HD 70391 scores 13 points on Spacedle's rarity scale, which places it in the trash tier. Another 2 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, White A-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.