Trash star 11 EP

HD 153775

RA 256.3729° · Dec -62.6511° · star

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Score breakdown

· 3 badges

11 pts · Trash

Trash 15 pts → Common

Hot blue B-type star +6
Star +3
Main-sequence star +2

Total score 11

4 more points to reach Common.

Badges

Star · +3
Hot blue B-type star · +6
Main-sequence star · +2

Trivia

What it actually is

Spectral class. Its spectrum reads B9.5V — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.
Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

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 8.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Ara.
Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
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. ≈ 13.8 million years at Voyager 1's speed (17 km/s).

Properties

absmag: 1.945
bv: 0.02
constellation: Ara
dist ly: 784.0288
luminosity: 14.5211
mag: 8.85
name: HD 153775
spect: B9.5V

Nearby objects

About HD 153775

HD 153775 is a trash star. It lies about 784 light-years from Earth, sits in the constellation Ara, shines at apparent magnitude 8.85 and has spectral type B9.5V.

Its spectrum reads B9.5V — a blue-white B-type star, with a surface tens of thousands of degrees hot and a life measured in tens of millions of years.

How to see it

Look for HD 153775 in the constellation Ara. At apparent magnitude 8.85, it is an easy target for binoculars.

Like any astronomical target, HD 153775 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 153775 is a trash star

HD 153775 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 3 science badges — Star, Hot blue B-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.