← Back to dex
Trash star 6 EP

HD 233511

RA 124.8441° · Dec 54.0860° · star

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 2 badges
6 pts · Trash
Trash 15 pts → Common
  • Star +3
  • Yellow-white F-type star +3
Total score 6

9 more points to reach Common.

Badges

  • Star · +3
  • Yellow-white F-type star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads sdF6 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a subdwarf: an old, metal-poor star from the galaxy's early days, a little smaller and fainter than a main-sequence star of the same colour.

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 9.7 you'll want a small backyard telescope, over in Lynx.
  • 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 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. ≈ 5.5 million years at Voyager 1's speed (17 km/s).

Properties

absmag
4.805
bv
0.484
constellation
Lyn
dist ly
315.1267
luminosity
1.0423
mag
9.73
name
HD 233511
spect
sdF6

About HD 233511

HD 233511 is a trash star. It lies about 315.1 light-years from Earth, sits in the constellation Lyn, shines at apparent magnitude 9.73 and has spectral type sdF6.

Its spectrum reads sdF6 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HD 233511 in the constellation Lyn. At apparent magnitude 9.73, a small backyard telescope will bring it into view.

Like any astronomical target, HD 233511 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 233511 is a trash star

HD 233511 scores 6 points on Spacedle's rarity scale, which places it in the trash tier. Another 9 points would lift it into a rarer tier.

That score comes from 2 science badges — Star and Yellow-white F-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.