← Back to dex
Trash variable star 5 EP

HD 129750

RA 221.9881° · Dec -68.5197° · star

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

Computing the sky for your location…

Score breakdown

· 1 badge
5 pts · Trash
Trash 15 pts → Common
  • Variable star +5
Total score 5

10 more points to reach Common.

Badges

  • Variable star · +5

Trivia

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 14.3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.3 million years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 8113 years in a starship at a tenth of light speed.
  • Distance. 811 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1215.

Saying hello

  • Say hello. A radio message and its reply would take 1623 years round-trip.

Properties

absmag
0.151
bv
-0.046
constellation
Cir
dist ly
811.3333
mag
7.13
name
HD 129750
spect
B9IVp (Si)

About HD 129750

HD 129750 is a trash variable star. It lies about 811.3 light-years from Earth, sits in the constellation Cir, shines at apparent magnitude 7.13 and has spectral type B9IVp (Si).

HD 129750 is a trash variable star worth 5 points across 1 science badge. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.

How to see it

Look for HD 129750 in the constellation Cir. At apparent magnitude 7.13, it is an easy target for binoculars.

Like any astronomical target, HD 129750 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 129750 is a trash variable star

HD 129750 scores 5 points on Spacedle's rarity scale, which places it in the trash tier. Another 10 points would lift it into a rarer tier.

That score comes from 1 science badge — Variable 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.

spacedle A daily roll through the real universe. © 2026 spacedle. Buy me a coffee

Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.