← Back to dex
Trash star 11 EP

Eta Cha

RA 130.3316° · Dec -78.9634° · star

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

Computing the sky for your location…

Score breakdown

· 2 badges
11 pts · Trash
Trash 15 pts → Common
  • Naked-eye visible +8
  • Star +3
Total score 11

4 more points to reach Common.

Badges

  • Star · +3
  • Naked-eye visible · +8

Trivia

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 5.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 483.6 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 3097 years in a starship at a tenth of light speed.
  • Distance. 310 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1716.

Saying hello

  • Say hello. A radio message and its reply would take 619 years round-trip.

Properties

absmag
0.572
bv
-0.101
constellation
Cha
dist ly
309.7399
mag
5.46
name
Eta Cha
spect
B9IV

About Eta Cha

Eta Cha is a trash star. It lies about 309.7 light-years from Earth, sits in the constellation Cha, shines at apparent magnitude 5.46 and has spectral type B9IV.

Eta Cha is a trash star worth 11 points across 2 science badges. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.

How to see it

Look for Eta Cha in the constellation Cha. At apparent magnitude 5.46, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Eta Cha 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 Eta Cha is a trash star

Eta Cha 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 2 science badges — Star and Naked-eye visible — 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.