← Back to dex
Trash star 11 EP

Tau2Lup

RA 216.5450° · Dec -45.3793° · 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. ≈ 5.6 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 498.3 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 3191 years in a starship at a tenth of light speed.
  • Distance. 319 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1707.

Saying hello

  • Say hello. A radio message and its reply would take 638 years round-trip.

Properties

absmag
-0.623
bv
0.434
constellation
Lup
dist ly
319.1352
mag
4.33
name
Tau2Lup
spect
A7:+...

About Tau2Lup

Tau2Lup is a trash star. It lies about 319.1 light-years from Earth, sits in the constellation Lup, shines at apparent magnitude 4.33 and has spectral type A7:+....

Tau2Lup 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 Tau2Lup in the constellation Lup. At apparent magnitude 4.33, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Tau2Lup 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 Tau2Lup is a trash star

Tau2Lup 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.