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Trash star 13 EP

HIP 29958

RA 94.5922° · Dec -13.8688° · star

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Score breakdown

· 3 badges
13 pts · Trash
Trash 15 pts → Common
  • Cool red M-type star +5
  • Subgiant (leaving the main sequence) +5
  • Star +3
Total score 13

2 more points to reach Common.

Badges

  • Star · +3
  • Cool red M-type star · +5
  • Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads M0IV — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
  • Where it is in life. It is a subgiant, caught in the act of leaving the main sequence as the hydrogen in its core runs out.

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 9.9 you'll want a small backyard telescope, over in Canis Major.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around December — 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. ≈ 1.8 million years at Voyager 1's speed (17 km/s).

Properties

absmag
7.453
bv
1.197
constellation
CMa
dist ly
100.1707
luminosity
0.0909
mag
9.89
name
HIP 29958
spect
M0IV

About HIP 29958

HIP 29958 is a trash star. It lies about 100.2 light-years from Earth, sits in the constellation CMa, shines at apparent magnitude 9.89 and has spectral type M0IV.

Its spectrum reads M0IV — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.

How to see it

Look for HIP 29958 in the constellation CMa. At apparent magnitude 9.89, a small backyard telescope will bring it into view.

Like any astronomical target, HIP 29958 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 HIP 29958 is a trash star

HIP 29958 scores 13 points on Spacedle's rarity scale, which places it in the trash tier. Another 2 points would lift it into a rarer tier.

That score comes from 3 science badges — Star, Cool red M-type star and Subgiant (leaving the main sequence) — 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.