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Trash star 13 EP

HIP 39337

RA 120.6207° · Dec -2.1357° · star

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Score breakdown

· 3 badges
13 pts · Trash
Trash 15 pts → Common
  • Deep red star +8
  • Star +3
  • Main-sequence star +2
Total score 13

2 more points to reach Common.

Badges

  • Star · +3
  • Main-sequence star · +2
  • Deep red star · +8

Trivia

Hard to believe

  • True brightness. It pours out about 1.9 million times as much light as the Sun. It only looks ordinary because it is so far away.

What it actually is

  • Spectral class. Its spectrum reads NV... — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

Find it in the sky

  • How to spot it. At magnitude 9.1 you'll want a small backyard telescope, over in Monoceros.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around January — that's when to go looking.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out deep orange-red (B−V 2.7) — one of the coolest surfaces a star can have while still fusing.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 2560 K, against the Sun's 5778 K.

Properties

absmag
-10.86
bv
2.73
constellation
Mon
luminosity
1923091.7289
mag
9.14
name
HIP 39337
spect
NV...

About HIP 39337

HIP 39337 is a trash star. It sits in the constellation Mon, shines at apparent magnitude 9.14 and has spectral type NV....

Its spectrum reads NV... — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.

How to see it

Look for HIP 39337 in the constellation Mon. At apparent magnitude 9.14, a small backyard telescope will bring it into view.

Like any astronomical target, HIP 39337 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 39337 is a trash star

HIP 39337 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, Main-sequence star and Deep red 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.