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Common star 20 EP

HIP 24584

RA 79.1165° · Dec 7.2939° · star

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Score breakdown

· 4 badges
20 pts · Common
Common 22 pts → Uncommon
  • In Orion's hunting ground +6
  • Red dwarf +6
  • Cool red M-type star +5
  • Star +3
Total score 20

2 more points to reach Uncommon.

Badges

  • Star · +3
  • In Orion's hunting ground · +6
  • Cool red M-type star · +5
  • Red dwarf · +6

Trivia

Hard to believe

  • True brightness. It pours out about 115.9 thousand 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 M0 — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.

Find it in the sky

  • How to spot it. At magnitude 12.2 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Orion.
  • 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 December — that's when to go looking.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out orange (B−V 1.3) — cooler than the Sun, and the kind of star that burns steadily for tens of billions of years.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 4130 K, against the Sun's 5778 K.

What's in a name

  • Its catalogue. The HIP number comes from Hipparcos, the ESA satellite that between 1989 and 1993 pinned down 118,000 stars precisely enough to triangulate their distances.

Properties

absmag
-7.83
bv
1.293
constellation
Ori
luminosity
118032.0636
mag
12.17
name
HIP 24584
spect
M0

About HIP 24584

HIP 24584 is a common star. It sits in the constellation Ori, shines at apparent magnitude 12.17 and has spectral type M0.

Its spectrum reads M0 — 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 24584 in the constellation Ori. At apparent magnitude 12.17, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, HIP 24584 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 24584 is a common star

HIP 24584 scores 20 points on Spacedle's rarity scale, which places it in the common tier. Another 2 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, In Orion's hunting ground, Cool red M-type star and Red dwarf — 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.