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Common star 20 EP

GL Gl 119B

RA 44.1454° · Dec 55.4416° · star

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Score breakdown

· 4 badges
20 pts · Common
Common 22 pts → Uncommon
  • Binary star +6
  • Red dwarf +6
  • Cool red M-type star +5
  • Star +3
Total score 20

2 more points to reach Uncommon.

Badges

  • Star · +3
  • Binary star · +6
  • Cool red M-type star · +5
  • Red dwarf · +6

Trivia

What makes it special

  • Not one star but two. It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

Hard to believe

  • True brightness. It pours out about 343.6 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 M1 — 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 11 you'll want a small backyard telescope, over in Perseus.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around November — that's when to go looking.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out orange (B−V 1.4) — 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 3980 K, against the Sun's 5778 K.

Properties

absmag
-9.01
binary
yes
bv
1.384
constellation
Per
luminosity
349945.167
mag
10.99
name
GL Gl 119B
spect
M1

About GL Gl 119B

GL Gl 119B is a common star. It sits in the constellation Per, shines at apparent magnitude 10.99 and has spectral type M1.

It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

How to see it

Look for GL Gl 119B in the constellation Per. At apparent magnitude 10.99, a small backyard telescope will bring it into view.

Like any astronomical target, GL Gl 119B 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 GL Gl 119B is a common star

GL Gl 119B 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, Binary star, 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.