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Uncommon star 25 EP

GL Gl 773A

RA 299.3318° · Dec -12.5680° · star

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Score breakdown

· 6 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Toward the galactic centre +8
  • Binary star +6
  • Star +3
  • On the zodiac +3
  • Orange K-type star +3
  • Main-sequence star +2
Total score 25

9 more points to reach Rare.

Badges

  • Star · +3
  • Binary star · +6
  • Toward the galactic centre · +8
  • On the zodiac · +3
  • Orange K-type star · +3
  • Main-sequence star · +2

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.

What it actually is

  • Spectral class. Its spectrum reads K4V — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 9.3 you'll want a small backyard telescope, over in Sagittarius.
  • 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 July — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag
7.933
binary
yes
bv
1.318
constellation
Sgr
dist ly
60.9181
luminosity
0.0585
mag
9.29
name
GL Gl 773A
spect
K4V

About GL Gl 773A

GL Gl 773A is an uncommon star. It lies about 60.9 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 9.29 and has spectral type K4V.

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 773A in the constellation Sgr. At apparent magnitude 9.29, a small backyard telescope will bring it into view.

Like any astronomical target, GL Gl 773A 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 773A is an uncommon star

GL Gl 773A scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Binary star, Toward the galactic centre, On the zodiac, Orange K-type star and Main-sequence 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.