Uncommon star 22 EP

HD 318786

RA 270.3966° · Dec -30.8120° · star

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Score breakdown

· 4 badges

22 pts · Uncommon

Uncommon 34 pts → Rare

Toward the galactic centre +8
Sun-like G-type star +8
Star +3
On the zodiac +3

Total score 22

12 more points to reach Rare.

Badges

Star · +3
Toward the galactic centre · +8
On the zodiac · +3
Sun-like G-type star · +8

Trivia

Hard to believe

True brightness. It pours out about 398.1 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 G0 — a G-type star: the very same spectral class as our own Sun.

Find it in the sky

How to spot it. At magnitude 10.8 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 June — that's when to go looking.

Its true colour

Its true colour. Measured through blue and visual filters it comes out yellow (B−V 0.7) — almost exactly the Sun's own shade — a stellar twin in colour, if not in size.
Why no green stars. No star ever looks green: a surface hot enough to peak in green also floods out plenty of red and blue, and your eye blends the mixture back to white.

By the numbers

Surface temperature. Its colour puts the surface at roughly 5740 K, against the Sun's 5778 K.

Properties

absmag: -9.17
bv: 0.661
constellation: Sgr
luminosity: 405508.5354
mag: 10.83
name: HD 318786
spect: G0

Nearby objects

About HD 318786

HD 318786 is an uncommon star. It sits in the constellation Sgr, shines at apparent magnitude 10.83 and has spectral type G0.

Its spectrum reads G0 — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 318786 in the constellation Sgr. At apparent magnitude 10.83, a small backyard telescope will bring it into view.

Like any astronomical target, HD 318786 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 HD 318786 is an uncommon star

HD 318786 scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Toward the galactic centre, On the zodiac and Sun-like G-type 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.