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Rare star 48 EP

HD 171736

RA 279.2797° · Dec -19.2094° · star

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Score breakdown

· 6 badges
48 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Toward the galactic centre +8
  • Sun-like G-type star +8
  • Deep red star +8
  • Star +3
  • On the zodiac +3
Total score 48

2 more points to reach Epic.

Badges

  • Star · +3
  • Toward the galactic centre · +8
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Supergiant · +18
  • Deep red star · +8

Trivia

What it actually is

  • Spectral class. Its spectrum reads G8Ib — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a supergiant, hundreds of times wider than the Sun.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 7 it is just past naked-eye reach — ordinary binoculars will pull it in, 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.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 17.3 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-0.391
bv
1.585
constellation
Sgr
dist ly
985.3655
luminosity
124.8533
mag
7.01
name
HD 171736
spect
G8Ib

About HD 171736

HD 171736 is a rare star. It lies about 985.4 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 7.01 and has spectral type G8Ib.

Its spectrum reads G8Ib — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 171736 in the constellation Sgr. At apparent magnitude 7.01, it is an easy target for binoculars.

Like any astronomical target, HD 171736 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 171736 is a rare star

HD 171736 scores 48 points on Spacedle's rarity scale, which places it in the rare tier. Another 2 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Toward the galactic centre, On the zodiac, Sun-like G-type star, Supergiant 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.