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Uncommon star 25 EP

HD 153673

RA 255.5346° · Dec -30.6519° · star

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Score breakdown

· 5 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Sun-like G-type star +8
  • Distant (over 1,000 light-years) +6
  • Subgiant (leaving the main sequence) +5
  • Star +3
  • On the zodiac +3
Total score 25

9 more points to reach Rare.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Subgiant (leaving the main sequence) · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads G8IV — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a subgiant, caught in the act of leaving the main sequence as the hydrogen in its core runs out.

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 8.4 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Scorpius.
  • 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. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 21.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.492
bv
1.113
constellation
Sco
dist ly
1244.8703
luminosity
55.3605
mag
8.4
name
HD 153673
spect
G8IV

About HD 153673

HD 153673 is an uncommon star. It lies about 1,244.9 light-years from Earth, sits in the constellation Sco, shines at apparent magnitude 8.4 and has spectral type G8IV.

Its spectrum reads G8IV — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 153673 in the constellation Sco. At apparent magnitude 8.4, it is an easy target for binoculars.

Like any astronomical target, HD 153673 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 153673 is an uncommon star

HD 153673 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 5 science badges — Star, Distant (over 1,000 light-years), On the zodiac, Sun-like G-type star and Subgiant (leaving the main sequence) — 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.