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Rare star 45 EP

HD 154813

RA 257.7891° · Dec -58.0255° · star

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Score breakdown

· 5 badges
45 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Intrinsically luminous (Mv < −2) +10
  • Sun-like G-type star +8
  • Distant (over 1,000 light-years) +6
  • Star +3
Total score 45

5 more points to reach Epic.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Sun-like G-type star · +8
  • Supergiant · +18
  • Intrinsically luminous (Mv < −2) · +10

Trivia

What it actually is

  • Spectral class. Its spectrum reads G5/G6Ib — a G-type star: the very same spectral class as our own 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 6.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Ara.
  • 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. ≈ 36.3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 3.2 million years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
-2.237
bv
1.288
constellation
Ara
dist ly
2064.2785
luminosity
683.5968
mag
6.77
name
HD 154813
spect
G5/G6Ib

About HD 154813

HD 154813 is a rare star. It lies about 2,064.3 light-years from Earth, sits in the constellation Ara, shines at apparent magnitude 6.77 and has spectral type G5/G6Ib.

Its spectrum reads G5/G6Ib — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 154813 in the constellation Ara. At apparent magnitude 6.77, it is an easy target for binoculars.

Like any astronomical target, HD 154813 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 154813 is a rare star

HD 154813 scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 5 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Distant (over 1,000 light-years), Sun-like G-type star, Supergiant and Intrinsically luminous (Mv < −2) — 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.