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Epic variable star 53 EP

HD 175893

RA 284.6970° · Dec -29.5050° · star

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Score breakdown

· 7 badges
53 pts · Epic
Epic 78 pts → Anomaly
  • Carbon star (sooty red) +24
  • Toward the galactic centre +8
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • Gently variable +4
  • On the zodiac +3
  • A named variable star +3
Total score 53

25 more points to reach Anomaly.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • Toward the galactic centre · +8
  • On the zodiac · +3
  • Carbon star (sooty red) · +24
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads C — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.
  • It changes. This star does not hold still: its brightness rises and falls on a rhythm of hours, days or years, either pulsing in size or being eclipsed by a companion.

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 9.4 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. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 25.2 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.2
bv
1.16
constellation
Sgr
dist ly
1436.8105
luminosity
28.8403
mag
9.42
name
HD 175893
spect
C
var amplitude
0.35
var designation
V4152
var max
9.256
var min
9.606

About HD 175893

HD 175893 is an epic variable star. It lies about 1,436.8 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 9.42 and has spectral type C.

Its spectrum reads C — a carbon star, wrapped in so much soot that its light is filtered to a deep ruby red.

How to see it

Look for HD 175893 in the constellation Sgr. At apparent magnitude 9.42, a small backyard telescope will bring it into view.

Like any astronomical target, HD 175893 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 175893 is an epic variable star

HD 175893 scores 53 points on Spacedle's rarity scale, which places it in the epic tier. Another 25 points would lift it into a rarer tier.

That score comes from 7 science badges — Variable star, Distant (over 1,000 light-years), Toward the galactic centre, On the zodiac, Carbon star (sooty red), Gently variable and A named variable 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.