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Epic variable star 69 EP

HR 7296

RA 289.1365° · Dec -33.5223° · star

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Score breakdown

· 8 badges
69 pts · Epic
Epic 78 pts → Anomaly
  • Carbon star (sooty red) +24
  • Intrinsically luminous (Mv < −2) +10
  • Strongly variable +10
  • Toward the galactic centre +8
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • On the zodiac +3
  • A named variable star +3
Total score 69

9 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
  • Intrinsically luminous (Mv < −2) · +10
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads Cp — 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 6.6 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 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. ≈ 44.4 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-2.867
bv
0.692
constellation
Sgr
dist ly
2528.3411
luminosity
1221.2371
mag
6.58
name
HR 7296
spect
Cp
var amplitude
1.74
var designation
RY
var max
6.092
var min
7.832

About HR 7296

HR 7296 is an epic variable star. It lies about 2,528.3 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 6.58 and has spectral type Cp.

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

How to see it

Look for HR 7296 in the constellation Sgr. At apparent magnitude 6.58, it is an easy target for binoculars.

Like any astronomical target, HR 7296 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 HR 7296 is an epic variable star

HR 7296 scores 69 points on Spacedle's rarity scale, which places it in the epic tier. Another 9 points would lift it into a rarer tier.

That score comes from 8 science badges — Variable star, Distant (over 1,000 light-years), Toward the galactic centre, On the zodiac, Carbon star (sooty red), Intrinsically luminous (Mv < −2), Strongly 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.