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Rare variable star 45 EP

HR 1492

RA 69.1902° · Dec -62.0772° · star

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Score breakdown

· 7 badges
45 pts · Rare
Rare 50 pts → Epic
  • Strongly variable +10
  • Naked-eye visible +8
  • Deep red star +8
  • Red dwarf +6
  • Variable star +5
  • Cool red M-type star +5
  • A named variable star +3
Total score 45

5 more points to reach Epic.

Badges

  • Variable star · +5
  • Naked-eye visible · +8
  • Cool red M-type star · +5
  • Deep red star · +8
  • Red dwarf · +6
  • Strongly variable · +10
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads M8e — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
  • 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 5.6 you can see it with your own eyes from a dark site, over in Dorado.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around November — 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. ≈ 3.1 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.903
bv
1.5
constellation
Dor
dist ly
178.1301
luminosity
15.0938
mag
5.59
name
HR 1492
spect
M8e
var amplitude
0.76
var designation
R
var max
5.107
var min
5.867

About HR 1492

HR 1492 is a rare variable star. It lies about 178.1 light-years from Earth, sits in the constellation Dor, shines at apparent magnitude 5.59 and has spectral type M8e.

Its spectrum reads M8e — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.

How to see it

Look for HR 1492 in the constellation Dor. At apparent magnitude 5.59, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 1492 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 1492 is a rare variable star

HR 1492 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 7 science badges — Variable star, Naked-eye visible, Cool red M-type star, Deep red star, Red dwarf, 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.