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Rare star 48 EP

HIP 84716

RA 259.7522° · Dec -38.8142° · star

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Score breakdown

· 4 badges
48 pts · Rare
Rare 50 pts → Epic
  • Wolf-Rayet star (shedding itself) +34
  • Deep red star +8
  • Star +3
  • On the zodiac +3
Total score 48

2 more points to reach Epic.

Badges

  • Star · +3
  • On the zodiac · +3
  • Wolf-Rayet star (shedding itself) · +34
  • Deep red star · +8

Trivia

Hard to believe

  • True brightness. It pours out about 331.1 thousand times as much light as the Sun. It only looks ordinary because it is so far away.

What it actually is

  • Spectral class. Its spectrum reads WN... — a Wolf-Rayet star: a stellar monster shedding its own outer layers in a ferocious wind, on its way to a supernova.

Find it in the sky

  • How to spot it. At magnitude 11 you'll want a small backyard telescope, 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.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out deep orange-red (B−V 1.5) — one of the coolest surfaces a star can have while still fusing.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 3830 K, against the Sun's 5778 K.

What's in a name

  • Its catalogue. The HIP number comes from Hipparcos, the ESA satellite that between 1989 and 1993 pinned down 118,000 stars precisely enough to triangulate their distances.

Properties

absmag
-8.97
bv
1.474
constellation
Sco
luminosity
337287.3087
mag
11.03
name
HIP 84716
spect
WN...

About HIP 84716

HIP 84716 is a rare star. It sits in the constellation Sco, shines at apparent magnitude 11.03 and has spectral type WN....

Its spectrum reads WN... — a Wolf-Rayet star: a stellar monster shedding its own outer layers in a ferocious wind, on its way to a supernova.

How to see it

Look for HIP 84716 in the constellation Sco. At apparent magnitude 11.03, a small backyard telescope will bring it into view.

Like any astronomical target, HIP 84716 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 HIP 84716 is a rare star

HIP 84716 scores 48 points on Spacedle's rarity scale, which places it in the rare tier. Another 2 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, On the zodiac, Wolf-Rayet star (shedding itself) and Deep red 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.