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Rare star 38 EP

HD 237006

RA 42.2868° · Dec 58.0135° · star

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Score breakdown

· 5 badges
38 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Deep red star +8
  • Cool red M-type star +5
  • Never sets (northern circumpolar) +4
  • Star +3
Total score 38

12 more points to reach Epic.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • Cool red M-type star · +5
  • Supergiant · +18
  • Deep red star · +8

Trivia

Hard to believe

  • True brightness. It pours out about 1.9 million 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 M1Ib+... — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
  • Where it is in life. It is a supergiant, hundreds of times wider than the Sun.

Find it in the sky

  • How to spot it. At magnitude 9.2 you'll want a small backyard telescope, over in Cassiopeia.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around November — 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 1.4) — one of the coolest surfaces a star can have while still fusing.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 3930 K, against the Sun's 5778 K.

Properties

absmag
-10.85
bv
1.41
constellation
Cas
luminosity
1905460.718
mag
9.15
name
HD 237006
spect
M1Ib+...

About HD 237006

HD 237006 is a rare star. It sits in the constellation Cas, shines at apparent magnitude 9.15 and has spectral type M1Ib+....

Its spectrum reads M1Ib+... — 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 HD 237006 in the constellation Cas. At apparent magnitude 9.15, a small backyard telescope will bring it into view.

Like any astronomical target, HD 237006 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 237006 is a rare star

HD 237006 scores 38 points on Spacedle's rarity scale, which places it in the rare tier. Another 12 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Never sets (northern circumpolar), Cool red M-type star, Supergiant 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.