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Uncommon star 29 EP

HR 2074

RA 89.2338° · Dec 24.2497° · star

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Score breakdown

· 4 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Supergiant +18
  • White A-type star +5
  • Star +3
  • On the zodiac +3
Total score 29

5 more points to reach Rare.

Badges

  • Star · +3
  • On the zodiac · +3
  • White A-type star · +5
  • Supergiant · +18

Trivia

What it actually is

  • Spectral class. Its spectrum reads A0Ia — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
  • Where it is in life. It is a luminous supergiant — among the largest and rarest stars in the galaxy.

Find it in the sky

  • How to spot it. At magnitude 6 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Taurus.
  • 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 December — that's when to go looking.

Its true colour

  • Its true colour. Measured through blue and visual filters it comes out yellow-white (B−V 0.3) — a shade brighter and crisper than our own Sun.
  • Why no green stars. No star ever looks green: a surface hot enough to peak in green also floods out plenty of red and blue, and your eye blends the mixture back to white.

By the numbers

  • Surface temperature. Its colour puts the surface at roughly 7180 K, against the Sun's 5778 K.

Properties

absmag
-13.97
bv
0.346
constellation
Tau
luminosity
33728730.8659
mag
6.03
name
HR 2074
spect
A0Ia

About HR 2074

HR 2074 is an uncommon star. It sits in the constellation Tau, shines at apparent magnitude 6.03 and has spectral type A0Ia.

Its spectrum reads A0Ia — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

How to see it

Look for HR 2074 in the constellation Tau. At apparent magnitude 6.03, it is an easy target for binoculars.

Like any astronomical target, HR 2074 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 2074 is an uncommon star

HR 2074 scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, On the zodiac, White A-type star and Supergiant — 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.