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Common star 18 EP

HR 1978

RA 86.2575° · Dec 4.0081° · star

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Score breakdown

· 4 badges
18 pts · Common
Common 22 pts → Uncommon
  • In Orion's hunting ground +6
  • Giant star +6
  • Star +3
  • Yellow-white F-type star +3
Total score 18

4 more points to reach Uncommon.

Badges

  • Star · +3
  • In Orion's hunting ground · +6
  • Yellow-white F-type star · +3
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads F0III:n — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a giant. It has already exhausted its core hydrogen and swollen up enormously in response.

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 6.1 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Orion.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around December — 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. ≈ 3.4 million years at Voyager 1's speed (17 km/s).

Properties

absmag
2.241
bv
0.32
constellation
Ori
dist ly
191.9696
luminosity
11.0561
mag
6.09
name
HR 1978
spect
F0III:n

About HR 1978

HR 1978 is a common star. It lies about 192 light-years from Earth, sits in the constellation Ori, shines at apparent magnitude 6.09 and has spectral type F0III:n.

Its spectrum reads F0III:n — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HR 1978 in the constellation Ori. At apparent magnitude 6.09, it is an easy target for binoculars.

Like any astronomical target, HR 1978 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 1978 is a common star

HR 1978 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, In Orion's hunting ground, Yellow-white F-type star and Giant 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.