← Back to dex
Uncommon variable star 25 EP

HR 6290

RA 253.8166° · Dec 13.6199° · star

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Bright giant +12
  • Variable star +5
  • Yellow-white F-type star +3
  • A named variable star +3
  • Barely variable (under 0.05 mag) +2
Total score 25

9 more points to reach Rare.

Badges

  • Variable star · +5
  • Yellow-white F-type star · +3
  • Bright giant · +12
  • Barely variable (under 0.05 mag) · +2
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F5II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a bright giant, well on its way to the largest stars there are.
  • 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 6.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Hercules.
  • 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 June — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag
1.901
bv
0.339
constellation
Her
dist ly
253.0302
luminosity
15.1217
mag
6.35
name
HR 6290
spect
F5II
var amplitude
0.02
var designation
V644
var max
6.341
var min
6.361

About HR 6290

HR 6290 is an uncommon variable star. It lies about 253 light-years from Earth, sits in the constellation Her, shines at apparent magnitude 6.35 and has spectral type F5II.

Its spectrum reads F5II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HR 6290 in the constellation Her. At apparent magnitude 6.35, it is an easy target for binoculars.

Like any astronomical target, HR 6290 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 6290 is an uncommon variable star

HR 6290 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 5 science badges — Variable star, Yellow-white F-type star, Bright giant, Barely variable (under 0.05 mag) 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.