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Common variable star 15 EP

HD 101696

RA 175.4915° · Dec -24.3858° · star

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Score breakdown

· 4 badges
15 pts · Common
Common 22 pts → Uncommon
  • Variable star +5
  • Gently variable +4
  • Yellow-white F-type star +3
  • A named variable star +3
Total score 15

7 more points to reach Uncommon.

Badges

  • Variable star · +5
  • Yellow-white F-type star · +3
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads Fm delta Del — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • 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 6.9 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Crater.
  • 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 March — 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. ≈ 5.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
1.829
bv
0.37
constellation
Crt
dist ly
336.9381
luminosity
16.1585
mag
6.9
name
HD 101696
spect
Fm delta Del
var amplitude
0.12
var designation
VY
var max
6.835
var min
6.955

About HD 101696

HD 101696 is a common variable star. It lies about 336.9 light-years from Earth, sits in the constellation Crt, shines at apparent magnitude 6.9 and has spectral type Fm delta Del.

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

How to see it

Look for HD 101696 in the constellation Crt. At apparent magnitude 6.9, it is an easy target for binoculars.

Like any astronomical target, HD 101696 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 101696 is a common variable star

HD 101696 scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.

That score comes from 4 science badges — Variable star, Yellow-white F-type star, Gently variable 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.