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Anomaly variable star 79 EP

HR 7988

RA 312.8677° · Dec 28.2505° · star

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Score breakdown

· 9 badges
79 pts · Anomaly
Anomaly 120 pts → Mythic
  • Supergiant +18
  • Fades out of naked-eye view +16
  • Intrinsically luminous (Mv < −2) +10
  • Strongly variable +10
  • Naked-eye visible +8
  • Distant (over 1,000 light-years) +6
  • Variable star +5
  • Yellow-white F-type star +3
  • A named variable star +3
Total score 79

41 more points to reach Mythic.

Badges

  • Variable star · +5
  • Distant (over 1,000 light-years) · +6
  • Naked-eye visible · +8
  • Yellow-white F-type star · +3
  • Supergiant · +18
  • Intrinsically luminous (Mv < −2) · +10
  • Strongly variable · +10
  • Fades out of naked-eye view · +16
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads F5Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is a supergiant, hundreds of times wider 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 5.7 you can see it with your own eyes from a dark site, over in Vulpecula.
  • 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 August — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Properties

absmag
-2.175
bv
0.616
constellation
Vul
dist ly
1203.5277
luminosity
645.6542
mag
5.66
name
HR 7988
spect
F5Ib
var amplitude
0.69
var designation
T
var max
5.379
var min
6.069

About HR 7988

HR 7988 is an anomaly variable star. It lies about 1,203.5 light-years from Earth, sits in the constellation Vul, shines at apparent magnitude 5.66 and has spectral type F5Ib.

Its spectrum reads F5Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HR 7988 in the constellation Vul. At apparent magnitude 5.66, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 7988 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 7988 is an anomaly variable star

HR 7988 scores 79 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 41 points would lift it into a rarer tier.

That score comes from 9 science badges — Variable star, Distant (over 1,000 light-years), Naked-eye visible, Yellow-white F-type star, Supergiant, Intrinsically luminous (Mv < −2), Strongly variable and Fades out of naked-eye view — 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.