About HIP 8312
HIP 8312 is a common variable star. It sits in the constellation Cas, shines at apparent magnitude 10.43 and has spectral type F6.
Its spectrum reads F6 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Common variable star 19 EP
HIP 8312
RA 26.7997° · Dec 61.4225° · star
Score breakdown
· 5 badgesCommon 22 pts → Uncommon
- Variable star +5
- Never sets (northern circumpolar) +4
- Gently variable +4
- Yellow-white F-type star +3
- A named variable star +3
Total score 19
3 more points to reach Uncommon.
Badges
- Variable star · +5
- Never sets (northern circumpolar) · +4
- Yellow-white F-type star · +3
- Gently variable · +4
- A named variable star · +3
Trivia
Hard to believe
- True brightness. It pours out about 575.4 thousand times as much light as the Sun. It only looks ordinary because it is so far away.
What it actually is
- Spectral class. Its spectrum reads F6 — 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.
Find it in the sky
- How to spot it. At magnitude 10.4 you'll want a small backyard telescope, over in Cassiopeia.
- Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
- Best time of year. It stands highest in the middle of the night around October — that's when to go looking.
Its true colour
- Its true colour. Measured through blue and visual filters it comes out orange (B−V 1.1) — cooler than the Sun, and the kind of star that burns steadily for tens of billions of years.
By the numbers
- Surface temperature. Its colour puts the surface at roughly 4580 K, against the Sun's 5778 K.
Properties
- absmag
- -9.57
- bv
- 1.071
- constellation
- Cas
- luminosity
- 586138.1645
- mag
- 10.43
- name
- HIP 8312
- spect
- F6
- var amplitude
- 0.44
- var designation
- BY
- var max
- 10.168
- var min
- 10.608
How to see it
Look for HIP 8312 in the constellation Cas. At apparent magnitude 10.43, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 8312 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 HIP 8312 is a common variable star
HIP 8312 scores 19 points on Spacedle's rarity scale, which places it in the common tier. Another 3 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Never sets (northern circumpolar), 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.