About HIP 93399
HIP 93399 is an uncommon variable star. It sits in the constellation Aql, shines at apparent magnitude 9.96 and has spectral type F8.
Its spectrum reads F8 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Uncommon variable star 29 EP
HIP 93399
RA 285.3322° · Dec 0.1470° · star
Score breakdown
· 5 badgesUncommon 34 pts → Rare
- Strongly variable +10
- Deep red star +8
- Variable star +5
- Yellow-white F-type star +3
- A named variable star +3
Total score 29
5 more points to reach Rare.
Badges
- Variable star · +5
- Yellow-white F-type star · +3
- Deep red star · +8
- Strongly variable · +10
- A named variable star · +3
Trivia
Hard to believe
- True brightness. It pours out about 887.2 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 F8 — 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 you'll want a small backyard telescope, over in Aquila.
- 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 July — that's when to go looking.
Its true colour
- Its true colour. Measured through blue and visual filters it comes out deep orange-red (B−V 1.5) — one of the coolest surfaces a star can have while still fusing.
By the numbers
- Surface temperature. Its colour puts the surface at roughly 3860 K, against the Sun's 5778 K.
Properties
- absmag
- -10.04
- bv
- 1.459
- constellation
- Aql
- luminosity
- 903649.4737
- mag
- 9.96
- name
- HIP 93399
- spect
- F8
- var amplitude
- 0.72
- var designation
- V336
- var max
- 9.498
- var min
- 10.218
Nearby objects
How to see it
Look for HIP 93399 in the constellation Aql. At apparent magnitude 9.96, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 93399 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 93399 is an uncommon variable star
HIP 93399 scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.
That score comes from 5 science badges — Variable star, Yellow-white F-type star, Deep red star, Strongly 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.