About HIP 102519
HIP 102519 is a common star. It sits in the constellation Cyg, shines at apparent magnitude 9.51 and has spectral type F4II.
Its spectrum reads F4II — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Common star 18 EP
HIP 102519
RA 311.6395° · Dec 39.9301° · star
Score breakdown
· 3 badgesCommon 22 pts → Uncommon
- Bright giant +12
- Star +3
- Yellow-white F-type star +3
Total score 18
4 more points to reach Uncommon.
Badges
- Star · +3
- Yellow-white F-type star · +3
- Bright giant · +12
Trivia
Hard to believe
- True brightness. It pours out about 1.3 million 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 F4II — 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.
Find it in the sky
- How to spot it. At magnitude 9.5 you'll want a small backyard telescope, over in Cygnus.
- 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.
Its true colour
- Its true colour. Measured through blue and visual filters it comes out orange (B−V 1.2) — 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 4400 K, against the Sun's 5778 K.
Properties
- absmag
- -10.49
- bv
- 1.155
- constellation
- Cyg
- luminosity
- 1367728.8256
- mag
- 9.51
- name
- HIP 102519
- spect
- F4II
How to see it
Look for HIP 102519 in the constellation Cyg. At apparent magnitude 9.51, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 102519 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 102519 is a common star
HIP 102519 scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.
That score comes from 3 science badges — Star, Yellow-white F-type star and Bright giant — 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.