About HD 332843
HD 332843 is an uncommon star. It sits in the constellation Cyg, shines at apparent magnitude 9.65 and has spectral type F0Iab:.
Its spectrum reads F0Iab: — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Uncommon star 24 EP
HD 332843
RA 298.0566° · Dec 29.4077° · star
Score breakdown
· 3 badgesUncommon 34 pts → Rare
- Supergiant +18
- Star +3
- Yellow-white F-type star +3
Total score 24
10 more points to reach Rare.
Badges
- Star · +3
- Yellow-white F-type star · +3
- Supergiant · +18
Trivia
Hard to believe
- True brightness. It pours out about 1.2 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 F0Iab: — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
- Where it is in life. It is a supergiant. Drop it where the Sun is and its surface would engulf the inner planets.
Find it in the sky
- How to spot it. At magnitude 9.7 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 July — that's when to go looking.
Its true colour
- Its true colour. Measured through blue and visual filters it comes out orange (B−V 0.9) — cooler than the Sun, and the kind of star that burns steadily for tens of billions of years.
- Why no green stars. No star ever looks green: a surface hot enough to peak in green also floods out plenty of red and blue, and your eye blends the mixture back to white.
Properties
- absmag
- -10.35
- bv
- 0.87
- constellation
- Cyg
- luminosity
- 1202264.4346
- mag
- 9.65
- name
- HD 332843
- spect
- F0Iab:
How to see it
Look for HD 332843 in the constellation Cyg. At apparent magnitude 9.65, a small backyard telescope will bring it into view.
Like any astronomical target, HD 332843 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 332843 is an uncommon star
HD 332843 scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.
That score comes from 3 science badges — Star, Yellow-white F-type star and Supergiant — 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.