About HD 116209
HD 116209 is a trash star. It sits in the constellation Vir, shines at apparent magnitude 7.79 and has spectral type F8.
Its spectrum reads F8 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Trash star 9 EP
HD 116209
RA 200.5477° · Dec -4.6627° · star
Score breakdown
· 3 badgesTrash 15 pts → Common
- Star +3
- On the zodiac +3
- Yellow-white F-type star +3
Total score 9
6 more points to reach Common.
Badges
- Star · +3
- On the zodiac · +3
- Yellow-white F-type star · +3
Trivia
What it actually is
- Spectral class. Its spectrum reads F8 — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Find it in the sky
- How to spot it. At magnitude 7.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Virgo.
- 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 April — that's when to go looking.
Its true colour
- Its true colour. Measured through blue and visual filters it comes out yellow (B−V 0.7) — almost exactly the Sun's own shade — a stellar twin in colour, if not in size.
- 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.
By the numbers
- Surface temperature. Its colour puts the surface at roughly 5600 K, against the Sun's 5778 K.
What's in a name
- Its catalogue. The HD number is from the Henry Draper Catalogue, in which Annie Jump Cannon personally classified the spectra of nearly 400,000 stars — still the largest such feat by one person.
Properties
- absmag
- -12.21
- bv
- 0.7
- constellation
- Vir
- luminosity
- 6668067.6921
- mag
- 7.79
- name
- HD 116209
- spect
- F8
How to see it
Look for HD 116209 in the constellation Vir. At apparent magnitude 7.79, it is an easy target for binoculars.
Like any astronomical target, HD 116209 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 116209 is a trash star
HD 116209 scores 9 points on Spacedle's rarity scale, which places it in the trash tier. Another 6 points would lift it into a rarer tier.
That score comes from 3 science badges — Star, On the zodiac and Yellow-white F-type 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.