About HIP 91633
HIP 91633 is a trash star. It sits in the constellation Pav, shines at apparent magnitude 9 and has spectral type G6.
Its spectrum reads G6 — a G-type star: the very same spectral class as our own Sun.
Trash star 11 EP
HIP 91633
RA 280.3152° · Dec -60.3082° · star
Score breakdown
· 2 badgesTrash 15 pts → Common
- Sun-like G-type star +8
- Star +3
Total score 11
4 more points to reach Common.
Badges
- Star · +3
- Sun-like G-type star · +8
Trivia
Hard to believe
- True brightness. It pours out about 2.1 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 G6 — a G-type star: the very same spectral class as our own Sun.
Find it in the sky
- How to spot it. At magnitude 9 you'll want a small backyard telescope, over in Pavo.
- Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
- 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 1.3) — 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 4210 K, against the Sun's 5778 K.
What's in a name
- Its catalogue. The HIP number comes from Hipparcos, the ESA satellite that between 1989 and 1993 pinned down 118,000 stars precisely enough to triangulate their distances.
Properties
- absmag
- -11
- bv
- 1.252
- constellation
- Pav
- luminosity
- 2187761.6239
- mag
- 9
- name
- HIP 91633
- spect
- G6
How to see it
Look for HIP 91633 in the constellation Pav. At apparent magnitude 9, it is an easy target for binoculars.
Like any astronomical target, HIP 91633 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 91633 is a trash star
HIP 91633 scores 11 points on Spacedle's rarity scale, which places it in the trash tier. Another 4 points would lift it into a rarer tier.
That score comes from 2 science badges — Star and Sun-like G-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.