About HIP 47815
HIP 47815 is a trash star. It sits in the constellation Cha and shines at apparent magnitude 10.36.
Its colour puts the surface at roughly 4210 K, against the Sun's 5778 K.
Trash star 3 EP
HIP 47815
RA 146.2084° · Dec -80.5130° · star
Score breakdown
· 1 badgeTrash 15 pts → Common
- Star +3
Total score 3
12 more points to reach Common.
Badges
- Star · +3
Trivia
Hard to believe
- True brightness. It pours out about 613.8 thousand times as much light as the Sun. It only looks ordinary because it is so far away.
Find it in the sky
- How to spot it. At magnitude 10.4 you'll want a small backyard telescope, over in Chamaeleon.
- 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 February — 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
- -9.64
- bv
- 1.251
- constellation
- Cha
- luminosity
- 625172.6928
- mag
- 10.36
- name
- HIP 47815
Nearby objects
How to see it
Look for HIP 47815 in the constellation Cha. At apparent magnitude 10.36, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 47815 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 47815 is a trash star
HIP 47815 scores 3 points on Spacedle's rarity scale, which places it in the trash tier. Another 12 points would lift it into a rarer tier.
That score comes from 1 science badge — 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.