About HIP 21574
HIP 21574 is a trash star. It lies about 640.8 light-years from Earth, sits in the constellation Per and shines at apparent magnitude 10.52.
Its colour puts the surface at roughly 3850 K, against the Sun's 5778 K.
Trash star 11 EP
HIP 21574
RA 69.4938° · Dec 43.5951° · star
Score breakdown
· 2 badgesTrash 15 pts → Common
- Deep red star +8
- Star +3
Total score 11
4 more points to reach Common.
Badges
- Star · +3
- Deep red star · +8
Trivia
Sense of scale
- In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.
Find it in the sky
- How to spot it. At magnitude 10.5 you'll want a small backyard telescope, over in Perseus.
- 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 November — that's when to go looking.
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 11.3 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 1 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 6408 years in a starship at a tenth of light speed.
Properties
- absmag
- 4.054
- bv
- 1.466
- constellation
- Per
- dist ly
- 640.7781
- luminosity
- 2.0816
- mag
- 10.52
- name
- HIP 21574
How to see it
Look for HIP 21574 in the constellation Per. At apparent magnitude 10.52, a small backyard telescope will bring it into view.
Like any astronomical target, HIP 21574 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 21574 is a trash star
HIP 21574 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 Deep red 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.