About HIP 86221 b
HIP 86221 b is a trash exoplanet. It lies about 96.2 light-years from Earth, spans roughly 14 Earth radii, weighs about 225.66 Earth masses and completes an orbit every 2.22 days.
About 14× the width of Earth.
Trash exoplanet 9 EP
HIP 86221 b
RA 264.2949° · Dec 27.8964° · exoplanet
Score breakdown
· 2 badgesTrash 15 pts → Common
- Confirmed exoplanet +5
- Gas giant +4
Total score 9
6 more points to reach Common.
Badges
- Confirmed exoplanet · +5
- Gas giant · +4
Trivia
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 1.7 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 150.2 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 962 years in a starship at a tenth of light speed.
- Distance. 96.2 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1930.
Saying hello
- Say hello. A radio message and its reply would take 192 years round-trip.
Standing on it
- A year here. A full year lasts just 2.2 Earth days.
By the numbers
- Size. About 14× the width of Earth.
- Volume. About 2744 Earths could fit inside it.
- Mass. Roughly 226× Earth's mass — about 0.7 Jupiters.
- Your weight. You'd weigh about 1.2× your Earth weight standing here.
- Density. Less dense than water — drop it in a big enough ocean and it would float.
How we found it
- Discovery. Found by Cerro Tololo Inter-American Observatory using the radial velocity method.
Properties
- density gcc
- 0.452
- discovery facility
- Cerro Tololo Inter-American Observatory
- discovery method
- Radial Velocity
- dist ly
- 96.1828
- eccentricity
- 0.086
- mass earth
- 225.6582
- name
- HIP 86221 b
- orbital period days
- 2.224
- radius earth
- 14
- sys num planets
- 1
How to see it
Like any astronomical target, HIP 86221 b 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 86221 b is a trash exoplanet
HIP 86221 b 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 2 science badges — Confirmed exoplanet and Gas giant — 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.