About HIP 105854 b
HIP 105854 b is a trash exoplanet. It lies about 256.5 light-years from Earth, has an equilibrium temperature near 822 K, spans roughly 12.6 Earth radii and weighs about 2,606.1 Earth masses.
About 12.6× the width of Earth.
Trash exoplanet 9 EP
HIP 105854 b
RA 321.5962° · Dec -37.8295° · 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. ≈ 4.5 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 400.5 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 2565 years in a starship at a tenth of light speed.
- Distance. 256 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1770.
Saying hello
- Say hello. A radio message and its reply would take 513 years round-trip.
Standing on it
- A year here. A full year lasts just 184 Earth days.
By the numbers
- Size. About 12.6× the width of Earth.
- Volume. About 2000 Earths could fit inside it.
- Mass. Roughly 2606× Earth's mass — about 8.2 Jupiters.
- Your weight. You'd weigh about 16.4× your Earth weight standing here.
- Temperature. Around 549°C — hotter than a self-cleaning oven.
How we found it
- Discovery. Found by Multiple Observatories using the radial velocity method.
Properties
- density gcc
- 7.16
- discovery facility
- Multiple Observatories
- discovery method
- Radial Velocity
- dist ly
- 256.4829
- eccentricity
- 0.02
- eq temp k
- 822.14
- insolation
- 71.2902
- mass earth
- 2606.1
- name
- HIP 105854 b
- orbital period days
- 184.2
- radius earth
- 12.6
- sys num planets
- 1
How to see it
Like any astronomical target, HIP 105854 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 105854 b is a trash exoplanet
HIP 105854 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.