About HIP 35173 b
HIP 35173 b is a trash exoplanet. It lies about 108.1 light-years from Earth, has an equilibrium temperature near 444 K, spans roughly 3.61 Earth radii and weighs about 12.7 Earth masses.
About 3.6× the width of Earth.
Trash exoplanet 10 EP
HIP 35173 b
RA 109.0449° · Dec -3.6661° · exoplanet
Score breakdown
· 2 badgesTrash 15 pts → Common
- Confirmed exoplanet +5
- Sub-Neptune +5
Total score 10
5 more points to reach Common.
Badges
- Confirmed exoplanet · +5
- Sub-Neptune · +5
Trivia
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 1.9 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 168.9 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 1081 years in a starship at a tenth of light speed.
- Distance. 108 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1918.
Saying hello
- Say hello. A radio message and its reply would take 216 years round-trip.
Standing on it
- A year here. A full year lasts just 41.5 Earth days.
By the numbers
- Size. About 3.6× the width of Earth.
- Volume. About 47 Earths could fit inside it.
- Mass. About 12.7× the mass of Earth.
- Your weight. You'd weigh about 1.0× your Earth weight standing here.
- Temperature. A scorching 171°C on average.
How we found it
- Discovery. Found by Las Campanas Observatory using the radial velocity method.
Properties
- density gcc
- 1.48
- discovery facility
- Las Campanas Observatory
- discovery method
- Radial Velocity
- dist ly
- 108.1409
- eccentricity
- 0.16
- eq temp k
- 444.34
- insolation
- 6.4967
- mass earth
- 12.7
- name
- HIP 35173 b
- orbital period days
- 41.516
- radius earth
- 3.61
- sys num planets
- 1
How to see it
Like any astronomical target, HIP 35173 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 35173 b is a trash exoplanet
HIP 35173 b scores 10 points on Spacedle's rarity scale, which places it in the trash tier. Another 5 points would lift it into a rarer tier.
That score comes from 2 science badges — Confirmed exoplanet and Sub-Neptune — 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.