About ups And b
ups And b is a rare exoplanet. It lies about 43.7 light-years from Earth, has an equilibrium temperature near 1,524 K, spans roughly 14 Earth radii and weighs about 218.53 Earth masses.
Its surface is likely an ocean of molten rock.
Rare exoplanet 39 EP
ups And b
RA 24.1984° · Dec 41.4038° · exoplanet
Score breakdown
· 5 badgesRare 46 pts → Epic
- Lava world +14
- Hot Jupiter +10
- Multi-planet system +6
- Confirmed exoplanet +5
- Gas giant +4
Total score 39
7 more points to reach Epic.
Badges
- Confirmed exoplanet · +5
- Gas giant · +4
- Hot Jupiter · +10
- Lava world · +14
- Multi-planet system · +6
Trivia
What makes it special
- Lava world. Its surface is likely an ocean of molten rock.
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 768.3 thousand years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 68.3 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 437 years in a starship at a tenth of light speed.
- Distance. 43.7 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1982.
Saying hello
- Say hello. A radio message and its reply would take 87.4 years round-trip.
Standing on it
- A year here. A full year lasts just 4.6 Earth days.
By the numbers
- Size. About 14× the width of Earth.
- Volume. About 2744 Earths could fit inside it.
- Mass. Roughly 219× Earth's mass — about 0.7 Jupiters.
- Your weight. You'd weigh about 1.1× your Earth weight standing here.
- Density. Less dense than water — drop it in a big enough ocean and it would float.
- Temperature. Around 1251°C — hotter than a self-cleaning oven.
How we found it
- Discovery. Found by Lick Observatory using the radial velocity method.
Cosmic context
- Crowded system. One of at least 3 planets orbiting its star.
Properties
- density gcc
- 0.438
- discovery facility
- Lick Observatory
- discovery method
- Radial Velocity
- dist ly
- 43.7225
- eccentricity
- 0.0215
- eq temp k
- 1523.73
- insolation
- 955.9835
- mass earth
- 218.531
- name
- ups And b
- orbital period days
- 4.617
- radius earth
- 14
- sys num planets
- 3
How to see it
Like any astronomical target, ups And 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 ups And b is a rare exoplanet
ups And b scores 39 points on Spacedle's rarity scale, which places it in the rare tier. Another 7 points would lift it into a rarer tier.
That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Lava world and Multi-planet system — 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.