What it’s like to stand here
4 UMa b
- weight
- ≥ 15.82 g
- sun
- 20.6× wider
- sky
- amber-orange
Illustration computed from this world’s measured and derived values, not a photograph.
Gas giant
4 UMa b
Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.
4 UMa →
host star
12.60 R⊕
radius
2,511 M⊕
mass · minimum (m·sin i)
270 days
orbital period
694°C (1282°F)
avg temp
What it's like to stand here
≥ 15.82 g
surface gravity (no solid surface · minimum mass only)
270 days
one year, in Earth time
20.6× wider
how big its sun looks vs ours
amber-orange
midday sky tint
0.1×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
How long to get there · 240 ly away
Jet airliner
287 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
373,675 years
dies en route1000-yr cryo: fails
Light speed
240 years
dies en route1000-yr cryo: survives
Warp 10
87 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Host star
4 UMa
K1 III · 1 planet
Sibling worlds in this system
No other confirmed planets here yet. New ones auto-appear as telescopes report.
Nearby star systems
Similar worlds (size · gravity · star)
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Can you see it tonight? · observe
VISIBLE TO THE NAKED EYE
Gear bridge
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
Illustration generated from 4 UMa b's confirmed parameters, not a photograph.