What it’s like to stand here
tau Boo b
weight
11.54 g
sun
28.9× wider
sky
bright white

Illustration computed from this world’s measured and derived values, not a photograph.

Gas giant

tau Boo b

Radial Velocity: spotted by the gravitational wobble the planet tugs in its star.

tau Boo
host star
12.80 R⊕
radius
1,891 M⊕
mass · measured
3.3 days
orbital period
1409°C (2568°F)
avg temp
What it's like to stand here
11.54 g
surface gravity (no solid surface · measured mass)
3.3 days
one year, in Earth time
28.9× wider
how big its sun looks vs ours
bright white
midday sky tint
0.1×
how high you could jump vs Earth
likely
likely tidally locked: probably eternal day on one side, night on the other
How long to get there · 51.1 ly away
Jet airliner
61.2 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
79,618 years
dies en route1000-yr cryo: fails
Light speed
51 years
arrives elderly
Warp 10
19 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Earthtau Boo b is 13× the width of Earth
Explore from here · roam the neighborhood
Host star
Binary system
tau Boo
F7 V · 1 planet
Explore →
Sibling worlds in this system

No other confirmed planets here yet. New ones auto-appear as telescopes report.

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
Host-star brightnessmag 4.5
ConstellationBoötes
To see the host starno equipment needed
Gear bridge

Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.

Illustration generated from tau Boo b's confirmed parameters, not a photograph.