What it’s like to stand here
BD-210397 b
weight
≥ 1.09 g
sun
0.28× as wide
sky
amber-orange

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

Gas giant

BD-210397 b

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

BD-210397
host star
14.00 R⊕
radius
214 M⊕
mass · minimum (m·sin i)
5.2 years
orbital period
-169°C (-272°F)
avg temp
What it's like to stand here
≥ 1.09 g
surface gravity (no solid surface · minimum mass only)
5.2 years
one year, in Earth time
0.28× as wide
how big its sun looks vs ours
amber-orange
midday sky tint
0.9×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
How long to get there · 77.4 ly away
Jet airliner
92.8 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
120,721 years
dies en route1000-yr cryo: fails
Light speed
77 years
dies en route1000-yr cryo: survives
Warp 10
28 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthBD-210397 b is 14× the width of Earth
Explore from here · roam the neighborhood
Host star
BD-210397
K7 V · 2 planets
Explore →
Sibling worlds in this system

Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.

Can you see it tonight? · observe
SMALL TELESCOPE NEEDED
Host-star brightnessmag 9.8
ConstellationCetus
To see the host star4-6" (100-150 mm) telescope
Gear bridge

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

Illustration generated from BD-210397 b's confirmed parameters, not a photograph.