What it’s like to stand here
K2-199 b
weight
2.31 g
sun
17.8× wider
sky
amber-orange

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

Sub-Neptune

K2-199 b

Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.

K2-199
host star
1.73 R⊕
radius
6.90 M⊕
mass · measured
3.2 days
orbital period
640°C (1184°F)
avg temp
What it's like to stand here
2.31 g
your weight (measured mass)
3.2 days
one year, in Earth time
17.8× wider
how big its sun looks vs ours
amber-orange
midday sky tint
0.4×
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 · 351 ly away
Jet airliner
421 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
546,918 years
dies en route1000-yr cryo: fails
Light speed
351 years
dies en route1000-yr cryo: survives
Warp 10
128 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthK2-199 b is 1.7× the width of Earth
Explore from here · roam the neighborhood
Host star
K2-199
4491 K host star · 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 12.4
ConstellationVirgo
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 K2-199 b's confirmed parameters, not a photograph.