What it’s like to stand here
Kepler-1821 b
- weight
- ≈ 1.08 g
- sun
- 7.1× wider
- sky
- warm white
Illustration computed from this world’s measured and derived values, not a photograph.
Sub-Neptune
Kepler-1821 b
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
Kepler-1821 →
host star
2.59 R⊕
radius
7.24 M⊕
mass · estimated from radius
16 days
orbital period
371°C (700°F)
avg temp
What it's like to stand here
≈ 1.08 g
your weight (mass estimated from size)
16 days
one year, in Earth time
7.1× wider
how big its sun looks vs ours
warm white
midday sky tint
0.9×
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 · 2,608 ly away
Jet airliner
3.1 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
4.1 million years
dies en route1000-yr cryo: fails
Light speed
2,608 years
dies en route1000-yr cryo: fails
Warp 10
3 years
arrives, just older
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Kepler-1821 bSub-Neptune
PlanetKepler-1991 csimilar world
SystemKepler-87961 ly
Sky regionCygnusthis direction
Host star
Kepler-1821
5475 K host star · 1 planet
Sibling worlds in this system
No other confirmed planets here yet. New ones auto-appear as telescopes report.
Nearby star systems
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Can you see it tonight? · observe
FAINT — LARGE TELESCOPE NEEDED
Host-star brightnessmag 14.8
ConstellationCygnus →
To see the host star10"+ (250 mm) telescope, dark sky
Gear bridge
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
Illustration generated from Kepler-1821 b's confirmed parameters, not a photograph.