What it’s like to stand here
PH1 b
weight
4.42 g
sun
2.7× wider
sky
bright white

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

Ice / gas giant

PH1 b

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

PH1
host star
6.18 R⊕
radius
169 M⊕
mass · measured
138 days
orbital period
208°C (406°F)
avg temp
What it's like to stand here
4.42 g
surface gravity (no solid surface · measured mass)
138 days
one year, in Earth time
2.7× wider
how big its sun looks vs ours
bright white
midday sky tint
0.2×
how high you could jump vs Earth
normal
day/night cycle (not tidally locked)
How long to get there · 3,370 ly away
Jet airliner
4.0 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
5.3 million years
dies en route1000-yr cryo: fails
Light speed
3,370 years
dies en route1000-yr cryo: fails
Warp 10
3 years
arrives, just older
Folding spacetime
instant
arrives thriving
Size vs Earth
EarthPH1 b is 6.2× the width of Earth
Explore from here · roam the neighborhood
Host star
Quadruple system
PH1
F · 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
MID-SIZE TELESCOPE NEEDED
Host-star brightnessmag 13.8
ConstellationCygnus
To see the host star8-10" (200-250 mm) telescope
Gear bridge

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

Illustration generated from PH1 b's confirmed parameters, not a photograph.