Why 7.59 km/s
Circular orbit speed is v = √(μ / r). With Earth's μ = 398,600 km³/s² and r = 6,371 + 550 = 6,921 km, v comes out at 7.59 km/s.
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Orbit tracker · live
Where the satellite is right now
A live model of $SIS in a 550 km low Earth orbit at 53 degrees inclination, a common shell for broadband satellite constellations. Position, day and night, ground track and every counter run on real orbital mechanics, measured from the moment the takeover began.
- Altitude
- 550 km
- Velocity
- 7.59 km/s
- Period
- 95.5 min
- Inclination
- 53°
Live model
Ground track, footprint and daylight
The dashed ring is everything the satellite can see from 550 km. Gold dots are city lights on the night side. Switch to 60× or 600× to watch whole orbits play out.
- LatitudeSIM
- 32.31° S
- LongitudeSIM
- 87.51° W
- Altitude
- 550 km
- Velocity
- 27,320 km/h
- Orbital period
- 95.5 min
- Orbits since takeover
- 3
- Distance since takeover
- 168,869 km
- Mission clock
- T+06:10:51
South of the equator
West of Greenwich
Low Earth orbit
7.59 km/s, Mach 22 at sea level
15.08 orbits and sunrises a day
Counted from Nov 1, 2026 19:00 UTC
4.21 trips around the equator
Time since the uplink was restored
Orbital mechanics
The math behind the tracker
Four formulas run this page. Plug in Earth's gravity and a 550 km altitude and everything else falls out.
Why 95.5 minutes
One lap is the circumference divided by speed: T = 2πr / v = 5,730 seconds, or 95.5 minutes.
Why 15 sunrises a day
A day has 86,400 seconds. Divide by a 5,730 second orbit and the satellite circles Earth 15.08 times, with a sunrise on every lap.
How far it can see
From 550 km the horizon sits 2,557 km away along the ground, found with R × acos(R / (R + h)). That is the dashed footprint on the globe.
Join the takeover
Fifteen sunrises a day, all on-chain
The satellite never stops moving and neither does the crew. Follow every orbit in the Telegram.
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