Without a telescope
Not with the naked eyeIt needs binoculars or a telescope: magnitude +12.6 at its best, and the faintest stars the eye can see are about magnitude +6.
Satellites›Amateur radio satellites›CUBESAT XI-IV (CO-57)
CUBESAT XI-IV (CO-57)
CUBESAT XI-IV (CO-57) is an amateur radio satellite from Japan, launched on June 30, 2003 from Plesetsk, Russia. It is in a low orbit, 805 to 820 km above the ground, and goes around the Earth every 101.1 minutes: 14.2 times a day, at 7.45 km/s (26,800 km/h). The orbit is sun-synchronous: it crosses every place at about the same local time of day.
Where CUBESAT XI-IV (CO-57) is right now
The gold ring is its orbit, and the line drops to the point on the ground under it. Inside the white circle it is above the horizon. Drag the globe to turn it, pinch or use the buttons to come closer; the target button brings you back to the satellite. The 2D map shows its path over the ground for the next lap: gold where it is in sunlight, dashed where it is in Earth’s shadow.
Finding CUBESAT XI-IV (CO-57)…
CUBESAT XI-IV (CO-57)
Finding CUBESAT XI-IV (CO-57)…
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Can you see it?
From where
Its orbit crosses close to both poles, so sooner or later it passes over every place on Earth.
A satellite shows only when your sky is dark and it is still in sunlight: in the hours after dusk and before dawn.
When it passes over you
The app works out its passes over your exact location, alerts you before one, and leads you to it with an arrow in the camera view.
The facts
- Catalogue number (NORAD)
- 27848
- International designator
- 2003-031J
- Type
- Satellite
- Belongs to
- Japan
- Launched
- June 30, 2003
- Launched from
- Plesetsk, Russia
- Status
- Operational
- Orbit
- Low Earth orbit, sun-synchronous
- Lowest point
- 805 km
- Highest point
- 820 km
- Tilt to the equator
- 98.7°
- One lap
- 101.1 minutes
- Laps a day
- 14.24
- Speed
- 7.45 km/s
- At its brightest
- mag +12.6 estimated, overhead
- Standard brightness
- mag +13.1 from 1,000 km, half lit
- Size on radar
- 0.0 m²
Orbit measured November 13, 2026, from CelesTrak. Heights are above the ground at the equator. Page updated November 14, 2026.
Quick answers
Where is CUBESAT XI-IV (CO-57) right now?
The map on this page shows where CUBESAT XI-IV (CO-57) is at this moment, the path it will follow over the ground for the next lap, and the part of the Earth it is above the horizon for. It is worked out from the latest tracking data.
How high is CUBESAT XI-IV (CO-57)?
Between 805 km at its lowest and 820 km at its highest, above the ground.
How fast does CUBESAT XI-IV (CO-57) go?
About 7.45 km/s, which is 26,800 km/h. One lap of the Earth takes it 101.1 minutes, so it goes around 14.2 times a day.
Can you see CUBESAT XI-IV (CO-57) without a telescope?
Not with the naked eye. It needs binoculars or a telescope: magnitude +12.6 at its best, and the faintest stars the eye can see are about magnitude +6.
When was CUBESAT XI-IV (CO-57) launched?
On June 30, 2003, from Plesetsk, Russia.
With the app
Knowing where it is over the Earth is one thing. The app shows you where it is in your sky.
This page follows the satellite around the planet. The app works out when it passes over you, and leads you to it.
- Every pass over your exact location, for this satellite and 10,000+ more.
- An alert before it rises, so you are outside in time.
- An arrow in the camera view that leads you to the exact spot in the sky.
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