Without a telescope
BarelyOnly on its best passes and from a dark site: magnitude +4.7 at its best, at the limit of the naked eye. Binoculars make it easy.
Satellites›Brightest satellites›SL-4 rocket body
SL-4 rocket body
SL-4 rocket body is a spent rocket stage from Russia (and the former Soviet Union), launched on April 16, 2014 from Baikonur, Kazakhstan. It is in a low orbit, 374 to 487 km above the ground, and goes around the Earth every 93.2 minutes: 15.4 times a day, at 7.65 km/s (27,500 km/h).
Where SL-4 rocket body 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 SL-4 rocket body…
SL-4 rocket body
Finding SL-4 rocket body…
- Over
- …
- Position
- …
- Height
- …
- Speed
- …
- Now
- …
- Your time
- …
Can you see it?
From where
It passes straight overhead only between latitudes 52° north and 52° south, and rises above the horizon as far as about 72°. Nearer the poles than that it is never in the sky.
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)
- 39679
- International designator
- 2014-021B
- Name in the catalogue
- SL-4 R/B
- Type
- Spent rocket stage
- Belongs to
- Russia (and the former Soviet Union)
- Launched
- April 16, 2014
- Launched from
- Baikonur, Kazakhstan
- Orbit
- Low Earth orbit
- Lowest point
- 374 km
- Highest point
- 487 km
- Tilt to the equator
- 51.6°
- One lap
- 93.2 minutes
- Laps a day
- 15.45
- Speed
- 7.65 km/s
- At its brightest
- mag +4.7 estimated, overhead
- Standard brightness
- mag +6.8 from 1,000 km, half lit
- Size on radar
- 10 m²
Orbit measured November 12, 2026, from CelesTrak. Heights are above the ground at the equator. Page updated November 14, 2026.
Quick answers
Where is SL-4 rocket body right now?
The map on this page shows where SL-4 rocket body 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 SL-4 rocket body?
Between 374 km at its lowest and 487 km at its highest, above the ground.
How fast does SL-4 rocket body go?
About 7.65 km/s, which is 27,500 km/h. One lap of the Earth takes it 93.2 minutes, so it goes around 15.4 times a day.
Can you see SL-4 rocket body without a telescope?
Barely. Only on its best passes and from a dark site: magnitude +4.7 at its best, at the limit of the naked eye. Binoculars make it easy.
When was SL-4 rocket body launched?
On April 16, 2014, from Baikonur, Kazakhstan.
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.
- Starlink trains, Tiangong, Hubble and the brightest satellites of tonight.