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SWARM A

In orbit NORAD 39452 ETCH-3750-6128-6502-6329

Observations 0
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Mission information
Spacecraft name
SWARM A
Status
Active
The satellite is in orbit
The network has not received data from this satellite for a long time
Launch and timeline
Launch time
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
407.93 km
Apogee
412.10 km
Inclination
87.3°
Period
92.8 min
Semi-major axis
6788.2 km
Velocity
7.64 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-10 04:46:17 UTC
Two-line elements (TLE)
1 39452U 13067B   26282.95438208  .00010736  00000-0  18302-3 0  9993
2 39452  87.3380  13.6136 0003068  99.5942 260.5665 15.51196043724030
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Orbit history, past year

Mean elements of every TLE set over the past 365 days, plotted against the epoch of the set. Each source is its own line; click it in the legend to hide it. A jump in altitude is a manoeuvre or a bad set; lines drifting apart are a disagreement between sources. “TLE age” is how many hours have passed since the epoch of the source's freshest set, plotted against when the set reached us, on a logarithmic scale. A set the source repeats unchanged does not reset the age.

Prediction divergence

Each TLE set is propagated with SGP4 to the epoch of the next set from the same source and compared with it, plotted against the epoch of the next set; the tooltip shows how many hours ahead the prediction ran. The logarithmic scale shows the size of the divergence and the tooltip its sign: plus along-track means the prediction is ahead of the satellite. This is how well the sets agree, not the true error: the reference is a TLE too, off by about a kilometre. An outlier is a manoeuvre between sets. Sets more than a week apart are not compared.

Time of closest approach, UTC Object 1 Object 2 Distance, km Speed, km/s Max. probability
2026-10-10 19:28:17 SWARM A
NORAD 39452 		UWE-4
NORAD 43880 		3.021 14.96 1.9e-07
2026-10-12 16:33:13 SWARM A
NORAD 39452 		STARLINK-38170
NORAD 100636 		4.615 14.88 2.5e-06
2026-10-12 18:06:04 SWARM A
NORAD 39452 		STARLINK-38170
NORAD 100636 		0.227 14.87 1.0e-03
2026-10-12 19:38:55 SWARM A
NORAD 39452 		STARLINK-38170
NORAD 100636 		4.074 14.87 3.3e-06
2026-10-13 08:00:51 SWARM A
NORAD 39452 		GHGSAT-C7
NORAD 56209 		4.279 15.31 8.1e-08
2026-10-13 08:47:19 SWARM A
NORAD 39452 		GHGSAT-C7
NORAD 56209 		1.473 15.28 6.9e-07
2026-10-13 21:24:52 SWARM A
NORAD 39452 		LEO EXPRESS 1
NORAD 58301 		4.539 1.41 2.1e-07
2026-10-14 01:34:25 SWARM A
NORAD 39452 		SL-3 R/B
NORAD 10114 		1.813 11.52 2.6e-06
2026-10-16 03:06:20 SWARM A
NORAD 39452 		CHIPSAT
NORAD 27643 		4.480 5.19 2.1e-07

Data: CelesTrak SOCRATES Plus, computed from TLEs of the public catalog. This is an estimate, not grounds for a manoeuvre: TLEs carry no covariance, and the maximum probability assumes a position error.

All conjunctions of this satellite