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SWARM B

In orbit NORAD 39451 CKNG-0416-0708-9365-3946

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Mission information
Spacecraft name
SWARM B
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
473.27 km
Apogee
477.04 km
Inclination
87.7°
Period
94.2 min
Semi-major axis
6853.3 km
Velocity
7.61 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-11 12:56:42 UTC
Two-line elements (TLE)
1 39451U 13067A   26284.31341312  .00003289  00000-0  11508-3 0  9999
2 39451  87.7391 307.0384 0002747  82.1275 278.0286 15.29151871700986
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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
2026-10-11 23:05:10 SWARM B
NORAD 39451 		STARLINK-31409
NORAD 59299 		3.025 13.01 8.7e-06
2026-10-11 23:50:25 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		4.366 12.20 4.6e-06
2026-10-12 00:57:26 SWARM B
NORAD 39451 		STARLINK-31881
NORAD 59659 		3.629 7.92 8.8e-06
2026-10-12 01:24:38 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		2.650 12.18 1.3e-05
2026-10-12 01:26:48 SWARM B
NORAD 39451 		STARLINK-36339
NORAD 67340 		2.115 13.12 1.7e-05
2026-10-12 02:17:04 SWARM B
NORAD 39451 		STARLINK-6211
NORAD 57059 		3.975 6.25 7.8e-06
2026-10-12 02:25:46 SWARM B
NORAD 39451 		STARLINK-30340
NORAD 57884 		3.469 13.76 5.8e-06
2026-10-12 02:30:28 SWARM B
NORAD 39451 		STARLINK-36936
NORAD 68012 		2.772 7.25 1.6e-05
2026-10-12 02:58:51 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		4.179 12.16 5.0e-06
2026-10-12 03:18:46 SWARM B
NORAD 39451 		STARLINK-31881
NORAD 59659 		1.771 7.95 3.7e-05
2026-10-12 03:48:08 SWARM B
NORAD 39451 		STARLINK-36339
NORAD 67340 		4.148 13.09 4.6e-06
2026-10-12 04:38:27 SWARM B
NORAD 39451 		STARLINK-6211
NORAD 57059 		2.618 6.23 1.8e-05
2026-10-12 04:51:59 SWARM B
NORAD 39451 		STARLINK-36555
NORAD 67497 		4.822 12.99 3.4e-06
2026-10-12 05:21:08 SWARM B
NORAD 39451 		STARLINK-36570
NORAD 67640 		4.770 7.86 5.1e-06
2026-10-12 05:22:23 SWARM B
NORAD 39451 		STARLINK-30757
NORAD 58131 		0.361 7.19 9.2e-04
2026-10-12 05:29:04 SWARM B
NORAD 39451 		STARLINK-30080
NORAD 56705 		1.856 13.84 2.0e-05
2026-10-12 07:42:28 SWARM B
NORAD 39451 		STARLINK-36570
NORAD 67640 		2.502 7.84 1.9e-05
2026-10-12 07:43:44 SWARM B
NORAD 39451 		STARLINK-30757
NORAD 58131 		3.349 7.17 1.1e-05
2026-10-12 07:53:44 SWARM B
NORAD 39451 		STARLINK-35952
NORAD 66520 		2.219 13.84 1.4e-05
2026-10-12 08:47:32 SWARM B
NORAD 39451 		STARLINK-36555
NORAD 67497 		3.717 13.03 5.7e-06
2026-10-12 09:35:43 SWARM B
NORAD 39451 		STARLINK-36449
NORAD 67308 		1.403 12.59 4.3e-05
2026-10-12 10:02:52 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		4.277 12.07 4.9e-06
2026-10-12 10:42:11 SWARM B
NORAD 39451 		STARLINK-38207
NORAD 100450 		1.921 8.73 3.0e-05
2026-10-12 11:37:05 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		1.849 12.05 2.6e-05
2026-10-12 12:40:09 SWARM B
NORAD 39451 		STARLINK-31070
NORAD 58639 		3.376 6.35 1.1e-05
2026-10-12 12:43:47 SWARM B
NORAD 39451 		STARLINK-33752
NORAD 63580 		0.797 12.77 4.3e-06
2026-10-12 13:11:18 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		0.857 12.03 1.2e-04
2026-10-12 14:44:48 SWARM B
NORAD 39451 		STARLINK-34090
NORAD 63976 		3.702 10.02 7.6e-06
2026-10-12 14:45:31 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		2.859 12.01 1.1e-05
2026-10-12 14:50:57 SWARM B
NORAD 39451 		STARLINK-31213
NORAD 58860 		2.959 13.63 8.2e-06
2026-10-12 15:05:30 SWARM B
NORAD 39451 		STARLINK-36449
NORAD 67308 		4.973 12.66 3.4e-06
2026-10-12 16:19:44 SWARM B
NORAD 39451 		STARLINK-33554
NORAD 62103 		4.878 11.99 3.8e-06
2026-10-12 16:30:41 SWARM B
NORAD 39451 		STARLINK-31691
NORAD 59856 		3.244 13.86 6.5e-06
2026-10-12 16:39:21 SWARM B
NORAD 39451 		STARLINK-33752
NORAD 63580 		2.716 12.82 3.7e-07
2026-10-12 17:06:06 SWARM B
NORAD 39451 		STARLINK-34090
NORAD 63976 		3.183 10.00 1.0e-05
2026-10-12 18:06:38 SWARM B
NORAD 39451 		STARLINK-6130
NORAD 57104 		2.761 13.83 9.1e-06
2026-10-12 18:09:59 SWARM B
NORAD 39451 		STARLINK-38110
NORAD 100021 		3.019 14.93 5.7e-06
2026-10-12 19:49:09 SWARM B
NORAD 39451 		STARLINK-33861
NORAD 63678 		4.758 8.69 1.6e-07
2026-10-12 21:52:49 SWARM B
NORAD 39451 		STARLINK-32401
NORAD 61865 		3.060 13.34 8.1e-06
2026-10-12 21:56:57 SWARM B
NORAD 39451 		STARLINK-33766
NORAD 63472 		2.894 13.79 8.3e-06
2026-10-12 22:10:29 SWARM B
NORAD 39451 		STARLINK-33861
NORAD 63678 		2.375 8.71 6.6e-07
2026-10-12 22:40:43 SWARM B
NORAD 39451 		STARLINK-31953
NORAD 59898 		2.826 6.57 1.5e-05
2026-10-12 22:45:44 SWARM B
NORAD 39451 		STARLINK-36650
NORAD 67836 		2.471 13.85 1.1e-05
2026-10-12 23:31:05 SWARM B
NORAD 39451 		STARLINK-34322
NORAD 64702 		4.226 14.95 2.9e-06
2026-10-13 00:14:10 SWARM B
NORAD 39451 		STARLINK-32401
NORAD 61865 		3.769 13.31 5.3e-06
2026-10-13 00:18:12 SWARM B
NORAD 39451 		STARLINK-34322
NORAD 64702 		3.913 14.95 3.3e-06
2026-10-13 01:03:44 SWARM B
NORAD 39451 		STARLINK-6379
NORAD 57343 		4.931 13.67 2.9e-06
2026-10-13 01:59:40 SWARM B
NORAD 39451 		STARLINK-30613
NORAD 58077 		2.626 6.08 1.8e-05
2026-10-13 02:45:09 SWARM B
NORAD 39451 		STARLINK-30358
NORAD 57879 		3.819 13.81 4.8e-06
2026-10-13 03:40:56 SWARM B
NORAD 39451 		STARLINK-6306
NORAD 57242 		4.428 9.58 5.5e-06

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