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FLOCK 4H-21

In orbit NORAD 66724 EQCT-5008-7484-0696-8415

Observations 0
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Falcon 9 Block 5 | Transporter 15 (Dedicated SSO Rideshare)

Falcon 9 Block 5

Carrier rocket

Space Launch Complex 4E

Spaceport

0

Observations all time

Mission information
Spacecraft name
FLOCK 4H-21
Status
Active
The satellite is in orbit
The network has not received data from this satellite for a long time
Launch and timeline
Launch
Falcon 9 Block 5 | Transporter 15 (Dedicated SSO Rideshare)
Carrier rocket
Falcon 9 Block 5
Spaceport
Space Launch Complex 4E
Launch time
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
495.84 km
Apogee
497.62 km
Inclination
97.4°
Period
94.6 min
Semi-major axis
6874.8 km
Velocity
7.6 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-14 06:09:05 UTC
Two-line elements (TLE)
1 66724U 25276BL  26286.73407784  .00007178  00000-0  31713-3 0  9992
2 66724  97.4077 358.7062 0001327 210.5437 149.5723 15.22022287 47718
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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
2026-10-14 15:41:46 FLOCK 4H-21
NORAD 66724 		COSMOS 249 DEB
NORAD 3609 		1.698 15.24 5.7e-07
2026-10-14 15:47:53 STARCLOUD-1
NORAD 66303 		FLOCK 4H-21
NORAD 66724 		2.986 14.28 2.3e-07
2026-10-14 16:06:05 JAY-C
NORAD 62668 		FLOCK 4H-21
NORAD 66724 		2.119 0.67 9.8e-07
2026-10-14 17:55:20 QPS-SAR-5 (TSUKUYOMI-I)
NORAD 58578 		FLOCK 4H-21
NORAD 66724 		4.403 9.05 1.9e-07
2026-10-15 13:14:26 STARLINK-4472
NORAD 53661 		FLOCK 4H-21
NORAD 66724 		3.964 14.87 3.3e-06
2026-10-15 16:49:49 FLOCK 4H-21
NORAD 66724 		COSMOS 2251 DEB
NORAD 34451 		4.395 15.16 7.8e-08
2026-10-17 02:06:11 TOMORROW-S6
NORAD 63225 		FLOCK 4H-21
NORAD 66724 		2.976 15.10 1.8e-07
2026-10-17 06:02:46 TOMORROW-S6
NORAD 63225 		FLOCK 4H-21
NORAD 66724 		4.778 15.10 6.9e-08
2026-10-17 12:59:47 FLOCK 4H-21
NORAD 66724 		IRIDIUM 33 DEB
NORAD 46971 		2.513 15.20 2.3e-07
2026-10-17 13:47:05 FLOCK 4H-21
NORAD 66724 		IRIDIUM 33 DEB
NORAD 46971 		2.277 15.22 2.9e-07
2026-10-17 17:54:54 FLOCK 4H-21
NORAD 66724 		COSMOS 2251 DEB
NORAD 37968 		1.505 3.15 1.9e-06
2026-10-19 02:08:54 FLOCK 4H-21
NORAD 66724 		GEN1A-1
NORAD 69004 		3.292 15.10 1.4e-07
2026-10-19 03:43:37 FLOCK 4H-21
NORAD 66724 		GEN1A-1
NORAD 69004 		4.826 15.10 6.7e-08
2026-10-19 04:30:58 FLOCK 4H-21
NORAD 66724 		GEN1A-1
NORAD 69004 		4.965 15.08 6.4e-08
2026-10-19 07:13:21 FLOCK 4H-21
NORAD 66724 		COSMOS 2251 DEB
NORAD 40794 		1.939 14.95 4.4e-07
2026-10-19 09:42:32 MONITOR-2 (RS39S)
NORAD 57184 		FLOCK 4H-21
NORAD 66724 		1.209 1.90 3.0e-06
2026-10-19 11:41:57 YAOGAN-39 05A
NORAD 58557 		FLOCK 4H-21
NORAD 66724 		2.716 7.93 5.2e-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