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FLOCK 4H-18

In orbit NORAD 66721 OVJF-2979-4927-0624-6119

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-18
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
497.46 km
Apogee
501.78 km
Inclination
97.4°
Period
94.7 min
Semi-major axis
6877.7 km
Velocity
7.62 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-14 06:09:05 UTC
Two-line elements (TLE)
1 66721U 25276BH  26286.95574244  .00007300  00000-0  33163-3 0  9997
2 66721  97.4071 358.3965 0003086 355.7482   4.3727 15.21058433 48469
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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 13:09:48 ETIHAD-SAT
NORAD 63226 		FLOCK 4H-18
NORAD 66721 		3.091 15.10 1.6e-07
2026-10-14 15:06:58 FLOCK 4H-18
NORAD 66721 		ZIYUAN 3-04 (ZY 3-04)
NORAD 67131 		4.032 0.73 2.7e-07
2026-10-15 01:22:55 FLOCK 4H-18
NORAD 66721 		FLOCK 4H-35
NORAD 66738 		3.212 0.07 4.3e-07
2026-10-15 02:10:13 FLOCK 4H-18
NORAD 66721 		FLOCK 4H-35
NORAD 66738 		3.136 0.07 4.5e-07
2026-10-15 20:19:41 FLOCK 4H-18
NORAD 66721 		FLOCK 4H-25
NORAD 66728 		4.411 0.07 2.3e-07
2026-10-15 20:45:28 ORBASTRO-TR5
NORAD 63236 		FLOCK 4H-18
NORAD 66721 		3.781 15.10 1.1e-07
2026-10-16 14:31:48 IRIDE-MS1-EAGLET 2-4
NORAD 66698 		FLOCK 4H-18
NORAD 66721 		1.570 0.00 8.5e-06
2026-10-16 15:15:56 IRIDE-MS1-EAGLET 2-4
NORAD 66698 		FLOCK 4H-18
NORAD 66721 		0.716 0.00 8.5e-06
2026-10-17 01:30:32 FLOCK 4H-18
NORAD 66721 		CZ-6A DEB
NORAD 56246 		2.358 8.50 6.8e-07
2026-10-17 21:30:03 KANOPUS-V-IK
NORAD 42825 		FLOCK 4H-18
NORAD 66721 		2.586 15.01 2.4e-07
2026-10-17 22:54:04 FLOCK 4H-18
NORAD 66721 		TRANSPORTER-16 OBJECT AT
NORAD 68457 		2.350 12.64 5.0e-07
2026-10-17 23:04:44 KANOPUS-V-IK
NORAD 42825 		FLOCK 4H-18
NORAD 66721 		4.072 15.01 9.8e-08
2026-10-18 00:28:47 FLOCK 4H-18
NORAD 66721 		TRANSPORTER-16 OBJECT AT
NORAD 68457 		4.927 12.64 1.1e-07
2026-10-18 01:16:08 FLOCK 4H-18
NORAD 66721 		TRANSPORTER-16 OBJECT AT
NORAD 68457 		3.054 12.67 2.9e-07
2026-10-18 06:50:57 FLOCK 4H-18
NORAD 66721 		UNKNOWN
NORAD 87271 		3.377 13.23 2.3e-07
2026-10-18 06:53:32 STARLINK-5296
NORAD 55312 		FLOCK 4H-18
NORAD 66721 		4.722 14.87 2.3e-06
2026-10-18 13:51:46 ASNARO
NORAD 40298 		FLOCK 4H-18
NORAD 66721 		2.856 0.18 5.4e-07
2026-10-18 20:57:11 FLOCK 4H-15
NORAD 66718 		FLOCK 4H-18
NORAD 66721 		4.555 0.02 2.1e-07
2026-10-19 04:38:26 FLOCK 4H-18
NORAD 66721 		LPNTSAT-001 (IOD-1)
NORAD 68408 		4.671 14.98 7.5e-08
2026-10-19 07:15:58 FLOCK 4H-18
NORAD 66721 		IRIDE-MS1-EAGLET 2-16
NORAD 68452 		3.401 12.70 2.4e-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