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FLOCK 4H-12

In orbit NORAD 66715 WJKC-3041-6879-1754-0470

Observations 0
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Transporter-15 Rideshare : VSFB SLC-4E

Falcon 9

Carrier rocket

База Вандерберг

Spaceport

0

Observations all time

Mission information
Spacecraft name
FLOCK 4H-12
Status
Active
The satellite is in orbit
The network has not received data from this satellite for a long time
Launch and timeline
Launch
Transporter-15 Rideshare : VSFB SLC-4E
Carrier rocket
Falcon 9
Spaceport
База Вандерберг
Launch time
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
497.25 km
Apogee
498.02 km
Inclination
97.4°
Period
94.6 min
Semi-major axis
6875.8 km
Velocity
7.61 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-10 04:46:20 UTC
Two-line elements (TLE)
1 66715U 25276BB  26282.45550133  .00004570  00000-0  20490-3 0  9997
2 66715  97.4098 354.3774 0000563 309.4842  50.6344 15.21714329 48112
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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 22:03:09 FLOCK 4H-12
NORAD 66715 		SITRO-AIS-57
NORAD 67256 		4.046 0.13 2.7e-07
2026-10-11 10:06:44 FLOCK 4H-12
NORAD 66715 		KIRARI (OICETS)
NORAD 28809 		4.788 14.99 7.1e-08
2026-10-11 15:24:38 HAWK-C
NORAD 43799 		FLOCK 4H-12
NORAD 66715 		3.965 2.58 2.8e-07
2026-10-12 00:24:47 FLOCK 4H-12
NORAD 66715 		FRONTIERSAT
NORAD 69015 		2.188 15.08 3.3e-07
2026-10-12 01:59:25 FLOCK 4H-12
NORAD 66715 		FRONTIERSAT
NORAD 69015 		4.448 15.08 7.9e-08
2026-10-12 10:20:26 FLOCK 4H-12
NORAD 66715 		PIAST-S2
NORAD 66757 		4.823 0.02 1.9e-07
2026-10-12 11:08:02 FLOCK 4H-12
NORAD 66715 		PIAST-S2
NORAD 66757 		3.260 0.02 4.1e-07
2026-10-12 11:54:58 FLOCK 4H-12
NORAD 66715 		PIAST-S2
NORAD 66757 		1.332 0.02 2.5e-06
2026-10-12 12:41:56 FLOCK 4H-12
NORAD 66715 		PIAST-S2
NORAD 66757 		3.109 0.02 4.6e-07
2026-10-13 14:11:36 KANOPUS-V 5
NORAD 43876 		FLOCK 4H-12
NORAD 66715 		2.087 15.01 3.7e-07
2026-10-13 15:46:16 KANOPUS-V 5
NORAD 43876 		FLOCK 4H-12
NORAD 66715 		1.356 15.01 8.8e-07
2026-10-13 16:39:35 FLOCK 4H-12
NORAD 66715 		GEN1A-1
NORAD 69004 		2.613 15.09 2.3e-07
2026-10-13 17:20:56 KANOPUS-V 5
NORAD 43876 		FLOCK 4H-12
NORAD 66715 		4.427 15.01 8.2e-08
2026-10-13 18:08:17 KANOPUS-V 5
NORAD 43876 		FLOCK 4H-12
NORAD 66715 		4.065 15.04 9.8e-08
2026-10-13 18:14:18 FLOCK 4H-12
NORAD 66715 		GEN1A-1
NORAD 69004 		1.321 15.09 9.0e-07
2026-10-13 19:42:57 KANOPUS-V 5
NORAD 43876 		FLOCK 4H-12
NORAD 66715 		3.730 15.04 1.2e-07
2026-10-13 21:54:07 FLOCK 4H-12
NORAD 66715 		TRANSPORTER-16 OBJECT Z
NORAD 68439 		4.795 12.68 1.2e-07
2026-10-15 10:55:24 UNICORN-2L
NORAD 58727 		FLOCK 4H-12
NORAD 66715 		3.756 0.30 3.1e-07
2026-10-16 03:19:12 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		4.378 0.01 2.3e-07
2026-10-16 04:27:34 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		3.046 0.01 7.2e-07
2026-10-16 05:01:07 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		2.405 0.01 7.2e-07
2026-10-16 05:55:27 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		2.025 0.01 2.1e-06
2026-10-16 06:42:00 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		1.395 0.01 2.1e-06
2026-10-16 07:23:36 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		2.498 0.01 2.1e-06
2026-10-16 07:27:40 FLOCK 4H-12
NORAD 66715 		SITRO-AIS-60
NORAD 67260 		3.444 0.10 3.7e-07
2026-10-16 08:22:42 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		2.799 0.01 5.4e-07
2026-10-16 08:49:31 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		3.866 0.01 5.4e-07
2026-10-16 10:03:17 FLOCK 4H-12
NORAD 66715 		T.MICROSAT-1
NORAD 66766 		4.947 0.01 1.8e-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