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FLOCK 4H-31

In orbit NORAD 66734 IITQ-0849-6643-3425-5136

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-31
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
498.20 km
Apogee
502.11 km
Inclination
97.4°
Period
94.7 min
Semi-major axis
6878.3 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 66734U 25276BW  26286.77813996  .00006840  00000-0  31249-3 0  9992
2 66734  97.4063 358.1369 0002802 348.5168  11.6003 15.20888822 48433
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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 15:38:47 FLOCK 4H-31
NORAD 66734 		OPTISAT
NORAD 68418 		3.379 12.67 2.4e-07
2026-10-14 16:26:11 FLOCK 4H-31
NORAD 66734 		OPTISAT
NORAD 68418 		4.001 12.64 1.7e-07
2026-10-14 18:26:35 SEMI-1N
NORAD 66297 		FLOCK 4H-31
NORAD 66734 		2.584 14.31 3.1e-07
2026-10-14 21:20:54 KANOPUS-V 4
NORAD 43181 		FLOCK 4H-31
NORAD 66734 		3.216 15.00 1.6e-07
2026-10-14 23:10:51 SEMI-1P
NORAD 66298 		FLOCK 4H-31
NORAD 66734 		4.017 14.30 1.3e-07
2026-10-15 12:10:25 FLOCK 4H-31
NORAD 66734 		MARS-1
NORAD 68830 		3.115 12.68 2.8e-07
2026-10-15 17:38:31 MICE-1
NORAD 66684 		FLOCK 4H-31
NORAD 66734 		2.760 0.04 5.8e-07
2026-10-16 03:41:02 HXMT (HUIYAN)
NORAD 42758 		FLOCK 4H-31
NORAD 66734 		3.433 13.38 2.1e-07
2026-10-16 09:53:22 TOMORROW-S9
NORAD 66309 		FLOCK 4H-31
NORAD 66734 		4.520 14.39 9.8e-08
2026-10-16 14:10:32 FLOCK 4H-31
NORAD 66734 		FOSSASA-2E23
NORAD 66788 		3.935 0.11 2.9e-07
2026-10-17 04:48:28 SEMI-1L
NORAD 66294 		FLOCK 4H-31
NORAD 66734 		3.541 14.43 1.6e-07
2026-10-17 10:45:15 FLOCK 4H-31
NORAD 66734 		TRANSPORTER-16 OBJECT L
NORAD 68426 		2.772 12.63 3.6e-07
2026-10-17 16:01:19 MALLIGYONG-1
NORAD 58400 		FLOCK 4H-31
NORAD 66734 		1.732 15.00 5.5e-07
2026-10-18 02:14:43 FLOCK 4H-31
NORAD 66734 		HULIANWANG JISHU SHIYAN 9C
NORAD 68833 		4.284 14.53 1.0e-07
2026-10-18 14:51:48 FLOCK 4H-31
NORAD 66734 		HULIANWANG JISHU SHIYAN 9A
NORAD 68831 		3.849 14.59 1.3e-07
2026-10-18 15:54:49 FLOCK 4H-31
NORAD 66734 		FLOCK 4H-33
NORAD 66736 		4.935 0.11 1.8e-07
2026-10-19 01:55:57 HULIANWANG JISHU SHIYAN 6B
NORAD 63429 		FLOCK 4H-31
NORAD 66734 		3.172 14.52 1.9e-07
2026-10-19 02:11:14 ZIYUAN 3-03 (ZY 3-03)
NORAD 45939 		FLOCK 4H-31
NORAD 66734 		3.420 0.56 3.8e-07
2026-10-19 14:01:27 ZIYUAN 3-02 (ZY 3-02)
NORAD 41556 		FLOCK 4H-31
NORAD 66734 		2.263 0.27 8.6e-07
2026-10-19 17:49:23 FLOCK 4H-31
NORAD 66734 		APEX R/B
NORAD 23198 		3.557 14.99 1.0e-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