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FOSSASAT-2E21

In orbit NORAD 64536 RBAW-0155-7922-9410-2702

Observations 9
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2025

Falcon 9 Block 5 | Transporter 14 (Dedicated SSO Rideshare)

Falcon 9 Block 5

Carrier rocket

Space Launch Complex 4E

Spaceport

9

Observations all time

Mission information
Spacecraft name
FOSSASAT-2E21
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 14 (Dedicated SSO Rideshare)
Carrier rocket
Falcon 9 Block 5
Spaceport
Space Launch Complex 4E
Launch time
2025-06-23 21:25:00
Separation time
2025-06-23 22:23:04
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
497.77 km
Apogee
505.00 km
Inclination
97.5°
Period
94.7 min
Semi-major axis
6879.5 km
Velocity
7.6 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-10 12:56:50 UTC
Two-line elements (TLE)
1 64536U 25135J   26283.20218041  .00002325  00000-0  10966-3 0  9996
2 64536  97.4743  36.4046 0005255 131.3332 228.8356 15.20472043 72298
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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 13:32:46 LIZZIESAT-3 (LS-3)
NORAD 63233 		FOSSASAT-2E21
NORAD 64536 		3.819 13.99 1.5e-07
2026-10-12 03:27:45 FOSSASAT-2E21
NORAD 64536 		COSMOS 2251 DEB
NORAD 40794 		3.777 15.18 1.1e-07
2026-10-12 04:32:22 FOSSASAT-2E21
NORAD 64536 		HELIOS
NORAD 69021 		1.594 14.29 8.1e-07
2026-10-12 08:43:03 FOSSASAT-2E21
NORAD 64536 		VIREON-1
NORAD 68434 		2.537 14.73 2.8e-07
2026-10-13 08:15:56 FOSSASAT-2E21
NORAD 64536 		OBJECT B
NORAD 65260 		1.421 1.72 2.2e-06
2026-10-13 21:36:16 FOSSASAT-2E21
NORAD 64536 		BRO-21
NORAD 69007 		2.147 14.31 4.4e-07
2026-10-14 00:30:00 FOSSASAT-2E21
NORAD 64536 		IRIDIUM 5
NORAD 24795 		1.766 15.25 4.1e-06
2026-10-14 01:47:02 FOSSASAT-2E21
NORAD 64536 		BESSA
NORAD 68836 		3.075 14.74 1.9e-07
2026-10-14 03:21:49 FOSSASAT-2E21
NORAD 64536 		BESSA
NORAD 68836 		2.154 14.74 3.8e-07
2026-10-14 20:36:47 FOSSASAT-2E21
NORAD 64536 		COSMOS 660
NORAD 7337 		4.075 13.53 3.0e-07
2026-10-15 14:20:39 YAOGAN-36 05C
NORAD 57456 		FOSSASAT-2E21
NORAD 64536 		4.025 7.93 2.4e-07
2026-10-15 17:40:34 FOSSASAT-2E21
NORAD 64536 		SL-14 R/B
NORAD 20262 		0.455 2.49 4.9e-05
2026-10-16 04:59:13 FOSSASAT-2E19 (TAT-E)
NORAD 62676 		FOSSASAT-2E21
NORAD 64536 		3.090 4.80 4.4e-07
2026-10-16 12:53:09 FOSSASAT-2E21
NORAD 64536 		FLOCK 4H-25
NORAD 66728 		2.310 5.32 7.8e-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