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CASSIOPE

In orbit NORAD 39265 ZTVC-1642-9897-2227-8386 Canada

Observations 1
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2013

Launch

1

Observations all time

Canadian Space Agency multi-mission satellite

Mission description
Mission information
Spacecraft name
CASSIOPE
Other names
Cascade SmallSat and Ionospheric Polar Explorer
Mass
500.0 kg
Website
https://www.eoportal.org/satellite-missions/cassiope
Status
Active
The satellite is in orbit
The network has not received data from this satellite for a long time
Launch and timeline
Launch time
2013-09-23 00:00:00
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
283.15 km
Apogee
643.01 km
Inclination
80.9°
Period
93.9 min
Semi-major axis
6841.1 km
Velocity
7.72 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-10 20:56:55 UTC
Two-line elements (TLE)
1 39265U 13055A   26283.58814176  .00044477 -40853-6  43318-3 0  9995
2 39265  80.9085 285.7151 0262916  31.3184 330.3410 15.33300875685303
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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 13:30:52 CASSIOPE
NORAD 39265 		STARLINK-11453
NORAD 62411 		4.545 5.57 6.1e-06
2026-10-12 06:02:07 CASSIOPE
NORAD 39265 		KUIPER-00141
NORAD 65966 		4.415 13.75 1.1e-07
2026-10-12 12:32:02 CASSIOPE
NORAD 39265 		KUIPER-00252
NORAD 67157 		4.174 10.90 1.8e-07
2026-10-13 02:05:22 CASSIOPE
NORAD 39265 		JILIN-1 GAOFEN 03D50
NORAD 54690 		2.893 15.28 1.8e-07
2026-10-13 19:29:10 CASSIOPE
NORAD 39265 		STARLINK-3046
NORAD 49169 		3.993 14.44 3.6e-06
2026-10-15 10:20:36 CASSIOPE
NORAD 39265 		ORBASTRO-PC-1
NORAD 58258 		3.246 11.68 2.9e-07
2026-10-15 20:51:32 CASSIOPE
NORAD 39265 		COSMOS 2251 DEB
NORAD 38487 		3.263 15.07 1.7e-07
2026-10-15 21:24:30 CASSIOPE
NORAD 39265 		STARLINK-34354
NORAD 64314 		3.168 9.04 1.1e-05
2026-10-16 15:33:06 CASSIOPE
NORAD 39265 		STARLINK-11088
NORAD 59709 		3.993 5.89 7.8e-06
2026-10-16 18:27:08 CASSIOPE
NORAD 39265 		TRANSPORTER-18 OBJECT R
NORAD 100898 		1.546 9.96 1.4e-06
2026-10-16 18:27:08 CASSIOPE
NORAD 39265 		TRANSPORTER-18 OBJECT T
NORAD 100900 		3.522 9.96 2.8e-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