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COSMOS 2535

In orbit NORAD 44421 YPRU-6267-6659-9594-2221 Russia

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2019

Launch

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Observations all time

Mission information
Spacecraft name
COSMOS 2535
Other names
2019-039A
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
2019-07-10 00:00:00
Separation time
2019-07-10 00:00:00
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
582.82 km
Apogee
593.94 km
Inclination
97.6°
Period
96.5 min
Semi-major axis
6966.5 km
Velocity
7.56 km/s
Orbital elements
TLE source
Space-Track.org
TLE updated
2026-10-08 08:46:43 UTC
Two-line elements (TLE)
1 44421U 19039A   26280.94424505  .00000629  00000-0  67157-4 0  9995
2 44421  97.5705 304.7682 0007978 186.3546 173.7574 14.92106216393454
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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 01:19:36 PRC TEST SPACECRAFT 4
NORAD 67689 		COSMOS 2535
NORAD 44421 		2.016 13.95 5.4e-07
2026-10-12 20:37:25 IRIDE-MS2-HEO-10
NORAD 68982 		COSMOS 2535
NORAD 44421 		2.886 13.52 2.9e-07
2026-10-12 21:25:41 IRIDE-MS2-HEO-10
NORAD 68982 		COSMOS 2535
NORAD 44421 		2.616 13.48 3.5e-07
2026-10-13 22:22:12 R5-S9
NORAD 69901 		COSMOS 2535
NORAD 44421 		4.501 13.30 1.2e-07
2026-10-13 23:10:27 SCION-X (INSPIRESAT 6)
NORAD 69880 		COSMOS 2535
NORAD 44421 		3.382 13.27 2.2e-07
2026-10-13 23:10:28 R5-S9
NORAD 69901 		COSMOS 2535
NORAD 44421 		1.944 13.26 6.5e-07
2026-10-15 12:53:56 LEMUR-2-HUBBLE-4
NORAD 64565 		COSMOS 2535
NORAD 44421 		4.577 10.52 1.6e-07
2026-10-16 22:54:34 PRC TEST SPACECRAFT 4
NORAD 67689 		COSMOS 2535
NORAD 44421 		1.876 12.45 7.9e-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