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3CAT-4

In orbit NORAD 60236 MEGR-8410-6900-4102-7890 Spain

Observations 19
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2024

Launch

19

Observations all time

Mission information
Spacecraft name
3CAT-4
Other names
³Cat-4, 3CAT4, ³Cat4
Website
https://nanosatlab.upc.edu/en/missions-and-projects/3cat-4
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
2024-07-09 19:00:00
Separation time
2024-07-09 20:05:56
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
539.94 km
Apogee
576.13 km
Inclination
62.0°
Period
95.8 min
Semi-major axis
6936.2 km
Velocity
7.59 km/s
Orbital elements
TLE source
Space-Track.org
TLE updated
2026-10-08 08:46:44 UTC
Two-line elements (TLE)
1 60236U 24128B   26280.91511206  .00001006  00000-0  90519-4 0  9992
2 60236  61.9916 192.8312 0026082 165.4584 194.7263 15.02527702123041
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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 10:00:47 FLORIPASAT-1
NORAD 44885 		3CAT-4
NORAD 60236 		2.267 14.74 3.4e-07
2026-10-11 16:30:51 LEMUR-2-LUCILLE-ROSE
NORAD 65403 		3CAT-4
NORAD 60236 		4.213 14.05 1.2e-07
2026-10-11 18:06:46 LEMUR-2-LUCILLE-ROSE
NORAD 65403 		3CAT-4
NORAD 60236 		2.218 14.04 4.4e-07
2026-10-12 02:39:23 CENTAURI-7
NORAD 62708 		3CAT-4
NORAD 60236 		2.586 14.89 2.5e-07
2026-10-13 19:02:57 TK-2
NORAD 52150 		3CAT-4
NORAD 60236 		4.253 7.43 2.2e-07
2026-10-14 20:15:44 CENTAURI-7
NORAD 62708 		3CAT-4
NORAD 60236 		4.255 14.75 9.7e-08
2026-10-14 20:58:59 OBJECT A
NORAD 69538 		3CAT-4
NORAD 60236 		0.603 14.89 4.6e-06
2026-10-15 00:38:44 STARLINK-34632
NORAD 64792 		3CAT-4
NORAD 60236 		3.676 12.70 6.0e-06
2026-10-15 02:14:36 STARLINK-34696
NORAD 64808 		3CAT-4
NORAD 60236 		4.120 12.70 4.8e-06
2026-10-15 10:31:55 EZIE-C
NORAD 63249 		3CAT-4
NORAD 60236 		3.712 4.86 3.1e-07
2026-10-15 12:59:13 OBJECT H
NORAD 69545 		3CAT-4
NORAD 60236 		4.496 14.85 8.4e-08
2026-10-16 16:02:32 TYVAK-182A
NORAD 48271 		3CAT-4
NORAD 60236 		2.600 14.94 2.4e-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