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STARCLOUD-1

In orbit NORAD 66303 MEKC-1774-6115-5644-8771 United States of America

Observations 13
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2025

Falcon 9 Block 5 | Bandwagon 4 (Dedicated Mid-Inclination Rideshare)

Falcon 9 Block 5

Carrier rocket

Space Launch Complex 40

Spaceport

13

Observations all time

Mission information
Spacecraft name
STARCLOUD-1
Other names
LUMEN-1
Website
https://www.starcloud.com/
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 | Bandwagon 4 (Dedicated Mid-Inclination Rideshare)
Carrier rocket
Falcon 9 Block 5
Spaceport
Space Launch Complex 40
Launch time
2025-11-02 05:09:00
Separation time
2025-11-02 06:22:38
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
497.08 km
Apogee
504.00 km
Inclination
45.4°
Period
94.6 min
Semi-major axis
6878.7 km
Velocity
7.61 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-09 12:46:41 UTC
Two-line elements (TLE)
1 66303U 25248L   26282.24977613  .00004836  00000-0  21853-3 0  9991
2 66303  45.4000 227.5254 0005034 320.5518  39.5002 15.22268045 51916
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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 11:50:07 SPACEMOBILE-005
NORAD 61046 		STARCLOUD-1
NORAD 66303 		0.558 7.51 1.3e-05
2026-10-12 05:28:09 JAY-D1
NORAD 62669 		STARCLOUD-1
NORAD 66303 		3.117 14.09 2.2e-07
2026-10-12 09:24:25 JAY-D2
NORAD 62665 		STARCLOUD-1
NORAD 66303 		4.043 14.08 1.3e-07
2026-10-13 01:10:58 JAY-C
NORAD 62668 		STARCLOUD-1
NORAD 66303 		4.352 14.18 1.1e-07
2026-10-13 01:58:15 JAY-C
NORAD 62668 		STARCLOUD-1
NORAD 66303 		4.694 14.19 9.6e-08
2026-10-13 20:05:19 STARCLOUD-1
NORAD 66303 		SITRO-AIS-65
NORAD 67266 		2.272 14.21 4.1e-07
2026-10-14 15:47:57 STARCLOUD-1
NORAD 66303 		FLOCK 4H-21
NORAD 66724 		1.383 14.28 1.1e-06
2026-10-15 16:57:06 MONITOR-2 (RS39S)
NORAD 57184 		STARCLOUD-1
NORAD 66303 		3.647 14.14 1.6e-07
2026-10-15 22:33:58 STARCLOUD-1
NORAD 66303 		ANISCSAT-1
NORAD 66671 		3.517 14.39 1.6e-07
2026-10-16 04:45:37 SHIYAN-31
NORAD 65945 		STARCLOUD-1
NORAD 66303 		2.125 12.93 5.9e-07
2026-10-16 09:37:31 CONNECTA IOT-1
NORAD 60472 		STARCLOUD-1
NORAD 66303 		2.357 14.43 3.6e-07
2026-10-16 10:16:32 SHIYAN-31
NORAD 65945 		STARCLOUD-1
NORAD 66303 		0.794 12.96 4.2e-06

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