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RANGE B

In orbit NORAD 43773 OTVL-0209-5913-2544-1321 United States of America

Observations 1
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2018

Falcon 9 Block 5 | Spaceflight SSO-A

Falcon 9 Block 5

Carrier rocket

Space Launch Complex 4E

Spaceport

1

Observations all time

Mission information
Spacecraft name
RANGE B
Other names
Ranging and Nanosatellite Guidance Experiment B
Website
https://ssdl.gatech.edu/research/projects/ranging-and-nanosatellite-guidance-experiment-range
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 | Spaceflight SSO-A
Carrier rocket
Falcon 9 Block 5
Spaceport
Space Launch Complex 4E
Launch time
2018-12-03 00:00:00
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
514.42 km
Apogee
526.42 km
Inclination
97.4°
Period
95.1 min
Semi-major axis
6898.5 km
Velocity
7.6 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-11 12:56:42 UTC
Two-line elements (TLE)
1 43773U 18099R   26284.05230707  .00005903  00000-0  32666-3 0  9990
2 43773  97.3848 323.2327 0008688 312.0528  47.9964 15.14189046430025
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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
2026-10-12 09:59:49 RANGE-A
NORAD 43773 		USA 3
NORAD 15071 		4.360 14.92 8.7e-08
2026-10-12 10:47:21 RANGE-A
NORAD 43773 		USA 3
NORAD 15071 		2.900 14.94 2.0e-07
2026-10-12 11:34:57 RANGE-A
NORAD 43773 		USA 3
NORAD 15071 		2.524 14.92 2.6e-07
2026-10-12 23:53:03 RANGE-A
NORAD 43773 		STARLINK-6198
NORAD 56768 		4.517 15.05 2.3e-06
2026-10-13 02:00:50 RANGE-A
NORAD 43773 		OBJECT F
NORAD 68203 		4.152 4.41 2.5e-07
2026-10-14 13:56:49 RANGE-A
NORAD 43773 		COSMOS 2251 DEB
NORAD 34118 		4.695 3.81 1.9e-07
2026-10-15 11:06:50 RANGE-A
NORAD 43773 		OBJECT A
NORAD 67248 		1.177 2.10 3.2e-06
2026-10-17 02:23:40 RANGE-A
NORAD 43773 		STARLINK-3661
NORAD 52129 		0.989 14.69 5.6e-05
2026-10-17 11:18:05 RANGE-A
NORAD 43773 		STARLINK-5295
NORAD 55306 		3.711 15.00 3.6e-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