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GLOBAL-9

In orbit NORAD 47971 PKPN-0429-5016-6529-0425 United States of America

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2021

Launch

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Mission information
Spacecraft name
GLOBAL-9
Other names
BlackSky 7
Website
https://www.blacksky.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 time
2021-03-22 00:00:00
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
412.65 km
Apogee
417.95 km
Inclination
45.0°
Period
92.8 min
Semi-major axis
6793.3 km
Velocity
7.66 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-12 05:08:34 UTC
Two-line elements (TLE)
1 47971U 21023G   26284.93022059  .00026420  00000-0  44785-3 0  9993
2 47971  44.9806 312.1871 0003812 355.0921   4.9933 15.51090748313042
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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
2026-10-13 06:40:33 GLOBAL-9
NORAD 47971 		SL-3 R/B
NORAD 10114 		4.942 14.41 2.3e-07
2026-10-17 03:07:00 GLOBAL-9
NORAD 47971 		ORBASTRO-PC-1
NORAD 58258 		4.596 11.71 1.4e-07
2026-10-17 06:03:47 GLOBAL-9
NORAD 47971 		STARLINK-38170
NORAD 100636 		3.828 11.23 6.6e-06
2026-10-17 08:22:55 GLOBAL-9
NORAD 47971 		STARLINK-38170
NORAD 100636 		3.750 11.24 6.9e-06
2026-10-17 11:46:20 GLOBAL-9
NORAD 47971 		CSSWE
NORAD 38761 		4.677 10.75 1.5e-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