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FORMOSAT-8A

In orbit NORAD 66666 TUSR-8011-4446-8744-0509 Taiwan

Observations 0
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2025

Falcon 9 Block 5 | Transporter 15 (Dedicated SSO Rideshare)

Falcon 9 Block 5

Carrier rocket

Space Launch Complex 4E

Spaceport

0

Observations all time

Mission information
Spacecraft name
FORMOSAT-8A
Website
https://www.tasa.org.tw/en-US/missions/detail/FORMOSAT-8
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 | Transporter 15 (Dedicated SSO Rideshare)
Carrier rocket
Falcon 9 Block 5
Spaceport
Space Launch Complex 4E
Launch time
2025-11-28 18:44:00
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
557.94 km
Apogee
564.96 km
Inclination
97.7°
Period
95.9 min
Semi-major axis
6939.6 km
Velocity
7.58 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-14 14:09:04 UTC
Two-line elements (TLE)
1 66666U 25276A   26287.27652091  .00001581  00000-0  12922-3 0  9993
2 66666  97.6528 359.7314 0005059 208.2611 151.8339 15.00792314 47924
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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
2026-10-15 17:46:40 FORMOSAT-8A
NORAD 66666 		PEGASUS R/B
NORAD 27652 		4.332 14.04 1.1e-07
2026-10-16 03:34:05 STARLINK-5236
NORAD 55274 		FORMOSAT-8A
NORAD 66666 		4.525 15.04 2.3e-06
2026-10-16 04:38:23 FORMOSAT-8A
NORAD 66666 		CZ-6A DEB
NORAD 60656 		3.171 11.23 3.1e-07
2026-10-16 14:33:21 FORMOSAT-8A
NORAD 66666 		STARLINK-35794
NORAD 67085 		3.789 15.04 3.3e-06
2026-10-16 23:02:04 FORMOSAT-8A
NORAD 66666 		OBJECT B
NORAD 100956 		3.335 3.07 3.9e-07
2026-10-17 06:31:08 FORMOSAT-8A
NORAD 66666 		STARLINK-36205
NORAD 67098 		3.751 15.03 3.3e-06
2026-10-17 09:53:42 STARLINK-5260
NORAD 55275 		FORMOSAT-8A
NORAD 66666 		4.914 15.06 1.9e-06
2026-10-17 19:50:11 FORMOSAT-8A
NORAD 66666 		NEONSAT-03
NORAD 100961 		3.904 3.07 2.8e-07
2026-10-18 15:02:17 FORMOSAT-8A
NORAD 66666 		NEONSAT-04
NORAD 100962 		4.262 3.07 2.4e-07
2026-10-18 22:27:04 FORMOSAT-8A
NORAD 66666 		STARLINK-35784
NORAD 67093 		3.922 14.96 3.2e-06
2026-10-19 22:25:27 FORMOSAT-8A
NORAD 66666 		STARLINK-36193
NORAD 67099 		4.800 14.90 2.2e-06
2026-10-20 03:50:29 FORMOSAT-8A
NORAD 66666 		OBJECT L
NORAD 100965 		2.210 3.07 8.9e-07
2026-10-20 15:31:22 SBSS (USA 216)
NORAD 37168 		FORMOSAT-8A
NORAD 66666 		4.587 14.98 7.5e-08

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