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FORMOSAT-5

In orbit NORAD 42920 HZRL-0408-5629-4106-3523 Taiwan

Observations 22
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2017

Launch

22

Observations all time

Mission information
Spacecraft name
FORMOSAT-5
Other names
2017-049A
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
2017-08-24 00:00:00
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
710.73 km
Apogee
728.79 km
Inclination
98.2°
Period
99.2 min
Semi-major axis
7097.9 km
Velocity
7.48 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-11 04:56:36 UTC
Two-line elements (TLE)
1 42920U 17049A   26283.91088006  .00000148  00000-0  48595-4 0  9999
2 42920  98.2161 356.5906 0012721  88.2484 272.0168 14.50914068483455
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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 12:35:45 FORMOSAT-5
NORAD 42920 		COSMOS 304
NORAD 4138 		1.130 3.81 6.8e-06
2026-10-13 06:07:00 FORMOSAT-5
NORAD 42920 		CZ-3C DEB
NORAD 40196 		2.837 14.93 3.2e-07
2026-10-13 09:36:11 FORMOSAT-5
NORAD 42920 		COSMOS 2251 DEB
NORAD 35587 		3.934 14.92 9.8e-08
2026-10-13 09:52:37 FORMOSAT-5
NORAD 42920 		CZ-2D DEB
NORAD 38180 		4.495 5.69 2.0e-07
2026-10-13 20:36:06 FORMOSAT-5
NORAD 42920 		METOP-A
NORAD 29499 		0.031 4.79 4.3e-03
2026-10-14 10:39:58 FORMOSAT-5
NORAD 42920 		CZ-6A DEB
NORAD 54939 		4.945 3.50 1.8e-07
2026-10-15 01:29:44 FORMOSAT-5
NORAD 42920 		SL-16 DEB
NORAD 22437 		3.421 13.87 1.8e-07
2026-10-15 02:05:21 FORMOSAT-5
NORAD 42920 		NOAA 16 DEB
NORAD 41500 		4.720 14.77 7.3e-08
2026-10-15 02:26:35 FORMOSAT-5
NORAD 42920 		SCOUT G-1 DEB
NORAD 21712 		0.342 13.92 1.8e-05
2026-10-15 17:20:24 FORMOSAT-5
NORAD 42920 		COSMOS 1275 DEB
NORAD 42114 		1.632 14.93 5.6e-07
2026-10-15 22:58:43 FORMOSAT-5
NORAD 42920 		THORAD AGENA D DEB
NORAD 14466 		4.526 14.03 1.0e-07
2026-10-16 02:23:56 FORMOSAT-5
NORAD 42920 		DMSP 5D-2 F14 DEB
NORAD 62945 		2.909 0.90 5.2e-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