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Ten-Koh

In orbit NORAD 43677 ILWB-0355-7294-3027-0757 Japan

Observations 2
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2018

Launch

2

Observations all time

Mission information
Spacecraft name
Ten-Koh
Other names
JG6YKY; TENKOH
Website
http://kit-okuyama-lab.com/en/ten-koh
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
2018-10-29 00:00:00
Separation time
Satellite appearance
Data for the last 30 days
Orbital parameters of the satellite
Perigee
546.07 km
Apogee
561.26 km
Inclination
98.1°
Period
95.8 min
Semi-major axis
6931.8 km
Velocity
7.59 km/s
Orbital elements
TLE source
Celestrak
TLE updated
2026-10-11 12:56:42 UTC
Two-line elements (TLE)
1 43677U 18084G   26284.08620945  .00002225  00000-0  16864-3 0  9993
2 43677  98.0714 121.3524 0010981  90.7026 269.5457 15.03330269433571
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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 21:48:32 TEN-KOH
NORAD 43677 		H-2A R/B
NORAD 33500 		3.766 14.91 1.2e-07
2026-10-12 23:24:23 TEN-KOH
NORAD 43677 		H-2A R/B
NORAD 33500 		3.786 14.91 1.2e-07
2026-10-13 05:37:39 TEN-KOH
NORAD 43677 		FLORIPASAT-1
NORAD 44885 		3.980 11.70 1.9e-07
2026-10-13 16:49:00 TEN-KOH
NORAD 43677 		CZ-6A DEB
NORAD 56600 		4.042 12.00 1.8e-07
2026-10-14 01:21:28 TEN-KOH
NORAD 43677 		HAWK-9C
NORAD 59448 		1.991 11.98 7.4e-07
2026-10-14 08:01:30 TEN-KOH
NORAD 43677 		PETREL
NORAD 69503 		3.159 13.86 2.2e-07
2026-10-15 13:58:03 TEN-KOH
NORAD 43677 		FENGYUN 1C DEB
NORAD 30450 		3.931 15.05 1.0e-07
2026-10-16 00:25:52 TEN-KOH
NORAD 43677 		YAOGAN-30 09A
NORAD 48423 		4.278 12.35 1.5e-07
2026-10-16 23:01:08 TEN-KOH
NORAD 43677 		CZ-6A DEB
NORAD 61340 		4.155 13.70 1.4e-07
2026-10-17 08:32:48 TEN-KOH
NORAD 43677 		COSMOS 2251 DEB
NORAD 37496 		4.941 9.81 1.4e-07
2026-10-17 10:24:20 TEN-KOH
NORAD 43677 		PSLV R/B
NORAD 29713 		3.560 14.84 1.4e-07
2026-10-17 16:33:23 TEN-KOH
NORAD 43677 		H-2A R/B
NORAD 64695 		4.268 12.80 1.5e-07
2026-10-17 21:08:36 YAOGAN-30 02A
NORAD 42945 		TEN-KOH
NORAD 43677 		2.488 12.98 4.2e-07
2026-10-18 03:56:04 TEN-KOH
NORAD 43677 		TIANPING 2B
NORAD 52155 		3.342 14.69 1.6e-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