Shi Jian 17 beside Zhongxing 1C

A satellite of China Satellite Communications Corp. Group (China Satcom) came up beside a satellite of General Armaments Dept. of the PLA, 1.5 km away at the nearest its sources state.

Reported: 1 public report other than Orbinauts names these two.

From the public record

From
Jul 24, 2018
to Aug 17, 2018
Closest stated
1.5 km
Jul 29, 2018
Orbit
GEO
geostationary orbit, over 80.5° E

The one that moved

Shi Jian 17

China Satellite Communications Corp. Group (China Satcom), CN

41838 · 2016-065A · launched Nov 3, 2016

The one it came up to

Zhongxing 1C

General Armaments Dept. of the PLA, CN

41103 · 2015-073A · launched Dec 9, 2015

What the sources state

Every day and distance here is the sources’ own, to the precision they state.

When
Jul 24, 2018 to Aug 17, 2018
BesideJul 24, 2018
CSIS: held orbit near Chinasat 1C 24 Jul to 16 Aug 2018
Closest statedJul 29, 2018
SJ-17 rendezvoused with Chinasat 1C, coming within 1.5 km on July 29
LeftAug 16, 2018 to Aug 17, 2018
SJ-17 remained with Chinasat 1C until August prior to departing

The detector was not yet running: it reads low Earth orbit since April 2026 and the geostationary belt since October 2026.

Reported elsewhere

Who else said these two were together, earliest first.