Issue 103

China Launches Yaogan-43 01 Satellites

16 Aug: China launched a Long March-4B with the first group of Yaogan-43 remote sensing satellites (YG-43 01) from Xichang. Official sources stated the satellites entered the preset orbit and will be “mainly used for carrying out tests on new technologies of low-orbit constellations”. Launch Video . - This was the…

16 Aug: China launched a Long March-4B with the first group of Yaogan-43 remote sensing satellites (YG-43 01) from Xichang. Official sources stated the satellites entered the preset orbit and will be “mainly used for carrying out tests on new technologies of low-orbit constellations”. Launch Video.

– This was the first LM-4B launch with a 4.2m fairing (typical is 3.7m.)

Initial observations indicate there are 9 satellites and 1 upperstage/rocket body on orbit. There are currently only 8 satellites in the spacetrack.org catalog and all are in a ~503x495km orbit with an inclination of 35°. As of 17 Aug the satellites were not in any discernable formation.

– We will likely see another satellite added to the catalog in the near future.The mission patch displays 9 stars and the launch video displays an animation showing 2 rows of 4 satellites with another satellite on top. (4×2)+1 = 9.

– YG-43 01’s orbital profile is nearly identical to the 47 YG-35/36/39/42 satellites that China launched over the past 3 years. However, due to a RAAN offset, the YG-43 01 cluster is not co-planar with any of the previously launched YG-35/36/39/42 spacecraft.

From 2017-21 China also launched 30 YG-30 satellites into a 35° inclined orbit and at 585x580km altitude. The YG-43 01 cluster is not co-planar with any of these satellites.

– Open source reports indicate CAST, SAST, IAM CAS, and MonoSpace contributed to YG-43 01. We do not know if this refers to individual satellites or components or a mixture of both. Minospace and IAMCAS specialize in small, networked satellites.