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Track YAOGAN-30 B now!
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YAOGAN-30 B is classified as:

NORAD ID: 42946
Int'l Code: 2017-058B
Perigee: 604.6 km
Apogee: 608.8 km
Inclination: 35.0 °
Period: 96.7 minutes
Semi major axis: 6977 km
RCS: Unknown
Launch date: September 29, 2017
Source: People's Republic of China (PRC)
Launch site: Xichang Space Center, China (XSC)

YAOGAN-30 B is part of a Yaogan-30 (01) Chinese triplet satellite launched on September 29, 2017. According to the official launch announcement, the Yaogan-30 (01) satellites were developed by the Chinese Academy of Sciences to create a multi-satellite system for electromagnetic environment detection which could be interpreted as a science-driven mission, though intelligence-gathering in the electromagnetic spectrum could also fall within the realm. Even if operating from a lower inclination than the typical Yaogan trios, the satellites could still cover the majority of Earth's marine traffic routes, if ship-tracking and characterization is indeed their role.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 42946U 17058B   18081.90693854 +.00000254 +00000-0 +28998-4 0  9999
2 42946 035.0002 085.5623 0002981 316.1568 043.8900 14.89481717026075
Source of the keplerian elements: AFSPC