On April 27, 2025, China successfully launched the Tianlian-2 (05) satellite from the Xichang Satellite Launch Center in Sichuan Province, enhancing its space data relay network.

This launch is significant as it marks China's 22nd orbital launch of the year, following closely on the heels of the April 24 launch of the Shenzhou-20 crewed spacecraft to the Tiangong space station.

The Tianlian-2 (05) satellite was launched aboard a Long March-3B carrier rocket at 11:54 p.m. Beijing Time, representing the 572nd flight of the Long March series.

After its launch, the satellite was placed into a geosynchronous transfer orbit, where it will eventually settle into a geostationary orbit approximately 35,786 kilometers above the equator.

As a second-generation geosynchronous orbit data-relay satellite, Tianlian-2 (05) is designed to provide telemetry, tracking, and command services for crewed spacecraft, including those operating at the Tiangong space station.

The satellite will also support medium and low Earth orbit satellites, enhancing China's capabilities in space exploration and operations.

Built on the DFH-4 platform, the newer Tianlian-2 satellites offer improved bandwidth and a lifespan of up to 15 years, surpassing the older DFH-3 platform used by the initial Tianlian-1 satellites.

The Tianlian series began with the launch of Tianlian-1 (01) in 2008, and earlier models have since been retired and positioned in graveyard orbits after completing their missions.

This launch follows the recent deployment of Tianlian-2 (04) and is part of China's broader strategy to enhance its space infrastructure, akin to the U.S. Tracking and Data Relay Satellite System (TDRSS).

While the China Aerospace Science and Technology Corporation (CASC) has not disclosed specific launch plans for 2025, it aims for approximately 100 launches, bolstered by increased commercial space activities and expanded launch facilities.

Looking ahead, the next anticipated launch is the Long March 5B rocket carrying a Yuanzheng-2 upper stage on April 28, 2025, with future plans potentially including a Tianwen-2 asteroid sample return mission.

In addition to its primary functions, Tianlian-2 (05) will also enhance tracking, telemetry, and command (TT&C) capabilities for future spacecraft launches.