H-IIA and Falcon 9 – two rockets will launch 61 seconds apart
December 23rd can be an interesting day for rocket launch enthusiasts. The launch of the Japanese H-IIA and SpaceX's Falcon 9 rockets is scheduled for this day. It wouldn't have been anything unusual if it wasn't for the fact that both launches can be separated by just 61 seconds.
The first one, at 01:26:22 UTC will be H-II rocket launching from Tanegashima Space Center. It will carry two satellites into space - the Global Change Observation Mission (GCOM-C1) and the Super Low Altitude Test Satellite (SLATS). The first one, GCOM-C1, will study climate change on our planet. The satellite will be able to create a complete picture of the Earth every 2-3 days. The Second-generation Global Imager (SGLI) will provide the possibility to collect data on, among other things, the circulation of water in nature and to investigate clouds and aerosols contained in the atmosphere. The satellite has a mass of approximately 2000 kg. The second satellite, SLATS, is to explore the possibility of operating in a very low Earth orbit (LEO), at an altitude of less than 200 km above the Earth's surface. It will be released together with the GCOM-C1 at an altitude of more than 600 km, after which it will be lowered to its final orbit (