All data compiled are in NetCDF format. These include variables gathered from multiple data sources and cross-checked to obtain activity data needed to calculate air pollutant and carbon dioxide (CO2) emissions from rocket launches and object re-entries for 2020-2022. There are 4 types of data generated and provided in NetCDF files summarised below. A detailed description of data acquisition and cross-checking, the approach adopted to calculate mapped vertically resolved emissions, the emissions data validation, and a description of each of the variables in the files provided is in the Nature Scientific Data paper submitted for review.(1) Compiled and cross-checked launch activity data in launch_activity_data_2020-2022.nc.(2) Compiled and cross-checked relevant information and characteristics of each rocket launched from 2020 to 2022 in rocket_attributes_2020-2022.nc.(3) Compiled and cross-checked details of each re-entering object from 2020 to 2022 in reentry_activity_data_2020-2022.nc.(4) Compressed (*.tar.gz) files of 4 folders hosting the emissions. The 4 folders separate emissions into the different vertical and horizontal resolutions on which the emissions are gridded. The compressed files unzip from 50 GB each and 606 GB total. The uncompressed files are daily files of hourly 3D gridded air pollutant and carbon dioxide (CO2) emissions provided for direct input to GEOS-Chem or other models with emissions processing packages that regrid the emissions to the model grid. Emissions files are categorised as associated with all mission types, with non-megaconstellation (nonsmc) missions only or megaconstellation (smc) missions only or all (all) missions and are provided as daily files with the filename convention "byproduct_emis_{mission_type}{horiz_res}{vert_res}_YYYYMMDD.nc4". There are 12 sets of daily files for 2020-2022, where { } are used as placeholders for "all", "nonsmc" or "smc" for {mission_type}, "4x5" for 4o latitude x 5o longitude or "2x25" for 2o latitude x 2.5o longitude for {horiz_res}, "47" for 47 layers up to 0.01 hPa (~80 km) or "72" for 72 layers up to the same altitude for {vert_res}.Code written in Python used to develop the emission inventory and to generate the NetCDF files is on Zenodo at https://zenodo.org/doi/10.5281/zenodo.13136856.