The Johns Hopkins University Energetics Research Group (ERG), compiles a log of orbital launch attempts yearly. This log includes the launch vehicle, pad, and payload of each launch attempt. Successful as well as failed launches are included so long as they are considered a legitimate attempt, development launches for example may be excluded, especially if they carry no payload or a dummy payload. The launch needs to be orbital, sub-orbital & ballistic trajectories are not counted.

The data contained in this launch log is pulled from various sources, listed below. The data contained herein are provided for technical reference only, and are not to be construed as official documentation. ERG makes every effort to ensure the reliability of the data; however, no warrant, expressed or implied, is to be construed as to the accuracy or completeness of the information presented. Neither the U.S. Government, The Johns Hopkins University, Energetics Research Group, nor any person acting on their behalf assumes any liability resulting from the use or publication of any of the information and data contained in this launch log. The ERG and The Johns Hopkins University assumes no responsibility for its use, and reserves the right to revise this document without notice.

If you believe there is an error in the launch log please contact Nick Keim, nkeim@erg.jhu.edu