58P5H1V1 is an unnamed c/5 diagonal spaceship discovered by Matthias Merzenich on September 5, 2010. In terms of its minimum population of 58 cells it is the smallest known c/5 diagonal spaceship. It provides sparks at its trailing edge which can perturb gliders, and this property was used to create the first c/5 diagonal puffers. These sparks also allow the attachment of tagalongs which was used to create the first c/5 diagonal wickstretcher in January 2011. A period-1540 glide-symmetric three-ship puffer was discovered by Peter Naszvadi in March 2020.
The final step for a glider synthesis of this spaceship was found by Goldtiger997 and Tanner Jacobi on April 2, 2020. Goldtiger997 posted a complete 220-glider synthesis, including the base still life, on the next day, making 58P5H1V1 the first spaceship of its speed to be synthesized. Reductions to the synthesis have since been made.
the first c/5 diagonal puffer to be discoveredDownload RLE: click here
the first c/5 diagonal wickstretcher to be discoveredRLE: here