Sinus Honoris is located along the western edge of the Mare Tranquillitatis

Mare Tranquillitatis

Mare Tranquillitatis is a lunar mare that sits within the Tranquillitatis basin on the Moon. The mare material within the basin consists of basalt formed in the intermediate to young age group of the Upper Imbrian epoch. The surrounding mountains are thought to be of the Lower Imbrian epoch, but...

 located on the surface of the near side of the moon. The selenographic coordinates of this feature are 11.7° N, 18.1° E, and it has a diameter of 109 km.

Sinus Honoris has a wide mouth and is bordered by uneven terrain to the north and southwest. Where the bay joins the mare, rille

Rille

Rille is typically used to describe any of the long, narrow depressions in the lunar surface that resemble channels. Typically a rille can be up to several kilometers wide and hundreds of kilometers in length...

 systems extend to the north and south. The northern system is designated Rimae Maclear, after the crater Maclear

Maclear (crater)

Macleer is a lava-flooded crater on the northwest part of the Mare Tranquillitatis, a lunar mare in the eastern half of the Moon. The crater is located to the southeast of the slightly larger Ross...

 just to the east of the bay. At the southern end of the bay entrance is the Rimae Sosignes, named for the crater Sosigenes

Sosigenes (crater)

Sosigenes is a lunar impact crater on the west edge of Mare Tranquillitatis. It lies to the east of the large walled plain Julius Caesar. The crater rim has a high albedo, making it relatively bright. It has a small central rise at the mid-point of the floor....

to the south. At the west end of the bay is a finger of mare surface that extends to the northwest for almost 100 km.