Cathey Peak is a peak in the Sacramento Mountains, in the south-central part of the U.S. State of New Mexico. It lies in Otero County, 10 mi southeast of the community of Alamogordo. Sacramento Peak, at 9262 ft, is a nearby subpeak of Cathey Peak, and is more widely known due to the presence of several observatories on or near its summit. It is located at 32.78787°N, -105.82081°W, 1.6 mi southwest of Cathey Peak, and has a topographic prominence of approximately 80 ft. The Sunspot Solar Observatory is on the summit itself, and the site of this observatory incorporates the small town of Sunspot, less than one-half mile (0.8 km) to the northeast. The Apache Point Observatory is located on a promontory about one-half mile (0.8 km) south of the summit. Both peaks lie on the high western crest of the Sacramento Mountains, and hence have gentle, forested eastern slopes, and a steep, high escarpment to the west, descending to the Tularosa Basin. Both peaks can be accessed using New Mexico Scenic Byway 6563 from Cloudcroft.