(523671) 2013 FZ27 (provisional designation 2013 FZ27) is a trans-Neptunian object located in the Kuiper belt in the outermost region of the Solar System, approximately 570 kilometers (350 miles) in diameter.
[4] Taking the mean of the two magnitudes, and using the standard 0.25 ~ 0.05 range for minor planets of unknown albedo, a wide 335 to 748 km spread can be estimated for the diameter.
[3] The object was first announced on 2 April 2014, when American astronomers Scott Sheppard and Chad Trujillo at the CTIO in Chile published their observations in a Minor Planet Electronic Circular.
[1] The Pan-STARRS-1 survey at the Haleakala Observatory, Hawaii, in the United States also found precovery observations of 2013 FZ27 after 2013 FZ27 was announced and reported them to the Minor Planet Center at a later date.
[3] According to Michael Brown and the Johnston's archive, 2013 FZ27 measures 561 and 584 kilometers in diameter, based on an absolute magnitude of 4.6 and 4.4[a] respectively.