Solar System in 1986 and will next appear in mid-2061. Officially designated 1P/Halley, it is also commonly called Comet Halley, or sometimes simply Halley
"The rotationperiod of Nereid". Monthly Notices of the Royal Astronomical Society. 250: 1P–2P. Bibcode:1991MNRAS.250P...1W. doi:10.1093/mnras/250.1.1p. Jones
rotationperiod of 18.127 ± 0.002 hours and varies in brightness by 0.22 ± 0.02 in magnitude. However, according to Shrindan E. (2009) the rotation period
S/2004 S 4, and R/2004 S 1". IAU Circular. 8401: 1. Bibcode:2004IAUC.8401....1P. Retrieved 2011-12-30. Lakdawalla, Emily (June 13, 2007). "Funny little Atlas"