The Everly Brothers rock groups of the 1960s. The Beatles, The Beach Boys, and Simon & Garfunkel developed their early styles by performing Everly songs. The Bee Gees, The Hollies, The Marmalade, and other rock and roll groups that feature harmony singing were also influenced by the Everlys. The music of the Everly Brothers influenced the Beatles, who referred to themselves as "the English Everly Brothers" when Paul McCartney and John Lennon went hitchhiking south to win a talent competition. They based the vocal arrangement of "Please Please Me" on "Cathy's Clown." Keith Richards called Don Everly "one of the finest rhythm players."
P/2011 NO1 (Elenin) perihelion passage to be around January 2024. An observation arc of 30 days would allow a better refinement to the orbit of this comet. P/2011 NO1 was the second comet discovered by Leonid Elenin. The first comet discovered by Elenin was comet C/2010 X1. Both comets were discovered with the aid of the automatic detection program CoLiTec. On 29 January 2013 the Minor Planet Center awarded Leonid Elenin a 2012 Edgar Wilson Award for the discovery of comets by amateurs. P/2011 NO1 (Elenin) P/ (Elenin) is a periodic comet with a preliminary orbital period estimated at 13 ± 0.16 years.