* * * * * C/2011 R1 (McNaught) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2013 5 5.958 S 13.3 AQ 30.5T 102 1.5 1 BOU Burlage, Germany 2013 5 5.955 S 13.5 AQ 30.5T 102 1.7 0/ DIJ Burlage 2013 4 30.953 S 13.3 AQ 30.5T 102 1.6 1 BOU Burlage, Germany (Fairly large, very diffuse object.) 2013 4 30.950 S 13.5 AQ 30.5T 102 1.5 1/ DIJ Burlage 2013 4 7.74 S[13.0 TA 40.0L 144 !1.6 YOS Mt. Tsukuba, Ibaraki (Maybe a diffuse comet with DC=2 was visible. But I am not sure.) 2013 3 9.28 S 12.3 AU 22.0L 160 1 4 GOI Araçatuba 2013 2 15.81 S 12.6 AU 40.0L 144 1.1 3 YOS Mt. Tsukuba, Ibaraki (Difficult to see because locating near by a pair of double stars, but I could see the comet.) 2013 2 9.22 S 11.5 TK 20.3T 77 2.0 3 GON Ferreruela de Tabara, Zamora 2013 1 20.25 S 11.2 TK 20.3T 100 2.0 2 GON Perilla de Castro, Zamora (Altitude: 10°.) 2012 10 8.42 S 11.8 GA 25.4L 71 SEA Cowra, NSW (Very vague and diffuse object of low surface brightness.) 2012 7 28.33 S 11.3 AU 22.0L 160 1.5 3 GOI Araçatuba 2012 7 21.33 S 11.3 TK 22.0L 160 2 3 GOI Araçatuba 2012 7 16.76 M 11.9 TK 25.0L 39 2 4/ WYA Walcha, NSW (No tail, small central condensation, almost stellar. Uniform brightness across coma, enhances moderately with Swan Band filter.) 2012 6 30.35 S 11.8 AU 22.0L 160 1 4 GOI Araçatuba 2012 6 24.75 S 12.4 AQ 25.0L 39 2 4 WYA Walcha, NSW (No tail, central condensation appears tight but diffuse.) 2012 6 19.76 S 12.5 AQ 25.0L 39 1.6 5/ WYA Walcha, NSW (No tail, inner coma brighter than the edges, Swan band filter enhances inner coma slightly, central condensation almost stellar.) 2012 6 18.76 S 12.1 AQ 25.0L 39 1.8 2/ WYA Walcha, NSW (No tail, coma best visible using averted vision.) 2012 6 15.73 S 12.0 AQ 25.0L 39 2.5 3/ WYA Walcha, NSW (No tail, does not enhance with Swan Band filter.) 2012 6 14.75 S 12.3 AQ 25.0L 83 2 3 WYA Walcha, NSW