* * * * * C/2012 L2 (LINEAR) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2013 7 3.35 S 11.5 AQ 25.0L 83 1.9 2 WYA Walcha, NSW (Coma very diffuse, low altitude [6°]. Slight interference by fading twilight and zodiacal light.) 2013 6 3.35 S 10.4 TK 25.0L 39 3.3 1/ WYA Walcha, NSW (Coma appears circular, diffuse inner coma, enhances using Swan Band filter, no tail.) 2013 5 19.35 S 10.5 TA 25.0L 83 1.4 1/ WYA Walcha, NSW (Moonlight, coma very diffuse.) 2013 5 13.93 S 8.9 TK 10.0B 20 5 2 GOI Araçatuba (Moonlight interference, clouds.) 2013 5 11.93 S 8.7 TK 10.0B 20 5 3 GOI Araçatuba 2013 5 9.36 S 9.6 TK 25.0L 39 3.9 2 WYA Walcha, NSW (No tail. Coma shows faint elongation to SW, weakly brightens to centre. Swan Band filter enhances coma slightly.) 2013 5 7.36 S 9.9 TK 25.0L 39 3.7 2/ WYA Walcha, NSW (No tail. Coma edges diffuse and gradually brightens weakly to centre, Swan Band filter enhances inner half of coma.) 2013 5 3.88 S 8.5:TK 20.3T 77 7 3 GON Puerto de Aralla, León (Brighter than expected. Diffuse wide coma. End of astronomical twilight. Very low altitude: 3°. Mountain location, clear sky down to the horizon.) 2013 5 1.36 S 9.8 TK 25.0L 39 3.8 3 WYA Walcha, NSW (Low altitude. Coma has very diffuse edges and a broad, weakly graduating patch of light to the centre. The inner 2/3rds of the coma enhances slightly using Swan Band filter. No tail, coma appears circular.) 2013 4 18.36 S 10.0 TA 25.0L 39 2.7 2 WYA Walcha, NSW (Moonlight. No tail, coma shows diffuse edges with slight brightening to centre. Enhances slightly using Swan Band filter and shows the coma diameter to 3.5.) 2013 4 13.83 S 11.0:AQ 32.6L 182 2 3 GUZ Dosłońce (Only faintly seen. Altitude 10 deg. Some light pollution from distant town and nearby 3 days old Moon.) 2013 4 10.94 S 10.4 TK 22.0L 160 2.5 2 GOI Araçatuba 2013 4 2.831 S 10.6 AQ 25.4J 58 2.5 3 BOU Sint Annen 2013 4 2.830 S 10.6 AQ 15.5L 42 3 3/ DIJ Burlage 2013 4 2.39 S 11.0 GA 25.4L 71 3 SEA Cowra, NSW (No obvious change using Swan Band filter. Low elevation and twilight.) 2013 4 1.828 S 10.5 AQ 25.4J 58 2.5 3/ BOU Sint Annen (Star of magn. 12.4 [TA] near edge of coma.) 2013 3 31.85 S 10.5 TK 10.0R 40 2.5 2/ GRA Hakadal (Challenging observation due the comet's faintness and location close to a mag. 11 star. Dark sky.) 2013 3 30.94 S 10.8 AU 22.0L 160 1.5 3 GOI Araçatuba 2013 3 30.89 S 10.4 TK 8.0R 40 3 2/ GRA Hakadal (Very faint but seen at correct location, about 2 deg. SE of Pleiades. Fairly low [alt. 14°] but in a dark sky. Comet also weakly detected on images using a tripod-mounted DSLR [Canon EOS 5D MarkII] and a 100mm f/2 lens.) 2013 3 30.88 S 10.5 TK 20.3T 77 3 3 GON Granja de Moreruela, Zamora 2013 3 29.95 S 10.8 AU 22.0L 160 1.5 3 GOI Araçatuba (No or little image enhancement with comet filter use.) 2013 3 12.821 S 10.6 AQ 25.4J 58 2.5 3 BOU Sint Annen 2013 3 5.794 S 10.8 AQ 25.4J 58 3 3 BOU Sint Annen 2013 3 4.889 S 11.0 AQ 15.5L 42 2.4 3 DIJ Burlage 2013 3 4.794 S 10.7 AQ 25.4J 58 3 2/ BOU Sint Annen 2013 3 3.806 S 10.7 AQ 25.4J 58 3.5 2/ BOU Sint Annen 2013 3 1.83 S 10.3 TK 20.3T 77 4 2/ GON Piedrafita de Babia, León (Diffuse coma elongated towards p.a. 50 deg.) 2013 2 8.86 S 11.3 TK 20.3T 100 1.8 3/ GON Pandorado, León 2013 1 15.900 S 13.0 TA 25.4J 117 1.0 3/ BOU Sint Annen 2013 1 3.87 S 11.8 TK 20.3T 133 1.8 3/ GON Aralla, León 2012 12 7.931 S 13.8 TA 30.5T 145 0.6 2 DIJ Burlage 2012 12 7.926 S 14.0 TA 30.5T 145 1.0 3 BOU Burlage, Germany (Field checked in DSS. Faint, diffuse object.) 2012 11 6.83 I 14.7 HN 20.3T 133 0.3 7 GON Pandorado, León (Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near Z UMi. Mountain location, very clear sky.)