* * * * * C/2013 A1 (Siding Spring) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2015 4 19.990 S 14.4 AQ 30.5T 179 0.4 2/ DIJ Burlage 2015 4 19.986 S 14.5 AQ 30.5T 179 0.4 4 BOU Burlage, Germany (Small, somewhat condensed object. Followed moving away from magn. 11.0 [AQ] star over 15-20m period.) 2014 11 29.37 S 10.4 TJ 40.0L 144 1.6 4 YOS Kita-karuizawa, Gunma (Extremely low, but bright. I could see it also with lower magnification [75x].) 2014 11 17.719 S 10.0:AQ 15.5L 29 3.5 5 DIJ Burlage (Comet altitude 8.3° with Sun at -15°.) 2014 11 17.40 M 9.8 TK 25.0L 39 1.8 6 WYA Walcha, NSW (Coma has diffuse edges, small faint stellar central condensation, slightly elongated to the SE. At 39x the outer coma enhances using Swan Band filter, at 83x the inner coma does not enhance. Low altitude 6.6°. Zodiacal light interference.) 2014 11 16.95 S 8.7 TK 10.0B 20 4 4 GOI Araçatuba (Nautical twilight. Comet altitude 11°, comparison stars near the same altitude.) 2014 11 12.41 M 9.6:TK 25.0L 39 2.5 5/ WYA Walcha, NSW (Central condensation dims using Swan Band filter at 83x, outer coma enhances using 39x. Low altitude 9.2°. Zodiacal light interference. Magnitude uncertain due to mag. 10.2 star [AQ] in coma, 0.5 from centre of coma.) 2014 11 8.40 M 10.7 AQ 25.0L 83 1.2 4/ WYA Walcha, NSW (No tail visible. Outer coma diffuse and transparent, gradually brightens to a small central condensation, not stellar. Does not appear to enhance using Swan Band filter. Zodiacal light and fading twilight. Low altitude 17.9°. Moon below Eastern horizon.) 2014 10 25.38 S 11.0 TJ 40.0L 144 1.5 5 YOS Kita-karuizawa, Gunma (It has passed near by Mars just one week ago. Well visible.) 2014 10 22.44 S 11.4 AQ 40.6L 76 1.3 4 CAM Warners Bay, NSW 2014 10 22.43 M 11.6 AQ 35.0T 71 1.2 3 1.3m 110 WYA Armidale, NSW (Close to mag 11.3 star, approximately 0.5 away to the SW. Faint transparent outer coma, inner coma slightly brighter but diffused.) 2014 10 21.44 S 11.5 AQ 40.6L 165 2 4 CAM Warners Bay, NSW 2014 10 21.42 M 11.4 AQ 25.0L 83 1.4 5/ 1.5m 110 WYA Walcha, NSW (Close to mag 11.7 star, approximately 1 away to the SW. Coma appears as a bright diffuse patch with a small and sometimes stellar central condensation. Using Swan Band filter the central condensation dims but the inner coma remains visible but not well enhanced.) 2014 12 19.44 M 11.2 AQ 25.0L 39 2.7 5 WYA Walcha, NSW (Coma appears elongated to ESE. Easily visible with glare of Mars in the same field of view. Diffuse outer coma with slight brighter centre, aqua-blue in colour, with a small stellar central condensation. Coma dims slightly using Swan Band filter although the very inner coma remains plainly visible. Observation was made with Mars moved out of field.) 2014 10 16.42 S 11.4 GA 25.4L 71 3 SEA Cowra, NSW 2014 10 16.42 M 11.0 AQ 25.0L 83 2.1 5/ 4m 130 WYA Walcha, NSW (Faint transparent tail, slightly curved. Coma resembles a soft nebulous glow and shows a small faint central condensation at times although brighter than the surrounding coma.) 2014 10 15.49 S 11.4 GA 25.4L 71 SEA Cowra, NSW 2014 10 15.42 M 11.6 AQ 25.0L 83 1.4 5/ 2.5m 130 WYA Walcha, NSW (Outer coma diffuse, inner coma brighter and elongated to SE. Small central condensation, appears faintly stellar in periods of good seeing. Coma close to faint star to the North. Does not enhance in Swan Band filter.) 2014 10 11.45 S 11.2 AQ 40.6L 165 1 4 CAM Warners Bay, NSW 2014 10 8.44 S 11.1 TK 10.0B 25 SEA Cowra, NSW 2014 10 8.44 S 11.1 TK 25.4L 71 3 4 SEA Cowra, NSW (Little difference with Swan Band filter. Oservations made during tonight's total lunar eclipse.) 2014 10 8.44 M 11.0 TK 25.0L 39 1.9 3 WYA Walcha, NSW (Moon in total eclipse. Coma shows a faint elongation to the SE, inner coma not condensed very well.) 2014 10 2.40 M 11.1 TK 25.0L 83 1 3/ WYA Walcha, NSW (Moonlight. Close to bright star. Coma diffuse with small and moderately condensed central condensation.) 2014 10 1.44 S 10.6 TK 40.6L 165 2 3 CAM Warners Bay, NSW 2014 10 1.39 M 11.5 TK 25.0L 83 0.8 3 WYA Walcha, NSW (Moonlight, elongation from Moon 21. Close to bright stars, crowded star field. Coma small and diffuse with slightly brighter and moderately condensed central condensation.) 2014 9 29.47 S 10.5 TK 40.6L 76 2 4/ CAM Warners Bay, NSW 2014 9 27.45 S 10.6 TK 40.6L 76 1.5 5 CAM Warners Bay, NSW 2014 9 23.52 S 10.9 TK 40.6L 76 1.5 4/ CAM Warners Bay, NSW 2014 9 23.41 M 10.3 TK 25.0L 39 2.8 6 3m 132 WYA Walcha, NSW (Coma very diffuse and even in brightness with small stellar central condensation. Small curved tail with convex side to the North. Coma dims using Swan Band filter. Crowded star field.) 2014 9 22.42 S 9.7 TK 20.3L 61 2 5 CAM Warners Bay, NSW 2014 9 22.42 S 10.0 TK 40.6L 76 1.5 6 CAM Warners Bay, NSW 2014 9 21.48 S 9.4 TK 40.6L 76 2 6 CAM Warners Bay, NSW 2014 9 20.41 S 9.5 TK 40.6L 76 2.5 6 CAM Warners Bay, NSW 2014 9 20.39 M 10.4 TK 25.0L 39 1.5 6 2m 90 WYA Walcha, NSW (Background stars in coma. Coma small with stellar central condensation. Tail slightly curved. Crowded star field. Enhances slightly in Swan Band filter.) 2014 9 18.41 M 9.4 TK 25.0L 39 3.7 4 8.5m 122 WYA Walcha, NSW (Background star in coma. Coma appears diffuse and transparent. Tail slightly curved to the SE, with convex side facing North.) 2014 9 17.52 S 9.8 AA 10.0B 25 SEA Cowra, NSW 2014 9 17.41 S 9.5 TK 40.6L 76 2 5/ CAM Warners Bay, NSW 2014 9 14.47 S 9.5 TK 40.6L 76 2 5/ CAM Warners Bay, NSW 2014 9 14.44 S 9.8 AA 10.0B 25 SEA Cowra, NSW 2014 9 13.51 S 9.4 TK 40.6L 76 3 5 CAM Warners Bay, NSW 2014 9 12.94 S 9.8 TK 22.0L 60 4 3 GOI Araçatuba 2014 9 12.42 S 9.7 AA 10.0B 25 SEA Cowra, NSW 2014 9 11.52 S 9.5 TK 40.6L 76 3 5 CAM Warners Bay, NSW 2014 9 11.41 M 9.9 TK 25.0L 39 4.2 5/ 6m 102 WYA Walcha, NSW (Coma evenly diffuse across much of the coma with small faint sometimes stellar centre. Tail is slightly fanned.) 2014 9 9.45 S 9.4 TK 40.6L 76 3 4 CAM Warners Bay, NSW 2014 9 6.30 S 9.6 TK 22.0L 60 4 3 GOI Araçatuba 2014 9 3.75 S 9.6 TK 40.6L 76 2.5 4/ 3m 340 CAM Warners Bay, NSW 2014 9 3.69 M 10.0 TK 25.0L 39 3.8 5/ 8.5m 41 WYA Walcha, NSW (Coma has faint edges gradually brightening to centre to a small, sometimes stellar, central condensation. Tail is fan-shaped. Does not enhance using Swan Band filter.) 2014 8 31.77 S 9.6 TK 40.6L 61 2 4/ 3m 340 CAM Warners Bay, NSW 2014 8 31.25 S 9.8 TK 22.0L 60 4 3 GOI Araçatuba 2014 8 30.31 S 9.8 TK 22.0L 60 4 3 GOI Araçatuba 2014 8 28.64 S 9.7 TK 40.6L 61 2.5 4 CAM Warners Bay, NSW 2014 8 23.21 S 10.0 TK 22.0L 60 3.5 4/ GOI Araçatuba 2014 8 19.19 S 10.0 TK 22.0L 60 3.5 4/ GOI Araçatuba 2014 8 17.78 S 9.8 TK 20.3L 61 4 4 CAM Warners Bay, NSW 2014 8 9.34 S 10.1 TK 22.0L 60 3 4 GOI Araçatuba 2014 8 8.79 S 9.9 TK 40.6L 76 4 5/ CAM Warners Bay, NSW 2014 8 6.79 S 10.1 AQ 40.6L 76 3 5 CAM Warners Bay, NSW 2014 8 6.75 M 10.1 AQ 25.0L 39 4.4 5/ WYA Walcha, NSW (Close to bright star. Coma elongated and slightly fanned to the West approximately. -5°C ambient temperature, clean clear skies.) 2014 8 5.75 M 10.3 AQ 25.0L 39 5 4/ WYA Walcha, NSW (Coma elongated to NW, evenly diffused with a small and slightly brighter central condensation. Close to bright stars. Dims slightly using Swan Band filter. Foggy conditions at ground level.) 2014 8 3.79 S 10.0 TK 20.3L 61 5 3/ CAM Warners Bay, NSW 2014 8 3.79 S 10.1 TK 40.6L 76 4.5 5 CAM Warners Bay, NSW 2014 8 2.29 S 10.6 TK 22.0L 60 3 4 GOI Araçatuba 2014 8 1.79 S 10.2 TJ 40.6L 76 4.5 5 CAM Warners Bay, NSW 2014 8 1.74 M 10.5 AQ 25.0L 39 5.6 5/ WYA Walcha, NSW (Coma dims slightly using Swan Band filter. A tapered, short and narrow tail-like feature to WSW and a slight hazy, transparent coma extension to the North.) 2014 7 31.79 S 10.3 TJ 40.6L 76 4 6 CAM Warners Bay, NSW 2014 7 30.79 S 10.4 TJ 40.6L 76 3.5 4/ CAM Warners Bay, NSW 2014 7 30.73 M 10.4 AQ 25.0L 39 4 5/ WYA Walcha, NSW (Coma elongated to WSW approximately. Background star in coma. Faint and short transparent extension to NE. Small central condensation gradually fades to edges, inner third of coma more opaque whereas the outer two thirds is more transparent.) 2014 7 29.79 S 10.5 TJ 20.3L 61 4 3/ CAM Warners Bay, NSW 2014 7 29.72 M 10.5 AQ 25.0L 39 4.9 5/ WYA Walcha, NSW (Coma appears elongated to WSW and a tapered extension of the coma to the NE although faint. Inner coma opaque and bright and wedge shaped portion in direction of coma elongation, with a small central condensation, sometimes appearing stellar but faint. Inner coma enhances slightly using Swan Band filter. Outer coma does not enhance.) 2014 7 29.23 S 10.8 TK 22.0L 60 3 3 GOI Araçatuba 2014 7 28.72 M 10.8 TK 25.0L 83 3.3 5 WYA Walcha, NSW (Coma appears elongated NE-SW, outer coma diffuse with small central condensation, not quite stellar. Coma slightly enhances in Swan Band filter. Nearby bright galaxies in field.) 2014 7 26.77 S 10.8 TJ 40.6L 76 3 3/ CAM Warners Bay, NSW 2014 7 24.78 S 10.9 TJ 40.6L 76 2 3 CAM Warners Bay, NSW 2014 7 22.77 S 10.8 TJ 20.3L 61 2.5 3 CAM Warners Bay, NSW 2014 7 8.79 S 11.3 TJ 20.3L 61 2 3 CAM Warners Bay, NSW 2014 7 6.78 S 11.4 TJ 20.3L 61 2 3/ CAM Warners Bay, NSW 2014 7 6.32 S 11.3 AU 22.0L 160 1.5 4 GOI Araçatuba 2014 7 5.80 S 11.5 TJ 20.3L 61 2 3/ CAM Warners Bay, NSW 2014 7 3.81 S 11.5 TJ 20.3L 61 2 2/ CAM Warners Bay, NSW 2014 7 3.75 S 11.6 AQ 25.0L 39 3 4 WYA Walcha, NSW (Coma largely diffused and elongated to SSW, with small moderately condensed centre. At 83x the central condensation is more pronounced and sometimes appears stellar in periods of good seeing.) 2014 7 2.82 S 11.9 TK 20.0L 133 1 4/ MAT Swan Hill, VIC (Small but moderately condensed.) 2014 7 2.81 S 11.6 TJ 40.6L 165 2 2/ CAM Warners Bay, NSW 2014 7 2.70 S 12.0 AQ 25.0L 83 2.5 3/ WYA Walcha, NSW (Coma elongated to the South approximately. Small central condensation, moderately condensed. Almost disappears when applying Swan Band filter.) 2014 7 1.79 S 11.5 TJ 20.3L 133 2 2 CAM Warners Bay, NSW 2014 7 1.70 S 11.9 AQ 25.0L 83 1.6 2 WYA Walcha, NSW (Coma appears fanned in shape to the South approximately. Slightly brighter inner coma, weakly condensed and fading to a transparent outer coma. Fog interference, obs made during breaks. Low altitude = 18°.) 2014 6 30.81 S 11.5 TJ 20.3L 133 2 3/ CAM Warners Bay, NSW 2014 6 28.35 S 11.6 AU 22.0L 160 1.5 4 GOI Araçatuba 2014 6 26.73 S 12.2 AQ 25.0L 39 1.7 2/ WYA Walcha, NSW (Coma slightly elongated to SSW, does not enhance in Swan Band filter. Very faint stellaring of central condensation at 83x in good seeing.) 2014 6 25.81 S 11.4 TJ 40.6L 76 2 2 CAM Warners Bay, NSW 2014 5 28.78 S 12.9 AQ 25.0L 83 1 3 WYA Walcha, NSW (Coma appears slightly elongated to the South. Central condensation slightly condensed but quite noticeable in periods of good seeing. Low altitude = 14.3°.) 2014 2 24.49 S 14.1 AQ 25.0L 83 1.2 2/ WYA Walcha, NSW (Coma shows diffuse edges with slightly brighter centre but weakly condensed. Visible in periods of good seeing. Altitude 20°.) 2014 2 3.49 S 14.3 AQ 25.0L 83 0.7 2/ WYA Walcha, NSW (Coma sometimes appears to be elongated to SSE, visible in periods of good seeing. Outer coma is even in brightness but very tenuous with small central brightening.) 2014 1 30.45 S 14.4 AQ 25.0L 83 0.5 2/ WYA Walcha, NSW (Difficult to see but shows up well in periods of good seeing. Coma appears diffuse but with a slightly brighter inner coma, weakly condensed. Naked Eye limiting magnitude in vicinity of the comet is +6.6.) 2014 1 29.45 S 14.3 AQ 25.0L 83 0.5 2/ WYA Walcha, NSW (Coma very small and diffuse with slightly brighter central condensation. Visible in periods of good seeing.) 2014 1 28.48 S 14.4 AQ 25.0L 83 0.6 1/ WYA Walcha, NSW (Coma very small and diffuse. Visible in periods of good seeing; magn. 15 stars nearby were easily visible but lost in scintillation sometimes. Observed over a 30 minute period.)