* * * * * 141P/Machholz 2-A * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2015 9 21.81 S 11.8 TA 40.0L 144 1.1 1 YOS Kita-karuizawa, Gunma (The sky became cloudy temporarily, but it became fine rapidly while the sky was getting brighter. So I could see the comet. It was located near Venus, so I also enjoyed the large Moon-like Venus.) 2015 8 28.17 S 11.2 TK 20.3T 100 2.5 2 GON Cea, León (Observed after moonset. Zodiacal light. Start of astronomical twilight. Altitude 23°.)
2005 4 5.44 S 11.1 TJ 40.0L 144 2.0 1 YOS Ibaraki, Japan (Faint and widely diffused, but actually visible. Maybe my estimation of the size is too large, and the magnitude is too bright, comparing to the recent observations by others.) 2005 3 31.833 S 12.1 AU 31.0J 109 0.7 1/ DIJ Lauwersoog 2005 3 31.828 S 12.4 AU 31.0J 109 1.2 2 BOU Lauwersoog (Faint, but definitely seen as a diffuse glow in excellent sky with some interference from twilight and zodiacal light. Comet's altitude was 13 degrees.) 2005 3 11.83 S 11.7 TK 20.3T 77 0.8 2 GON Camposagrado, León (Mountain location. Zodiacal light. Comet's altitude 10 deg.) 2005 3 8.41 S[ 9.1 TJ 40.0L 144 !1.4 YOS Ibaraki, Japan (I tried to see it, but failed. It was not clear in the evening very low sky, so the limiting magnitude was not deep. The position was calculated from the orbital elements with the perihelion passage at Feb. 28.22 UT, based on the recent images by Michael Jäger.)