* * * 45P/Honda-Mrkos-Pajdušáková * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2017 3 22.61 S 13.6 AU 40.0L 144 1.0 0 YOS Mt. Hanadate, Ibaraki (Now it becomes very faint. It was overlapping on a 14-mag star at first, so I waited for some time. But maybe my observation was influenced by the star.) 2017 3 21.857 S 12.8 AQ 30.5T 102 1.8 1 BOU Burlage, Germany (Very faint and diffuse object. Visibility probably somewhat enhanced by presence of magn. 14.6 star in coma.) 2017 3 21.848 S 12.9 AQ 30.5T 102 1.6 1 DIJ Burlage 2017 3 20.05 S 11.0 AQ 20.3T 77 3 1/ GON Puerto de Aralla, León (Very faint and diffuse elongated coma. Field stars checked in DSS.) 2017 3 8.68 S 10.5 TK 25.0L 39 5.5 2 WYA Walcha, NSW (Coma very large. Transparent outer coma, diffuse but slightly brighter inner coma. Faint elongation to the SE approximately. Observation ended by cloud.) 2017 3 3.73 S 10.7 TJ 40.0L 36 6 0/ YOS Mt. Hanadate, Ibaraki (Bright, but completely diffuse with no central condensation.) 2017 3 2.14 S 8.2 TK 10.0B 20 12 2 GOI Araçatuba 2017 2 28.933 S 8.9 TK 8.0B 15 12 0/ DIJ Burlage 2017 2 28.92 S 10.2 TK 20.0L 42 & 7 1/ SCH Eerbeek 2017 2 28.86 S 8.2 TK 10.0B 25 8 2 GON Collada Pandenes - Cabranes, Asturias 2017 2 24.91 S 9.0 TK 8.0B 15 & 8 2 SCH Bussloo (Difficult observation. Comet only visible with averted vision.) 2017 2 24.91 S 7.8 TK 5.0B 10 12 2 1.2 290 GON Villasecino, León 2017 2 24.883 S 8.3 TK 8.0B 15 14 1 DIJ Burlage 2017 2 24.883 S 8.8 TK 8.0B 15 12 0/ BOU Burlage, Germany 2017 2 23.64 S 8.0 TK 5.0B 7 22 1 WYA Walcha, NSW (Very diffuse, coma elongated to WNW approximately. Enhances slightly in Swan Band filter.) 2017 2 22.85 S 7.7 TK 5.0B 10 12 2 0.7 290 GON Alto de la Colladona, Asturias (Fanned dust tail spanning from p.a. 270 deg. to 290 deg.) 2017 2 22.19 S 8.6 TK 10.0B 20 10 2 GOI Araçatuba 2017 2 21.778 S 8.0 TK 8.0B 15 11 1 DIJ Burlage 2017 2 21.22 S 7.8 TK 5.0B 10 12 2 GON Alto de la Camperona, León 2017 2 20.57 S 7.6 TK 5.0B 7 15 2 WYA Walcha, NSW (Enhances in Swan Band filter. Coma slightly elongated to the West approximately.) 2017 2 18.97 S 8.2 TK 8.0B 15 &15 0 SCH Eerbeek (Very big and diffuse. Difficult observation. Elongated coma in p.a. 315 deg.?) 2017 2 18.875 S 7.7 TK 8.0B 15 22 1 DIJ Burlage 2017 2 16.97 S 7.9 TK 10.0B 25 12 2 GON Alto de la Camperona, León (Elongated coma.) 2017 2 16.96 S 7.5 TK 5.0B 10 15 2 GON Alto de la Camperona, León 2017 2 14.875 S 8.4 TK 8.0B 15 6 0/ DIJ Burlage 2017 2 8.24 S 6.7 TK 4.0R 6 22 2 GON Cea, León 2017 2 6.83 S 6.9 TJ 7.0R 10 16 2 YOS Mt. Hanadate, Ibaraki (Very bright and easy to see with a small monocular. Diffuse and very large.) 2017 2 6.82 S 7.9 TJ 40.0L 36 11 1 YOS Mt. Hanadate, Ibaraki 2017 1 6.77 M 6.5 TK 5.0B 10 3 6/ GON Collada de la Cobertoria, Asturias (Altitude 9°. Comparison stars at the same low altitude as the comet. Moonlight interference.) 2017 1 6.76 M 6.6 TK 10.0B 25 3 6 GON Collada de la Cobertoria, Asturias 2017 1 5.722 S 7.0 TK 10.0B 14 2 7 LOO Genk (Moonlight. Altitude 7.5°.) 2017 1 3.77 M 6.8 TK 5.0B 10 2.5 7 GON Linares - Proaza, Asturias (Altitude 9°. Comparison stars at the same low altitude as the comet. Some moonlight interference.) 2017 1 3.76 M 6.9 TK 10.0B 25 2.5 6 GON Linares - Proaza, Asturias 2016 12 31.77 M 6.9 TK 5.0B 10 2.5 7 GON Linares - Proaza, Asturias (Altitude 10°. Comparison stars at the same low altitude as the comet. Zodiacal light.) 2016 12 31.45 S 7.2 AA 10.0B 25 SEA Cowra, NSW 2016 12 30.77 M 7.0 TK 5.0B 10 2.5 7 GON Collado del Fresno - Sierra del Aramo, Asturias (Altitude 10°. Comparison stars at the same low altitude as the comet. Zodiacal light.) 2016 12 30.723 S 7.5 TK 10.0B 14 2 7 LOO Peer 2016 12 30.43 M 7.2 TK 25.0L 39 2.2 5/ 0.23 85 WYA Walcha, NSW (Low altitude 7.7°. Enhances well in Swan Band filter. Faint tail. Faint outer coma, brightening to an opaque inner coma, aqua-blue in colour with a small stellar central condensation. Slight interference by twilight.) 2016 12 29.96 M 7.2 TK 10.0B 20 5 5/ 0.1 75 GOI Araçatuba (Nautical twilight. sun altitude -12°, comet altitude 15°.) 2016 12 29.77 M 7.1 TK 5.0B 10 2.5 7 GON Salcedo - Sierra del Aramo, Asturias (Altitude 10°. Comparison stars at the same low altitude as the comet. Zodiacal light.) 2016 12 29.72 S 7.1 TK 12.5B 30 2 7 DeS Beert 2016 12 29.710 M 7.2 TK 15.6L 36 3.2 7 BOU Nieuwklap (Twilight, comet at 7.0° altitude with Sun at -13.5°.) 2016 12 29.710 M 7.3 TK 8.0B 15 3 6/ DIJ Burlage (Comet at 6.5° altitude.) 2016 12 29.43 M 7.4 TK 25.0L 39 2.2 5/ 0.24 79 WYA Walcha, NSW (Low altitude 6.7°. Faint tail visible, just above background threshold. Faint stellar central condensation visible in good seeing, opaque inner coma, aqua-blue in colour. Enhances well in Swan Band filter.) 2016 12 28.77 M 7.2 TK 5.0B 10 3 7 GON Gamoniteiro - Sierra del Aramo, Asturias (Altitude 10°. Comparison stars at the same low altitude as the comet. Zodiacal light.) 2016 12 28.76 M 7.5 TK 10.0B 25 3 6/ GON Gamoniteiro - Sierra del Aramo, Asturias 2016 12 27.72 I 7.6 TK 8.0B 15 3 7 DeS Beert 2016 12 27.43 M 7.5 TK 25.0L 39 2 6 WYA Walcha, NSW (Outer coma diffuse, brightening to a well condensed centre, aqua-blue in colour. Enhances strongly in Swan Band filter. Faint tail traced to 13 in p.a. 78 de. approximately. Low altitude 7.3°, slight interference by zodiacal light.) 2016 12 26.96 S 7.3 TK 5.0B 7 3 4/ GOI Araçatuba (Nautical twilight, sun altitude -12°, comet altitude 17°.) 2016 12 26.77 M 7.3 TK 5.0B 10 4 6/ GON Alto del Castro, León (Altitude 9°. Comparison stars at the same low altitude as the comet. Zodiacal light. In 20-cm SCT at 77x, tail 1.6 deg. in p.a. 80 deg. Starlike central condensation: m2=9.5:[TK].) 2016 12 26.76 M 7.6 TK 10.0B 25 4 6 GON Alto del Castro, León 2016 12 25.46 S 7.0:AA 10.0B 25 SEA Cowra, NSW (Moderately enhanced through Swan Band filter. Very low elevation.) 2016 12 22.43 M 8.2 TK 25.0L 39 1.8 6 WYA Walcha, NSW (Outer coma diffuse and appears slightly elongated to the ENE approximately, brightening to a compact centre with a faint stellar central condensation. Low altitude 9.0°. Windy conditions, interference by cloud blowing through from the East.) 2016 12 20.43 M 8.1 TK 25.0L 39 2.4 6 WYA Walcha, NSW (Coma shows a faint stellar central condensation. Inner coma aqua-blue in colour and opaque, fading to edges. Enhances strongly in Swan Band filter. Slight interference by zodiacal light. Low altitude 10.4°.) 2016 12 17.96 M 8.7 TK 10.0B 20 2.5 5 GOI Araçatuba 2016 12 17.77 M 8.5 TK 10.0B 25 2 6 GON Alto del Trichero - Soto y Amío, León (Altitude 8°. Comparison stars at the same low altitude as the comet.) 2016 12 17.76 M 8.7 TK 20.3T 77 2.5 5/ 0.15 80 GON Alto del Trichero - Soto y Amío, León (Altitude 10°. Comparison stars at the same low altitude as the comet.) 2016 12 17.43 M 8.6 TK 25.0L 39 1.5 6 WYA Walcha, NSW (Coma well condensed, opaque in centre with small star-like central condensation, aqua-blue in colour. Enhances strongly in Swan Band filter. Low altitude 12.2°.) 2016 12 4.43 S 11.1 AQ 25.0L 83 1.5 3 WYA Walcha, NSW (Diffuse outer coma, brightening slightly to an opaque centre, weakly condensed. Pale blue in colour. Low altitude 12.7°. Moonlight interference.) 2016 12 3.36 S 11.0 TJ 40.0L 144 1.7 2 YOS Kita-karuizawa, Gunma (Very bright. Diffuse but easy to see.) 2016 12 1.43 S 11.2 AQ 25.0L 83 1.5 2 WYA Walcha, NSW (Coma enhances in Swan Band filter. Coma diffuse with slight brightening to centre, pale aqua-blue in colour. Slight twilight/zodiacal light interference. Low altitude 14.9°.)
2011 12 7.23 S 10.5 TK 20.3T 100 3 2/ GON Alto del Castro - Aralla, León (Zodiacal light.) 2011 11 25.83 S 13.5 AU 40.0L 257 0.6 2 YOS Kita-karuizawa, Gunma (It became very small and very faint.) 2011 11 8.22 S 9.5 TK 20.3T 77 5 3 0.4 290 GON El Fito - Sierra del Sueve, Asturias (Several stars in coma, the brightest being mag 11.6 [TK]. Zodiacal light. Altitude: 22 deg.) 2011 10 30.19 S 9.2 TK 20.3T 77 3.5 3/ 0.2 290 GON Alto del Castro - Aralla, León (Altitude: 10 deg. Mountain location, very clear sky.) 2011 10 24.179 S 9.8 TK 15.5L 36 3.5 4 BOU Burlage, Germany 2011 10 24.178 S 10.1 TK 15.5L 36 2.5 4/ DIJ Burlage 2011 10 22.19 S 9.8 TK 20.3T 67 3.0 4 0.2 300 BIV Pico-Veleta, Spain 2011 10 20.21 S 9.3 TK 20.3T 67 3.0 5 0.2 300 BIV Pico-Veleta, Spain 2011 10 18.21 S 9.4 TK 20.3T 67 3.0 5 0.2 305 BIV Pico-Veleta, Spain 2011 10 17.21 S 9.1 TK 20.3T 67 3.0 6 0.3 290 BIV Pico-Veleta, Spain 2011 10 17.20 B 8.9 TK 5.0B 7 3 7 BIV Pico-Veleta, Spain 2011 10 15.21 S 9.0 TK 20.3T 67 3.0 6 0.3 290 BIV Pico-Veleta, Spain 2011 10 15.20 B 8.9 TK 5.0B 7 4 7 BIV Pico-Veleta, Spain 2011 10 14.21 B 8.7 TK 20.3T 67 2.5 6 0.2 290 BIV Pico-Veleta, Spain 2011 10 14.20 B 8.5 TK 5.0B 7 3 7 BIV Pico-Veleta, Spain 2011 10 9.22 B 7.5 TK 5.0B 10 4 7/ GON Alto del Castro - Aralla, León (Zodiacal light. Astronomical twilight. Altitude: 19 deg. Mountain location, very clear sky.) 2011 10 9.21 B 7.7 TK 20.3T 77 4 7 1.9 300 GON Alto del Castro - Aralla, León 2011 10 9.164 M 7.8 TK 8.0B 15 3 5/ BOU Sint Annen 2011 10 8.81 M 8.0 TJ 40.0L 36 3.5 7/ YOS Kita-karuizawa, Gunma (I felt that the comet became softer and wider than the previous day, maybe because I observed it at a higher altitude.) 2011 10 7.80 M 8.0 TJ 40.0L 36 1.9 8 YOS Kita-karuizawa, Gunma (Intensely bright! Shining like a bright star!) 2011 10 7.33 S 7.6 TK 10.0B 20 4 5/ GOI Araçatuba (Comet altitude 10°, same altitude of the comparison stars. Nautical twilight.) 2011 10 4.33 S 7.3 TK 10.0B 20 4 6 GOI Araçatuba (Comet altitude 9°, same altitude of the comparison stars.) 2011 10 4.166 S 6.9 TK 8.0B 15 2.5 6/ DIJ Burlage 2011 10 2.19 B 7.3 TK 25.6L 52 3.0 7 0.4 290 BIV Versailles 2011 10 2.18 B 7.2 TK 5.0B 7 5 7 BIV Versailles 2011 10 1.21 B 7.2 TK 10.0B 25 4 7 0.6 290 GON Alto del Castro - Aralla, León (Zodiacal light. Altitude: 16 deg. The presence of some haze over the horizon didn't allow to observe more tail length.) 2011 10 1.156 S 7.0 TK 10.0B 14 3 7 LOO Meeuwen 2011 10 1.150 S 6.9 TK 8.0B 15 2 7 DIJ Burlage 2011 9 30.151 M 6.7 TK 8.0B 15 3.5 7 BOU Burlage, Germany 2011 9 30.150 S 6.7 TK 8.0B 15 2.5 7/ DIJ Burlage 2011 9 29.177 S 6.8 TK 5.0B 10 2.5 7 LOO Genk 2011 9 28.19 S 7.0 TK 40.7L 71 3.0 7 0.2 290 BIV Versailles 2011 9 28.18 B 6.9 TK 5.0B 7 5 7 BIV Versailles 2011 9 27.14 M 7.4 TK 10.0R 25 3 6 GRA Fjellhamar (Some cloud interference; alt. 9 deg., Solar alt. -14 deg.) 2011 9 25.18 S 6.6 TK 5.0B 10 5 6 GON Alto del Castro - Aralla, León (In 20-cm SCT at 77x, 0.6 deg. tail in p.a. 280 deg. Altitude: 9 deg. Comparison stars at the same low altitude as the comet. Some interference from the nearby Moon [phase 0.07]. Zodiacal light. Mountain location, very clear sky.) 2011 9 25.18 S 6.8 TK 40.7L 71 3.0 7 0.4 290 BIV Ambeyrac 2011 9 25.17 B 7.1 TK 5.0B 7 4 8 BIV Ambeyrac 2011 9 24.14 M 7.2 TK 10.0R 25 3 6/ GRA Fjellhamar (Well visible despite low altitude of 9 deg. and twilight [solar alt. -13 deg.]. Also faintly seen through 10x50 binoculars.) 2011 9 23.18 B 7.2 TK 5.0B 7 3 8 BIV Ambeyrac 2011 9 23.17 B 7.5 TK 40.7L 71 3.0 7 0.2 280 BIV Ambeyrac 2011 9 22.174 S 6.6 TK 10.0B 14 5 3 LOO Genk (Moonlight and twilight.) 2011 8 11.35 S 8.9 TK 22.0L 60 12 1/ GOI Araçatuba (Little or no change with comet filter.) 2011 8 9.15 S 9.5:TK 22.0L 60 7 2 GOI Araçatuba 2011 8 8.07 S 9.2 TK 20.3T 77 8 2/ GON Pandorado, León (Mountain location, very clear sky. Comparison stars at the same low altitude [6°] as the comet.) 2011 8 4.10 S 10.9 AU 22.0L 160 4 1/ GOI Araçatuba 2011 8 4.08 S 9.8 TK 20.3T 77 8 2/ GON Alto del Castro - Aralla, León (Mountain location, very clear sky. Altitude: 15 deg.) 2011 8 1.10 S 10.7 TK 20.3T 133 6 2/ GON Alto del Castro - Aralla, León (Mountain location, very clear sky. Altitude: 18 deg.) 2011 7 30.25 S 11.8:AU 22.0L 160 2 2 GOI Araçatuba 2011 7 28.04 S 11.3 TK 20.3T 133 5 2/ GON Alto del Castro - Aralla, León (Comet significantly brighter than expected. 5' coma with faint and diffuse outer region. Observation made from mountain location under very good seeing conditions. Motion checked over a 75-min period. Nearby field stars checked in DSS. Limiting star magnitude near comet: 15.3 [GSC].)
2001 lightcurve 2001 5 12.903 S 11.9 GA 31.0J 109 1.1 1 BOU Sint Annen (Twilight, altitude 14 deg.) 2001 5 11.902 S 12.0 GA 31.0J 109 1.3 1/ DIJ Sint Annen 2001 5 11.900 S 11.8 GA 31.0J 109 1.0 1 BOU Sint Annen (Twilight, altitude 14.5 deg.) 2001 5 10.907 S 12.0 GA 31.0J 109 1.2 1/ DIJ Sint Annen 2001 5 10.903 S 11.8 GA 31.0J 109 1.1 1/ BOU Sint Annen (Twilight, altitude 13.5 deg.) 2001 4 23.860 S 10.0 TJ 31.0J 72 2 1/ DIJ Sint Annen 2001 4 23.856 S 10.0 TJ 31.0J 72 1.6 2 BOU Sint Annen (Altitude 13.5 deg.) 2001 4 21.856 S 9.7 TJ 31.0J 72 3 1/ DIJ Sint Annen 2001 4 21.855 S 9.9 TJ 31.0J 72 1.7 3/ BOU Sint Annen (Comet becoming more diffuse. Altitude 12 deg.) 2001 4 19.852 M 9.8 TJ 25.4J 72 1.8 4/ BOU Sint Annen (Comet observed in clearing between patchy cloud. Altitude only 11 deg.) 2001 4 18.856 S 10.0:TJ 25.4J 72 3 DIJ Sint Annen 2001 4 18.851 M 9.7 TJ 25.4J 72 2.0 5 BOU Sint Annen (Comet well visible in very transparent sky. Altitude 10 deg.) 2001 4 13.842 S 9.2 TJ 25.4J 58 2.2 4/ BOU Bedum (Comet well visible in twilight. Altitude only 8 deg.) 2001 4 12.844 S 9.1 TJ 25.4J 72 1.5 5 BOU Bedum (Comet in twilight, and at altitude of only 6.5 deg., but well visible.) 2001 4 11.839 S 9.2 TJ 25.4J 88 1.2 5 BOU Bedum (Comet seen at very low altitude of 6.5 deg. as a small well condensed nebula, despite interference from twilight, and some greenish-white aurora.)