* * * * * 88P/Howell * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2015 9 21.73 S 13.2 TA 40.0L 144 1.3 2 YOS Kita-karuizawa, Gunma (It became faint, but it looks large and diffuse.) 2015 9 8.05 S 11.7 TK 20.3T 100 2 1/ GON Alto del Castro, León 2015 8 20.77 M 12.4 TK 40.6L 165 1 2 CAM Warners Bay, NSW 2015 8 19.12 S 10.8 TK 20.3T 77 3 2 GON Cueto Rosales, León 2015 8 17.77 M 12.3 AQ 40.6L 165 1.3 2 CAM Warners Bay, NSW 2015 8 16.73 M 12.2 AQ 40.6L 165 1.5 2 CAM Warners Bay, NSW 2015 8 14.77 M 12.0 AQ 40.6L 76 1.5 2 CAM Warners Bay, NSW 2015 8 12.76 M 12.2 AQ 40.6L 76 2 2 CAM Warners Bay, NSW 2015 8 11.77 M 12.0 AQ 40.6L 165 2 2 CAM Warners Bay, NSW 2015 8 10.78 M 12.0 AQ 40.6L 76 2 2 CAM Warners Bay, NSW 2015 8 9.03 S 10.4 TK 20.3T 77 3 2/ GON Cueto Rosales, León 2015 8 8.78 M 12.1 AQ 40.6L 76 2 2 CAM Warners Bay, NSW 2015 8 8.23 S 11.6 AU 22.0L 160 1.5 3 GOI Araçatuba 2015 7 28.76 M 12.0 AQ 40.6L 76 2.5 1 CAM Warners Bay, NSW 2015 7 27.78 M 12.0 AQ 40.6L 76 2.8 1 CAM Warners Bay, NSW 2015 7 27.75 S 11.5 TA 25.0L 39 3.2 2/ WYA Walcha, NSW (Coma very diffuse with slight brightening to centre.) 2015 7 26.77 M 12.0 AQ 40.6L 76 2.3 1 CAM Warners Bay, NSW 2015 7 24.77 M 11.5 AQ 40.6L 76 2.5 1 CAM Warners Bay, NSW 2015 7 23.31 S 11.0 AU 22.0L 160 3 3 GOI Araçatuba 2015 7 17.78 M 11.0 AQ 40.6L 76 3 1 CAM Warners Bay, NSW 2015 7 16.76 M 11.2 AQ 40.6L 76 3 1 CAM Warners Bay, NSW 2015 7 14.11 S 9.6 TK 20.3T 77 3 3 GON Santiago Millas, León 2015 7 13.76 M 11.2 AQ 40.6L 76 2.8 1 CAM Warners Bay, NSW 2015 7 10.76 M 11.0 AQ 40.6L 76 3 1 CAM Warners Bay, NSW 2015 6 27.80 S 10.6 TK 40.6L 76 2 1 CAM Warners Bay, NSW 2015 6 27.76 M 9.7 TA 25.0L 39 2.9 3 WYA Walcha, NSW (Coma enhances using Swan Band filter. Coma diffuse, transparent with slightly more condensed and opaque central condensation.) 2015 6 26.77 S 10.8 TK 40.6L 76 2.8 2 CAM Warners Bay, NSW 2015 6 22.79 S 10.8 TK 40.6L 76 2.5 2 CAM Warners Bay, NSW 2015 6 22.77 M 10.4 TA 25.0L 39 4.0 4 WYA Walcha, NSW (Coma enhances moderately using Swan Band filter. Coma large and diffuse, broad opaque inner coma, pale aqua-blue in colour.) 2015 6 21.81 S 11.0 TK 40.6L 76 2.5 2 CAM Warners Bay, NSW 2015 6 17.80 S 10.7 TK 40.6L 76 3.0 2/ CAM Warners Bay, NSW 2015 6 14.81 S 10.8 TK 40.6L 76 2.8 2/ CAM Warners Bay, NSW 2015 6 13.31 S 11.0 AU 22.0L 120 2 3 GOI Araçatuba (Great enhancement with Swan filter.) 2015 6 8.80 S 10.5 TK 40.6L 76 3.0 2 CAM Warners Bay, NSW 2015 6 6.81 S 10.3 TK 40.6L 76 2.5 2 CAM Warners Bay, NSW 2015 6 5.77 S 10.5 TK 40.6L 76 2.5 2 CAM Warners Bay, NSW 2015 6 4.76 S 10.4 TK 25.0L 39 2.6 3 WYA Walcha, NSW (Moonlight. Difficult due to diffuseness and size. Coma enhances in Swan Band filter. Opaque centre, slightly brighter and more condensed than edges although weakly formed.) 2015 6 3.78 S 10.0 TK 40.6L 76 2.5 2 CAM Warners Bay, NSW 2015 6 2.76 S 10.2 TK 40.6L 76 3.0 2 CAM Warners Bay, NSW 2015 6 1.80 S 10.1 TK 40.6L 76 3.0 2 CAM Warners Bay, NSW 2015 6 1.76 S 9.6 TA 25.0L 39 2.6 2/ WYA Walcha, NSW (Moonlight. Coma diffuse, slight brightening to centre. Enhances well in Swan Band filter.) 2015 5 31.78 S 10.2 TK 40.6L 76 3.0 2/ CAM Warners Bay, NSW 2015 5 25.79 S 10.3 TK 40.6L 76 3.5 2 CAM Warners Bay, NSW 2015 5 24.35 S 9.9 TK 22.0L 60 3 4/ GOI Araçatuba (Enhances in Swan Band filter.) 2015 5 16.35 S 9.7 TK 22.0L 60 3 4 GOI Araçatuba 2015 5 14.75 M 9.8 TK 25.0L 39 3.5 5/ WYA Walcha, NSW (Coma enhances in Swan Band filter. Diffuse hut opaque outer coma, round in appearance, moderately condensed inner coma almost faintly stellar in centre, pale aqua-blue in colour.) 2015 5 13.78 S 10.3 TK 40.6L 76 3.0 2/ CAM Warners Bay, NSW 2015 5 12.78 S 10.0 TK 40.6L 76 3.0 3 CAM Warners Bay, NSW 2015 5 11.78 S 10.0 TK 40.6L 76 3.0 3 CAM Warners Bay, NSW 2015 5 10.77 S 10.1 TK 40.6L 76 3.0 3 CAM Warners Bay, NSW 2015 5 9.78 S 10.0 TK 40.6L 76 3.5 3 CAM Warners Bay, NSW 2015 5 8.79 S 10.0 TK 40.6L 76 4.0 3 CAM Warners Bay, NSW 2015 5 8.76 M 9.6 TK 25.0L 39 4.5 3/ WYA Walcha, NSW (Moonlight. Diffuse outer coma, slightly brighter inner coma but weakly condensed. Enhances in Swan Band filter.) 2015 5 7.78 S 9.8 TK 40.6L 76 3.0 3 CAM Warners Bay, NSW 2015 5 6.76 S 9.8 TK 25.0L 39 3 3 WYA Walcha, NSW (Moonlight. Outer coma appears like a diffuse patch, inner coma weakly condensed. Enhances in Swan Band filter.) 2015 5 5.76 S 9.8 TK 40.6L 76 3.0 3 CAM Warners Bay, NSW 2015 5 5.74 S 9.9 TK 25.0L 39 2.8 2/ WYA Walcha, NSW (Moonlight. Coma diffuse with slightly brighter centre, moderately condensed. Enhances well in Swan Band filter.) 2015 5 2.78 S 10.2 TJ 40.0L 144 1.2 2/ YOS Kita-karuizawa, Gunma (Hard to guide my telescope due to the low sky condition. Maybe the comet extends larger.) 2015 5 1.31 S 9.3 TK 10.0B 20 4 4 GOI Araçatuba 2015 4 27.73 M 9.4 TK 25.0L 39 3.1 4 WYA Walcha, NSW (Coma enhances moderately in Swan Band filter, shows a diffuse outer coma, brighter inner coma with moderately condensed centre.) 2015 4 26.76 S 9.2 TK 40.6L 76 3.8 4 CAM Warners Bay, NSW 2015 4 26.33 S 9.2 TK 10.0B 20 5 4 GOI Araçatuba 2015 4 25.76 S 9.3 TK 40.6L 76 3.5 3/ CAM Warners Bay, NSW 2015 4 23.78 S 9.0 TK 40.6L 76 4.0 2 CAM Warners Bay, NSW 2015 4 21.34 S 9.2 TK 10.0B 20 5 4 GOI Araçatuba 2015 4 21.33 S 9.3 TK 22.0L 60 5 4/ GOI Araçatuba 2015 4 19.80 S 9.3 TK 10.0B 25 4 3/ MAT Swan Hill, VIC 2015 4 15.78 S 9.0 TK 40.6L 76 2.5 2/ CAM Warners Bay, NSW 2015 4 15.75 M 9.3 TK 25.0L 39 3.4 4 WYA Walcha, NSW (Moonlight. Enhances well in Swan Band filter. Faint background star in coma [magn. 12.0, AQ]. Coma pale aqua-blue in colour.) 2015 4 14.78 S 9.4 TK 40.6L 76 2.5 2 CAM Warners Bay, NSW 2015 4 13.77 S 9.3 TK 40.6L 76 3.0 2 CAM Warners Bay, NSW 2015 4 12.77 S 9.3 TK 40.6L 76 3.0 2/ CAM Warners Bay, NSW 2015 4 12.33 S 9.3 TK 22.0L 60 3.5 4 GOI Araçatuba (Moonlight.) 2015 4 11.78 S 9.4 TK 40.6L 76 3.0 3 CAM Warners Bay, NSW 2015 4 9.73 M 9.8 TK 25.0L 39 3.2 3/ WYA Walcha, NSW (Moonlight. Coma diffuse with a weak but definite brightening to centre. Enhances in Swan Band filter.) 2015 4 8.72 S 9.6 TK 25.0L 39 2.7 3 WYA Walcha, NSW (Moonlight. Coma diffuse with slightly brighter centre, weakly condensed. Enhances in Swan Band filter.) 2015 4 3.31 S 8.8 TK 22.0L 60 4 4 GOI Araçatuba (Moonlight.) 2015 4 1.78 S 9.6 TK 20.3L 62 3.0 3 CAM Warners Bay, NSW 2015 3 29.31 S 8.9 TK 10.0B 20 5 4 GOI Araçatuba 2015 3 27.77 S 9.7 TK 40.6L 76 2.0 2 CAM Warners Bay, NSW 2015 3 27.72 M 9.8 TK 25.0L 39 3.5 3/ WYA Walcha, NSW (Coma appears slightly elongated to NW, moderately condensed. Low altitude 12.4°.) 2015 3 26.77 S 9.8 TK 40.6L 76 2.0 2/ CAM Warners Bay, NSW 2015 3 26.74 S 9.1 AA 10.0B 25 2 SEA Cowra (Comet enhanced through Swan Band filter.) 2015 3 25.77 S 10.0 TK 40.6L 76 2.0 2/ CAM Warners Bay, NSW 2015 3 22.31 S 9.5 TK 22.0L 60 3 4/ GOI Araçatuba 2015 3 18.77 S 10.4 TK 20.3L 62 2.0 2 CAM Warners Bay, NSW 2015 3 1.33 S 10.5 TK 22.0L 60 2.5 4 GOI Araçatuba 2015 2 27.75 S 10.8 TK 20.3L 62 2.0 3 CAM Warners Bay, NSW 2015 2 22.30 S 10.8 AU 22.0L 160 2 3 GOI Araçatuba 2015 1 24.73 S 12.7 AQ 25.0L 83 0.8 2 WYA Walcha, NSW (Very small and diffuse.)
2010 2 2.79 S 12.0 TK 20.3T 133 1.5 4 GON Camposagrado, León 2009 12 4.78 S 8.6 TK 20.3T 77 6 4/ GON Camposagrado, León (Altitude 14°.) 2009 11 18.78 S 8.4 TK 20.3T 77 7 3/ GON Pico Cueto - Busfrio - Cudillero, Asturias (Elongated wide coma with faint outer region. Altitude 12°.) 2009 10 11.79 S 8.6 TK 20.3T 77 4 4 GON Alto del Castro, León (Elongated coma. Astronomical twilight. Altitude 10°.) 2009 9 22.83 S 8.6 TK 20.3T 77 6 3 0.1 110 GON Alto del Castro, León (End of astronomical twilight. Altitude 7°.) 2009 9 20.41 S 8.9 TJ 40.0L 75 3.1 4 YOS Kita-karuizawa, Gunma (Very bright and easy to see even in the low sky. Moderately condensed. It is the 3rd apparition of this comet for me. This is my first comet that I observed in three apparitions.) 2009 9 18.40 S 9.0 AA 10.0B 25 5 SEA Cowra, NSW (Similar or possibly slightly clearer in Swan Band filter.) 2009 9 15.84 S 9.5 TK 20.3T 67 4.5 4 BIV Pico Veleta, Spain 2009 9 14.83 S 9.2 TK 20.3T 77 5 4 GON Alto del Trichero, León (Coma elongated in p.a. 110 deg. End of astronomical twilight. Altitude 8°.) 2009 8 21.87 S 9.8 TK 20.3T 100 5 3 GON Alto del Castro, León (Altitude 8°.) 2009 8 17.84 S 11.7 TK 40.7L 135 1.5 3 BIV Valdrôme 2009 8 15.85 S 11.6 TK 40.7L 58 1.5 3 BIV Valdrôme 2009 8 14.85 S 11.8 TK 40.7L 58 2.0 3 BIV Valdrôme 2009 8 13.85 S 11.4 TK 40.7L 58 1.5 4 BIV Valdrôme 2009 8 11.89 S 10.5 TK 20.3T 77 5 4 GON Alto del Castro, León (Altitude 10°.) 2009 8 11.40 S 8.9 GA 25.4L 71 6 SEA Cowra, NSW 2009 7 14.93 S 12.8 HN 20.3T 206 0.6 6 GON Alto del Castro, León (Comparison stars taken from Henden photometry near 3C279.) 2009 6 20.96 S 13.0 TA 20.3T 133 0.7 6 GON Alto del Castro, León (Nearby field stars checked in DSS. Comparison stars taken from TASS photometry.) 2009 6 17.94 S 13.2 TA 20.3T 133 0.7 5 GON Alto del Castro - Aralla, León (Nearby field stars checked in DSS. Comparison stars taken from TASS photometry.)
2004 11 9.50 S[13.1 HS 40.0L 144 !0.6 YOS Gunma, Japan 2004 10 15.71 S 14.1 AU 40.0L 144 0.9 2 YOS Gunma, Japan 2004 9 17.12 S 12.9 HS 40.7L 116 1.8 3 BIV Ablis 2004 9 10.99 S 12.8:HS 20.3L 63 & 2 1 GUZ Krosno 2004 9 8.958 S 12.0 AU 31.0J 89 1.9 1/ DIJ Sint Annen 2004 9 8.955 S 12.0 AU 31.0J 89 2 1/ BOU Sint Annen 2004 9 8.92 S 13.0:HS 20.3L 63 2 1 GUZ Krosno (Extremely diffuse, at the limit of visibility.) 2004 8 22.047 S 11.3:AU 31.0J 89 2.4 3 DIJ Sint Annen 2004 8 22.040 S 11.8 AU 31.0J 89 2.0 1/ BOU Sint Annen 2004 8 21.77 S 14.1 AU 40.0L 144 1.4 3 YOS Gunma, Japan 2004 8 16.03 S 13.0 HS 40.7L 58 2.0 3 BIV Valdrôme 2004 8 15.95 S 12.1 TK 20.3L 63 2 2 GUZ Krosno 2004 8 15.02 S 12.7 HS 40.7L 58 2.0 3 BIV Valdrôme 2004 8 14.08 S 13.0 HS 40.7L 116 1.6 3 BIV Valdrôme 2004 7 28.051 S 11.3 AU 31.0J 89 1.3 2/ DIJ Sint Annen 2004 7 28.048 S 11.4 AU 31.0J 89 2.2 2/ BOU Sint Annen 2004 7 15.12 S 11.5 TK 20.3T 77 2 2 GON Alto del Castro - Aralla, León 2004 6 24.01 S 10.5:TK 20.3L 63 2 3 GUZ Krosno (Only faintly visible because of low altitude - only 8°.) 2004 6 13.11 S 10.5 TK 20.3T 77 2 3 GON Alto del Castro, León 2004 5 15.79 S 9.9 GA 10.0B 25 3 SEA Cowra, NSW 2004 4 15.76 S 10.3 GA 10.0B 25 2 SEA Cowra, NSW (Comet slightly enhanced using Swan Band filter.)