* * * * * 8P/Tuttle * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2008 4 3.44 S 8.6 AA 10.0B 25 SEA Cowra, NSW 2008 4 2.41 S 8.9 TK 10.0B 25 6 4/ MAT Castlemaine, Victoria 2008 3 31.43 S 8.9 TK 20.0L 67 5 4 MAT Castlemaine, Victoria 2008 3 27.42 B 8.4 AA 10.0B 25 8 SEA Cowra, NSW 2008 3 9.44 S 8.0 AA 10.0B 25 SEA The Entrance, NSW 2008 3 4.43 B 8.0 AA 10.0B 25 12 5 SEA Cowra, NSW 2008 3 2.46 B 7.8 AA 10.0B 25 8 SEA Cowra, NSW 2008 2 7.49 S 7.1 AA 3.5B 6 SEA Cowra, NSW 2008 2 5.47 S 6.8 AA 3.5B 6 SEA Cowra, NSW (Hazy high cloud.) 2008 1 29.79 S 6.5 TK 5.0B 10 12 4 GON Los Veneros - Sierra del Aramo, Asturias 2008 1 27.79 S 6.4 TK 5.0B 10 13 4 GON Alto del Castro - Aralla, León 2008 1 27.44 S 6.7 AA 5.0B 10 8 SEA The Entrance, NSW 2008 1 26.80 S 6.3 TK 5.0B 10 15 4 GON Sierra del Aramo, Asturias 2008 1 13.78 S 5.6 TK 3.0R 4 25 5 GON Los Veneros - Sierra del Aramo, Asturias 2008 1 13.766 S 6.1 TK 8.0B 15 12 2/ BOU Garmerwolde 2008 1 12.79 S 7.1:HV 5.0B 7 18 4 BIV Versailles 2008 1 11.44 S 5.9 AA 0.0E 1 SEA Cowra, NSW 2008 1 10.83 S 5.5 TK 3.0R 4 25 4 GON Grandota, Oviedo, Asturias 2008 1 10.44 S 6.0 AA 3.0B 3 SEA Cowra, NSW 2008 1 9.86 S 5.4 TK 3.0R 4 25 4 GON Cueto Rosales - Riello, León (Mountain location, very clear sky.) 2008 1 9.785 S 5.7 TK 5.0B 7 18 4 DIJ Noorddijk 2008 1 9.756 S 5.9 TK 5.0B 10 &20 3 COM Roden 2008 1 9.50 S 5.9 AA 3.5B 6 SEA Cowra, NSW 2008 1 8.44 S 5.5 AA 0.0E 1 SEA Cowra, NSW 2008 1 7.869 S 5.8 TK 5.0B 10 &20 3/ COM Roden 2008 1 7.860 S 5.8 TK 5.0B 7 18 3/ BOU Noordwolde 2008 1 7.805 S 5.6 TK 5.0B 7 22 4 DIJ Noorddijk 2008 1 6.78 S 5.2 TK 3.0R 4 30 4 GON San Miguel de Reinante, Lugo (Near sea level location, clear sky.) 2008 1 6.766 S 5.6 TK 5.0B 7 18 4 BOU Bedum 2008 1 6.740 S 5.7 TK 5.0B 7 30 4 DIJ Gent, Belgium 2008 1 6.740 S 5.5 TK 5.0B 7 11 3 LOO Genk 2008 1 6.47 S 5.6:TJ 6.6R 10 17 2/ YOS Yokohama City, Kanagawa (Very bad condition due to the terrible city light pollution. Extremely difficult to see a 5-mag comet.) 2008 1 5.48 S 5.3:TJ 6.6R 10 14 3/ YOS Yokohama City, Kanagawa (Very bad condition due to the terrible city light pollution. Extremely difficult to see a 5-mag comet.) 2008 1 4.65 S 5.9 HI 5.0B 7 20 3/ NOV Kondopoga 2008 1 4.44 S 5.7 YG 7.0R 10 20 6 YOS Mt. Hanadate, Ibaraki (Strongly condensed in the mountain location, and visible with naked eyes.) 2008 1 3.83 M 5.7 TK 5.0R 8 20 4 GRA Steinkjer (With 8x50R and 10x50B, the comet showed a diffuse coma and was markedly easier to see than M33 and NGC 7789. NEL about 5.5.) 2008 1 3.79 S 5.1 TK 0.0E 1 30 5 GON Sierra del Aramo, Asturias 2008 1 3.78 S 5.2 TK 3.0R 4 35 4 GON Sierra del Aramo, Asturias (Mountain location, very clear sky.) 2008 1 3.63 S 5.6 HI 5.0B 7 24 3/ NOV Kondopoga 2008 1 3.63 B 5.9 YG 4.5B 12 15 3 CHE Saransk 2008 1 3.44 S 5.4 YG 7.0R 10 24 3/ YOS Fujishiro, Toride City, Ibaraki (Diffuse in the city light pollution.) 2008 1 2.813 S 5.3 TK 5.0B 7 10 3 LOO Genk 2008 1 2.65 M 5.6 HI 5.0B 7 21 3 NOV Kondopoga 2008 1 2.51 S 5.5 TJ 6.6R 10 18 3/ YOS Yokohama City, Kanagawa 2008 1 2.45 S 5.7 AA 5.0B 10 SEA The Entrance, NSW 2008 1 1.99 S 6.2 HV 5.0B 7 15 5 BIV Pico-Veleta, Spain 2008 1 1.969 S 5.7 TK 5.0B 7 14 4 DIJ Groningen 2008 1 1.951 S 5.8 TK 5.0B 7 18 3/ BOU Noordwolde 2008 1 1.65 M 5.9 HI 5.0B 7 22 5 NOV Konchezero 2008 1 1.46 S 5.6 TJ 6.6R 10 19 4 YOS Yokohama City, Kanagawa 2008 1 1.03 S 5.6 TK 3.0R 4 27 4 GON Dosango - Santo Adriano, Asturias 2007 12 31.98 S 5.9 HV 0.0E 1 20 3 BIV Pico-Veleta, Spain 2007 12 31.98 S 6.2 HV 5.0B 7 18 5 BIV Pico-Veleta, Spain 2007 12 31.742 S 5.7 TK 5.0B 7 14 4 DIJ Noorddijk 2007 12 31.47 S 5.7 TJ 6.6R 10 15 3/ YOS Yokohama City, Kanagawa (Unexpectedly, moderately condensed. It was near by a bright galaxy M33, within the same field of view. M33 was a very hard object due to the light pullution. But I managed to catch the faint diffuse galaxy and see the rendezvous.) 2007 12 30.95 S 6.5 HV 5.0B 7 18 5 BIV Pico-Veleta, Spain 2007 12 30.91 S 5.8 TK 5.0B 10 15 4 GIL Noordwijk aan Zee (Both M33 and 8P/Tuttle faintly visible with naked eye.) 2007 12 30.86 M 6.0 TK 5.0R 8 21 3/ GRA Tryvann, Oslo (Using 8x50R and 7x50B, the comet was of similar total brightness as the nearby galaxy M33, but it appeared smaller and more condensed than the latter object. 8P was also seen through 3x18R, but not detected with naked eye [NEL was 5.5-6.0]. A short-exposure image, 6 seconds at ISO 800 using Canon EOS 400D + 100mm f/2 lens, gave a reasonable representation of how the view looked like through small instruments, although the greenish colour of the comet was not seen visually.) 2007 12 30.80 S 5.8 TK 3.0B 6 25 4 GON Aralla, León 2007 12 30.79 S 5.6 TK 0.0E 1 25 5 GON Aralla, León (Mountain location, very clear sky.) 2007 12 30.781 S 5.9 TK 5.0B 7 18 4/ DIJ Sint Annen (Nice view, comet next to M33.) 2007 12 30.781 S 5.8 TK 5.0B 7 20 3/ BOU Sint Annen 2007 12 30.43 S 6.0 AA 5.0B 10 12 SEA Cowra, NSW 2007 12 29.93 S 6.3 HV 5.0B 7 15 5 BIV Pico-Veleta, Spain 2007 12 29.772 S 6.2 TK 5.0B 7 20 4 DIJ Sint Annen (Also visible with naked eye.) 2007 12 29.770 S 5.9 TK 5.0B 7 20 3/ BOU Sint Annen (8P smaller, but with higher surface brightness than nearby M33. Both objects also faintly visible with naked eye.) 2007 12 28.91 S 6.8 HV 5.0B 7 20 4 BIV Pico-Veleta, Spain 2007 12 28.733 S 7.2 TK 5.0R 10 12 3 LOO Genk 2007 12 28.13 M 6.2 TK 5.0B 7 15 3/ GRA Fjellhamar (Comet seen without difficulty despite a quite low altitude and moonlight.) 2007 12 26.77 S 6.1 TK 3.0B 6 15 3 GON Quintanilla - La Magdalena, León 2007 12 25.70 M 6.5 TK 5.0B 7 15 3/ GRA Steinkjer (Well visible despite an almost full Moon low in eastern sky. NEL about 5.5.) 2007 12 22.88 S 6.8 TK 5.0B 7 12 2 NOV Kondopoga 2007 12 22.763 S 6.6 TK 15.6L 24 9 3/ DIJ Garmerwolde 2007 12 22.759 S 6.7 TK 15.6L 24 7 3 BOU Garmerwolde (Strong moonlight and slightly hazy sky, but comet well visible near zenith.) 2007 12 20.84 S 7.2 TK 5.0B 7 10 2 NOV Kondopoga 2007 12 19.229 S 7.4 TK 25.0L 53 5.0 2 LOO Genk 2007 12 19.22 M 7.0 TK 5.0B 7 17 4 GRA Hågår Obs., Eina (Easily visible, comparable to M81 in appearance; this comet showed a considerably higher surface brightness than 17P. Dark sky.) 2007 12 17.88 M 7.3 TK 7.0R 20 12 3/ GRA Tryvann, Oslo 2007 12 17.88 S 7.3 TK 5.0B 7 12 3 GRA Tryvann, Oslo (Faint in 7x50B, but easily seen through the larger instrument; the surface brightness of 8P was markedly higher than M33. Quite favourable conditions desite a first quarter Moon [NEL = 5.5].) 2007 12 16.749 S 7.7 TK 25.0L 53 9.0 2 LOO Genk 2007 12 15.96 S 7.6 TK 8.0R 16 12 4 GIL Noordwijk aan Zee 2007 12 15.94 S 8.5 TK 5.0B 7 10 3 BIV Versailles 2007 12 15.935 S 7.5 TK 6.0B 15 10 3/ DIJ Noorddijk 2007 12 15.92 S 8.6 TK 25.6L 42 8 3 BIV Versailles 2007 12 15.914 S 7.3 TK 5.0B 7 12 2/ BOU Sint Annen 2007 12 15.906 M 7.4 TK 15.6L 24 8.5 4/ BOU Sint Annen 2007 12 15.873 S 8.2 TK 30.5T 56 7.5 3 COM Roden 2007 12 15.74 S 7.8 TK 6.0R 35 9 3/ NOV Konchezero 2007 12 15.72 S 7.8 TK 5.0B 7 7 2 NOV Konchezero 2007 12 14.20 S 8.1 TK 6.0R 35 7 3 NOV Konchezero 2007 12 13.938 S 7.6 TK 6.0B 15 9 4 DIJ Noorddijk 2007 12 13.790 M 7.7 TK 15.6L 24 9 4 BOU Sint Annen 2007 12 11.91 S 8.2 TK 12.7R 39 8 3 GIL Noordwijk aan Zee 2007 12 11.878 S 8.3 TK 25.0L 53 2.0 3 LOO Genk 2007 12 11.833 S 8.5 TK 30.5T 56 & 9 2 COM Roden 2007 12 11.79 S 7.6 TK 5.0B 10 10 2/ GON Sierra del Aramo, Asturias 2007 12 11.767 S 8.0 TK 8.0B 15 9 4 BOU Lauwersoog 2007 12 10.95 S 8.2 TK 5.0B 7 12 3 BIV Pico-Veleta, Spain 2007 12 11.70 S 8.0 TK 5.0B 10 11 2 GRA Råholt (The comet appeared faint and showed a diffuse and extended coma; its surface brightness was similar to M33, although the latter object was considerably larger in angular extent.) 2007 12 10.767 S 8.4 TK 15.6L 24 9 4 DIJ Sint Annen 2007 12 10.766 M 8.1 TK 15.6L 24 8 4 BOU Sint Annen 2007 12 9.94 S 8.4 TK 5.0B 7 12 3 BIV Pico-Veleta, Spain 2007 12 9.749 S 8.5 TK 15.6L 24 9 4 DIJ Sint Annen 2007 12 9.747 M 8.1 TK 15.6L 24 8 4 BOU Sint Annen 2007 12 9.46 S 7.9 TJ 7.0R 10 10 3 YOS Kita-karuizawa, Gunma 2007 12 9.45 S 8.7 TJ 40.0L 36 9 3/ YOS Kita-karuizawa, Gunma (Diffuse, but moderately condensed in the center.) 2007 12 8.92 S 8.4 TK 5.0B 7 15 3 BIV Pico-Veleta, Spain 2007 12 8.80 S 8.3 TK 10.0B 25 10 2 GON Grandota, Oviedo, Asturias 2007 12 8.46 S 8.1 TJ 7.0R 10 16 2 YOS Kita-karuizawa, Gunma (It is also visible, bright and large, through a small monocular.) 2007 12 8.45 S 8.4 TJ 40.0L 36 13 3 YOS Kita-karuizawa, Gunma (Very very large! I observe this comet for the first time since early November, and the comet became completely different during one month.) 2007 12 8.125 S 9.0:TK 30.5T 56 & 5 1/ COM Roden (Comet very close to a magn. 11 and 12 double star.) 2007 12 7.974 S 8.9 TK 15.5L 50 7.5 2/ DIJ Groningen 2007 12 5.981 S 8.6 TK 15.6L 29 8 3 BOU Sint Annen 2007 12 5.948 S 9.0 TK 15.5L 50 7 2/ DIJ Groningen 2007 12 5.01 S 8.6 TK 5.0B 10 12 2 GON Alto del Castro - Aralla, León 2007 12 5.00 S 8.8 TK 10.0B 25 10 2/ GON Alto del Castro - Aralla, León 2007 12 4.02 S 9.0 TK 15.2L 29 7 2 GRA Fjellhamar (The comet showed a diffuse and ill-defined coma of low surface brightness, somewhat inferior to that of NGC 205. It appeared faint but was definitely seen under a Bortle class 6 sky [NEL approx. 5.5].) 2007 12 1.79 S 9.5:HI 6.0R 35 4 1/ NOV Konchezero 2007 11 29.823 S 9.2 TK 15.6L 29 7 2/ BOU Sint Annen 2007 11 27.79 S 9.3 TK 10.0B 25 11 2/ GON Alto del Trichero - Soto y Amío, León 2007 11 27.78 S 9.5 TK 20.3T 77 8 2/ GON Alto del Trichero - Soto y Amío, León 2007 11 16.99 S 10.2 TA 12.7R 26 6 2 GIL Noordwijk aan Zee 2007 11 16.891 S 10.2 TA 15.6L 36 5.5 1/ BOU Sint Annen 2007 11 15.87 S 11.8 TK 25.6L 42 3.0 2 BIV Versailles 2007 11 15.042 S 10.3 TA 15.6L 29 6 1/ BOU Sint Annen 2007 11 13.85 S 10.5 TK 10.0B 25 6 2 GON Alto del Castro - Aralla, León 2007 11 12.167 S 12.0: 25.0L 53 0.5 3 LOO Genk 2007 11 9.96 S 11.8 TA 28.0T 93 3.5 2 GRA Svarstad (Seen as a fairly large diffuse object of quite low surface brighness. The comet was also detected on an unguided 30s image using a digital SLR (Canon 400D) and 100-mm FL lens at f/2.0. Dark sky with NEL near 6.5. This observation was made during the annual astronomy conference of Deep Sky Exploration.) 2007 11 9.92 S 11.3 TK 10.0B 25 4 2/ GON Alto del Castro - Aralla, León 2007 11 7.94 S 11.8 TK 20.3T 77 4 2 GON Alto del Castro - Aralla, León 2007 11 7.10 S 12.9 HS 25.6L 84 1.4 3 BIV Versailles 2007 11 6.21 S 13.0 HS 25.6L 84 1 3 BIV versailles 2007 11 3.85 S 12.1 TK 20.3T 77 3.5 2/ GON Alto del Castro - Aralla, León (From dark mountain skies the coma appears large and diffuse.) 2007 11 3.43 S 13.1 TA 40.0L 144 1.0 1 YOS Kita-karuizawa, Gunma (Already bright and large, as people reported recently. Diffuse.) 2007 10 30.767 S 12.7 TA 31.0J 109 2.1 1/ DIJ Sint Annen 2007 10 30.764 S 13.2 TA 31.0J 109 1.5 1/ BOU Sint Annen 2007 10 6.43 S[14.5 HS 40.0L 257 !0.3 YOS Kita-karuizawa, Gunma (A nearby 15 mag star was clearly visible, but the comet was not. The ephemeris says it is already 14 mag, so I wonder when it brightens actually.) 2007 10 5.43 S[14.6 40.0L 257 !0.4 YOS Kita-karuizawa, Gunma (Not visible. Still too faint. It located just between two 15 mag stars and I could fix the precise position, but nothing was visible. Comparison stars from USNO-A2.0, preliminary V magnitude calculated from R and B magnitude.) 2007 9 14.88 S 15.2:HS 40.7L 233 0.4 4 BIV Southern Alps, France