* * * * * 103P/Hartley 2 * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2011 3 7.890 S 13.0 TA 31.0J 109 1.1 2 BOU Burlage, Germany (Comet close to 2 stars of 14th magnitude.) 2011 3 7.888 S 12.9 TA 31.0J 109 1.2 1 DIJ Burlage 2011 3 7.01 S 12.5 TA 20.3T 133 1.2 3 GON Aralla, León (Nearby field stars checked in DSS. Mountain location, very clear sky.) 2011 3 5.92 S 13.8 HS 40.7L 135 0.6 2 BIV Blieux 2011 2 27.85 S 13.4 HS 40.7L 135 0.7 2 BIV Blieux 2011 2 5.06 S 11.0 TK 20.3T 133 2.5 2 GON Valle Peral - Lena, Asturias 2011 1 28.943 S 10.9 AU 31.0J 58 3 1 BOU Burlage, Germany 2011 1 28.940 S 10.8 AU 31.0J 58 3 1 DIJ Burlage 2011 1 24.89 S 10.2 TK 20.3T 100 3 2/ GON Pandorado, León 2011 1 15.16 S 9.5 TK 20.3T 77 5 2 GON Alto del Castro - Aralla, León (Several stars inside the coma, the brightest being mag. 10.3 (TK)].) 2011 1 9.988 S 9.8 TK 31.0J 58 4.5 1/ BOU Burlage, Germany 2011 1 9.986 S 9.7 TK 31.0J 58 2.8 1/ DIJ Burlage 2011 1 4.12 S 9.3 TK 10.0B 20 10 2 GOI Araçatuba 2011 1 2.988 S 9.5 TK 31.0J 58 5 2 BOU Burlage, Germany 2011 1 2.988 S 9.5 TK 31.0J 58 4 2/ DIJ Burlage 2010 12 30.13 S 9.1 TK 10.0B 20 12 2 GOI Araçatuba 2010 12 30.12 S 9.2 TK 22.0L 60 10 3/ GOI Araçatuba 2010 12 14.12 S 7.6 TK 10.0B 25 12 3 GON Aralla, León 2010 12 13.11 S 9.0 TK 25.6L 42 4 2 BIV Versailles 2010 12 12.956 S 8.0 TK 8.0B 15 6 2/ DIJ Burlage 2010 12 12.953 S 8.0 TK 8.0B 15 7 2 BOU Burlage, Germany (Star of magn. 9.4 [TK] inside coma.) 2010 12 11.55 S 7.9 AA 10.0B 25 8 3 SEA The Entrance, NSW 2010 12 11.05 S 7.4 TK 10.0B 25 12 2/ GON El Fito - Sierra del Sueve, Asturias 2010 12 9.960 S 7.9 TK 8.0B 15 7 2 DIJ Burlage 2010 12 9.15 S 7.4 TK 5.0B 7 15 2 GOI Araçatuba 2010 12 7.51 S 7.6 AA 5.0B 10 12 SEA The Entrance, NSW 2010 12 7.16 S 7.3 TK 5.0B 7 15 2 GOI Araçatuba 2010 12 5.17 S 7.6 TK 10.0B 20 12 3 GOI Araçatuba 2010 12 4.78 S 7.6 TJ 40.0L 36 11 6 YOS Kita-karuiawa, Gunma (It became much smaller than last month. But it is still very bright. The comet was visible in the same field with open clusters M46 and M47. That was a very enjoyable sight.) 2010 12 4.05 S 7.2 TK 5.0B 10 15 3 GON Puente del Embalse de Barrios de Luna, León 2010 11 30.997 S 7.5 TK 8.0B 15 7 3/ DIJ Burlage 2010 10 29.15 S 6.2 HV 5.0B 7 20 3 BIV Pico-Veleta, Spain 2010 11 29.00 S 7.1 TK 5.0B 10 12 3/ GON Puerto de Aralla, León (Before moonrise. Altitude: 16 deg.) 2010 11 16.02 S 6.5 TK 25.4L 60 10 4 IVA Peschanka 2010 11 15.25 S 6.2 TK 5.0B 7 20 3 GOI Araçatuba 2010 11 14.14 S 6.1 TK 5.0B 7 22 3 GOI Araçatuba 2010 11 13.88 S 6.8 TK 7.0B 15 14 3 SID Korenovsk 2010 11 13.19 S 5.3 TK 3.0R 4 30 4 GON Collada Llomena - Ponga, Asturias 2010 11 12.89 S 6.4 TK 7.0B 15 18 3 SID Korenovsk 2010 11 12.54 S 6.3 AA 5.0B 10 20 SEA The Entrance, NSW 2010 11 12.14 S 6.0 TK 5.0B 7 25 3/ GOI Araçatuba 2010 11 11.56 S 6.1 AA 5.0B 10 20 SEA The Entrance, NSW 2010 11 11.180 S 5.8 TK 5.0B 7 15 3/ DIJ Burlage 2010 11 9.53 S 6.3 HV 5.0R 8 18 2 BIV Mauna-Kea, Hawaii 2010 11 9.53 B 6.3:HV 0.6E 1 BIV Mauna-Kea, Hawaii 2010 11 8.53 S 6.3 HV 5.0R 8 15 3 BIV Mauna-Kea, Hawaii 2010 11 8.53 B 5.9 HV 0.6E 1 12 3 BIV Mauna-Kea, Hawaii 2010 11 8.18 S 5.9 TK 2.5B 8 30 3 GOI Araçatuba 2010 11 8.172 S 5.7 TK 5.0B 7 20 4/ DIJ Burlage 2010 11 8.171 S 5.7 TK 5.0B 7 22 4 BOU Burlage, Germany 2010 11 8.17 S 6.0 TK 5.0B 7 25 4 GOI Araçatuba 2010 11 7.53 S 6.3 HV 5.0R 8 15 2 BIV Mauna-Kea, Hawaii 2010 11 7.53 B 6.0 HV 0.6E 1 20 3 BIV Mauna-Kea, Hawaii 2010 11 7.19 S 6.0 TK 5.0B 7 20 4/ GOI Araçatuba 2010 11 7.188 S 5.8 TK 5.0B 7 19 4/ DIJ Burlage 2010 11 7.187 S 5.7 TK 5.0B 7 20 4 BOU Burlage, Germany 2010 11 6.76 S 5.9 TJ 7.0R 10 19 6 YOS Kita-karuiawa, Gunma 2010 11 5.79 S 5.6 TJ 7.0R 10 19 7 YOS Kita-karuiawa, Gunma (Bright. Very large coma extends through a 40-cm telescope. But the central condensation is very strong.) 2010 11 5.61 S 6.1 HV 5.0R 8 15 3 BIV Mauna-Kea, Hawaii 2010 11 5.61 B 5.9 HV 0.6E 1 15 3 BIV Mauna-Kea, Hawaii 2010 11 4.63 S 5.6 HV 0.6E 1 20 3 BIV Mauna-Kea, Hawaii 2010 11 4.62 S 5.9 HV 5.0R 8 25 3 BIV Mauna-Kea, Hawaii 2010 11 4.14 S 4.8 TK 0.0E 1 45 4 GON Alto del Castro - Aralla, León 2010 11 4.12 S 4.9 TK 3.0R 4 40 3/ GON Alto del Castro - Aralla, León (In 20-cm SCT at 77x, m2=11.8 [TK]. Broad tail 0.2-deg in p.a. 290 deg, embedded in the coma.) 2010 11 3.17 S 5.6 TK 5.0B 7 30 2/ GOI Araçatuba 2010 11 2.01 S 6.5 HV 5.0B 7 16 3 BIV Pico-Veleta, Spain 2010 11 1.85 S 5.6 TK 7.0B 15 28 2 SID Korenovsk 2010 11 1.16 S 5.9 HV 5.0B 7 20 2 BIV Pico-Veleta, Spain 2010 11 1.06 S 5.5 YG 0.7E 1 20 2 IVA Antalya, Turkey 2010 10 30.14 S 5.3 TK 5.0B 7 25 2/ GOI Araçatuba 2010 10 29.12 S 5.4 TK 5.0B 7 20 2 GOI Araçatuba (Moonlight.) 2010 10 27.00 S 6.4:HV 5.0B 7 15 3 BIV Pico-Veleta, Spain 2010 10 25.02 S 6.1 HV 5.0B 7 20 3 BIV Pico-Veleta, Spain 2010 10 21.36 S 4.8 TK 2.5B 8 40 2 GOI Araçatuba (Astronomical twilight.) 2010 10 21.35 S 4.9 TK 5.0B 7 40 3/ GOI Araçatuba (Astronomical twilight.) 2010 10 21.19 S 6.1:HV 5.0B 7 30 2 BIV Versailles 2010 10 20.880 S 5.1 TK 5.0B 7 30 2/ DIJ Burlage (Moonlight.) 2010 10 20.19 S 4.7 TK 3.0R 4 45 4 GON Alto del Castro - Aralla, León (Proximity to a 5.5 [TK] mag. star ruled out the attempt for an adequate naked eye estimate. In 7x50B, coma diameter 30', DC=5. Mountain location, very clear sky.) 2010 10 19.34 S 4.9 TK 2.5B 8 40 2 GOI Araçatuba 2010 10 19.33 S 5.0 TK 5.0B 7 40 3 GOI Araçatuba 2010 10 18.72 S 5.9 AA 3.0B 4 24 SEA Cowra, NSW (Somewhat enhanced through Swan Band filter. Small but distinct central condensation in 15x80 binoculars. Intermittently glimpsed naked eye using averted vision.) 2010 10 18.12 S 5.8 HV 0.6E 1 25 3 BIV Versailles 2010 10 18.105 S 5.2 TK 5.0B 7 30 3/ BOU Thesinge 2010 10 18.10 S 4.6 TK 0.0E 1 50 3 GON Alto del Castro - Aralla, León 2010 10 18.09 S 4.7 TK 3.0R 4 50 4 GON Alto del Castro - Aralla, León (In 7x50B, coma diameter 35', DC=5. In 20-cm SCT at 77x, broad dust tail 0.1-deg in p.a. 250 deg, embedded in the coma.) 2010 10 18.08 S 5.8 HV 5.0B 7 25 3 BIV Versailles 2010 10 17.07 S 6.3 HV 20.3L 58 20 3 BIV Versailles 2010 10 17.06 S 5.9 HV 5.0B 7 25 3 BIV Versailles 2010 10 17.05 S 5.7 HV 0.6E 1 30 2 BIV Versailles 2010 10 17.015 S 5.3 TK 2.8R 4 30 4/ DIJ Burlage 2010 10 17.011 S 5.1 TK 2.8R 4 35 4 BOU Burlage, Germany (Comet also seen NE as a faint, fairly large diffuse spot next to star of magn. 5.6 [TK].) 2010 10 16.88 S 6.2:HV 5.0B 7 25 3 BIV Versailles 2010 10 15.00 S 4.7 TK 0.0E 1 60 2 GON Aralla, León 2010 10 14.99 S 4.8 TK 3.0R 4 50 3/ GON Aralla, León (In 7x50B, coma diameter 35', DC=4. Mountain location, very clear sky.) 2010 10 14.83 S 5.3 TK 7.0B 15 40 2 SID Korenovsk 2010 10 14.12 S 5.0 TK 2.5B 8 40 2 GOI Maceió 2010 10 13.93 S 5.0 TK 3.0R 4 50 3/ GON Pandorado, León (Coma involved with two 6.8 mag [TK] stars. In 20-cm SCT at 77x, dust tail 0.2 deg. in p.a. 250 deg.) 2010 10 12.91 S 6.6 HV 40.7L 58 20 2 BIV Versailles 2010 10 12.91 B 6.1 HV 0.6E 1 25 3 BIV Versailles 2010 10 12.90 S 6.2 HV 5.0B 7 25 3 BIV Versailles 2010 10 12.802 S 5.8 TK 6.0B 10 20 3 DIJ Papenburg 2010 10 12.67 S 6.0 TK 7.0B 15 31 2 SID Korenovsk 2010 10 12.021 S 6.3 TK 5.0B 12 22 2 LOO Genk 2010 10 11.03 B 6.3:HV 0.6E 1 30 3 BIV Versailles 2010 10 10.95 S 6.0 HV 5.0B 7 27 3 BIV Versailles 2010 10 10.94 S 7.0 HV 25.6L 42 20 2 BIV Versailles 2010 10 10.910 S 6.3 TK 5.0B 10 &20 2 COM Roden 2010 10 10.901 S 5.9 TK 5.0B 7 25 4 DIJ Burlage 2010 10 10.854 S 6.3 TK 5.0B 12 21 2 LOO Genk 2010 10 10.841 S 5.8 TK 5.0B 7 22 3 BOU Sint Annen 2010 10 10.84 V 6.8 TK 8.0R 20.0 QVA Holmestrand 2010 10 10.80 M 5.9 TK 5.0B 7 &25 4 GRA Ørfiske, Nittedal 2010 10 10.80 M 5.9 TK 5.0R 16 &25 d4/ GRA Ørfiske, Nittedal 2010 10 10.80 I 6.0 TK 0.7E 1 GRA Ørfiske, Nittedal (Using 7x50B and 5.0R, the comet showed a very diffuse coma, but with a quite bright condensation. 103P appeared as a somewhat more prominent object than M33 and NGC1528. It was also faintly visible to naked eye. Observed from lake Ørfiske under favourable conditions [NEL about 6.3].) 2010 10 10.75 M 5.8 TK 8.0B 20 23 3 NOV Kondopoga 2010 10 10.67 S 6.3 TK 7.0B 15 28 3 SID Korenovsk 2010 10 9.99 S 8.0 HV 40.7L 58 8.0 3 BIV Versailles 2010 10 9.99 S 6.7 HV 5.0B 7 15 2 BIV Versailles 2010 10 9.844 S 5.8 TK 5.0B 7 28 4 DIJ Burlage 2010 10 9.843 S 5.8 TK 5.0B 7 24 3/ BOU Burlage, Germany 2010 10 9.833 S 6.2 TK 5.0B 12 20 2 LOO Genk (Some light pollution. Fine transparant sky. In 30.0-cmL at 115x, 'false' nucleus Mv = 11.8 with comp. stars of [AAVSO] RX And sequence.) 2010 10 9.054 S 6.0 TK 8.0B 15 20 4/ DIJ Burlage 2010 10 9.053 S 5.7 TK 5.0B 7 24 4 DIJ Burlage 2010 10 8.940 S 5.9 TK 5.0B 7 22 3/ BOU Sint Annen 2010 10 8.868 S 6.8 TK 5.0B 12 13 2 LOO Genk (Some light pollution. Humid air.) 2010 10 8.78 S 6.0 YG 25.4L 60 30 3 IVA Peschanka 2010 10 7.89 S 5.1 TK 3.0R 4 50 2/ GON Les Bedules - Ponga, Asturias (Proximity to Perseus Double Cluster ruled out the attempt for a naked eye estimate. In 7x50B, m1=6.0, coma diameter 25'. Several stars inside the coma, the brightest being KK Persei [mag. range 6.6 - 7.9]. Mountain location, very clear sky.) 2010 10 7.88 V 8.0 TK 8.0R 12.0 QVA Holmestrand 2010 10 7.80 M 6.1 HI 8.0L 20 27 3 NOV Konchezero 2010 10 6.84 M 6.6 TK 8.0B 20 26 2 NOV Konchezero 2010 10 6.14 S 6.2:TK 10.0B 20 20 2 GOI Araçatuba (Light polution, comet altitude = 11°, comparison stars at the same altitude.) 2010 10 5.943 S 6.0 TK 5.0B 7 20 3/ DIJ Burlage 2010 10 5.943 S 6.2 TK 6.0B 15 21 3/ DIJ Burlage 2010 10 5.92 M 7.1 TK 5.0B 7 25 2 NOV Sopoha 2010 10 5.797 S 6.1 TK 5.0B 7 25 3 BOU Sint Annen 2010 10 5.788 S 6.3 TK 8.0B 15 20 3/ BOU Sint Annen 2010 10 4.85 S 5.2 TK 3.0R 4 45 3 GON Pandorado, León (Observation made under better conditions, from a higher and darker mountain location, providing a much wider coma diameter and brighter m1 estimate in comparison with my previous Oct. 2.86 observation.) 2010 10 4.841 S 6.3 TK 8.0B 15 20 4 DIJ Burlage 2010 10 4.83 S 5.3 TK 0.0E 1 45 2 GON Pandorado, León 2010 10 4.77 M 7.2 TK 5.0B 7 21 2 NOV Kondopoga 2010 10 3.888 S 6.4 TK 6.0B 15 25 2/ DIJ Burlage 2010 10 2.86 S 6.4 TK 3.0R 4 25 2 GON Collado de Hoz, Cantabria 2010 10 2.84 S 6.6 TK 5.0B 7 18 3 GON Collado de Hoz, Cantabria (In 25x100B, Several 9th mag. stars inside the coma, the brightest being 9.1 [TK]. Mountain location, very clear sky.) 2010 10 1.869 S 6.4 TK 8.0B 15 18 4 DIJ Burlage 2010 9 30.79 V 8.3 TK 10.9R 8.4 QVA Borrevannet, Horten 2010 9 29.82 M 7.3 TK 5.0B 7 12 3 GRA Ørfiske 2010 9 29.80 M 7.4 TK 5.0R 16 12 3 GRA Ørfiske (103P was quite easily seen, also in 7x50B, despite its location near λ Cas. It was also photographed using a 5DII DSLR and 200mm f/2.8 objective. The images showed a diffuse coma with a green hue and a distinct, albeit faint, central condensation. Observed from lake Ørfiske under good conditions [NEL about 6.3)].) 2010 9 28.86 M 7.7 TK 10.0R 25 9 3 GRA Fjellhamar (The comet was fairly well visible through the refractor, but not detected in 7x50B due to moonlight and some light pollution [NEL about 5.7].) 2010 9 28.83 S 7.2 TK 5.0B 10 18 2 GON Puerto de la Magdalena, León (In 25x100B, m1=7.6. Mountain location, very clear sky.) 2010 9 28.795 S 7.1 TK 8.0B 15 15 2/ DIJ Burlage 2010 9 28.785 S 7.2 TK 8.0B 15 16 2/ BOU Sint Annen 2010 9 28.78 V 8.1 TK 10.9R 8.4 QVA Borrevannet, Horten (Moonlight.) 2010 9 27.82 S 7.3 TK 5.0B 10 13 2 GON Grandota, Asturias (In 25x100B, m1=7.7. Rural location, very clear sky.) 2010 9 26.75 S 8.5 TK 13.0L 65 3.5 3 SID Korenovsk 2010 9 20.16 S 8.1 TK 5.0B 10 15 2/ GON Aralla, León (In 25x100B, m1=8.4.) 2010 9 20.01 S 9.4 TK 13.0L 65 6 3 SID Korenovsk 2010 9 19.02 V 10.0 TK 10.9R 4.7 QVA Borrevannet, Horten 2010 9 18.865 S 8.0 TK 8.0B 15 20 0/ DIJ Burlage (Moonlight.) 2010 9 17.994 S 8.2:TK 8.0B 15 &16 2 DIJ Burlage 2010 9 16.98 S 9.4 TK 13.0L 65 6.4 3 SID Korenovsk 2010 9 15.00 S 8.5 TK 5.0B 10 15 2 GON Aralla, León (In 25x100B, m1=8.8.) 2010 9 14.95 M 10.0 TK 15.0L 30 8 3 LOS Saratov 2010 9 14.89 V 10.2 TK 10.9R 5.6 QVA Borrevannet, Horten 2010 9 14.81 S 9.7 TK 25.4L 60 6 d3 IVA Saratov 2010 9 13.82 S 10.0 TK 20.0L 50 5 d3 IVA Saratov 2010 9 13.12 S 9.7 TK 22.0L 160 4 3 GOI Araçatuba 2010 9 12.844 S 8.7 TK 8.0B 15 10 2 DIJ Burlage 2010 9 12.75 S 9.6 TK 13.0L 65 6.7 3 SID Korenovsk 2010 9 12.17 S 9.7 TK 22.0L 160 4 3 GOI Araçatuba 2010 9 11.95 E 9.8 YG 15.0L 30 4 3 LOS Saratov 2010 9 11.946 S 8.9 TK 8.0B 15 9 2 DIJ Burlage 2010 9 11.944 S 8.6 TK 8.0B 15 10 2/ BOU Burlage, Germany 2010 9 11.92 S 10.0 TK 40.7L 58 7.0 3 BIV Ambeyrac 2010 9 11.77 S 9.7 TK 13.0L 65 7.1 3 SID Korenovsk 2010 9 10.84 S 10.0 TK 40.7L 58 6.0 3 BIV Ambeyrac 2010 9 10.82 S 10.0 YG 25.4L 60 4 d3 IVA Saratov 2010 9 10.76 S 9.9 TK 13.0L 65 5.8 3 SID Korenovsk 2010 9 10.12 S 10.3:TK 22.0L 160 2 4 GOI Araçatuba 2010 9 10.05 S 9.3 TK 10.0B 25 8 3 GON Alto del Castro, León (In 20cm SCT at 77x, m1=9.5.) 2010 9 9.93 S 9.7 TK 40.7L 58 5.0 3 BIV Ambeyrac 2010 9 9.92 M 9.9 TK 13.0L 65 6.2 3 NOV Konchezero 2010 9 8.94 M 10.0 TK 13.0L 65 6.2 3 NOV Konchezero 2010 9 8.90 S 9.5 TK 5.0R 16 7 1/ GRA Malm (The comet was a challenging object through my available instrument [the Galileoscope] due to its relative faintness, low surface brightness and location near ο And. It was, however, seen at the correct location and also imaged using a tripod-mounted DSLR [Canon EOS 5DII] with a 200-mm [FL] f/2.8 objective. Observed from mid-Norway under very good conditions [NEL near 6.5.]) 2010 9 8.80 S 9.8 TK 13.0L 65 5.4 3 SID Korenovsk 2010 9 5.993 S 11.8 AC 30.0L 110 1 1 LOO Genk 2010 9 5.869 S 9.5 TK 8.0B 15 8 0/ DIJ Burlage 2010 9 5.865 S 9.4 TK 8.0B 15 9 1/ BOU Burlage, Germany 2010 9 5.84 V 11.0 TK 10.9R 3.7 QVA Borrevannet, Horten 2010 9 4.86 S 9.8 TK 10.0B 25 6 3 GON Alto del Castro, León 2010 9 4.76 S 10.5 TK 13.0L 65 5 5 SID Korenovsk 2010 9 3.955 S 9.5:TK 15.6L 24 9 2 BOU Sint Annen (Large diffuse object, involved with several 11th magn. stars.) 2010 9 3.04 V 10.5 TK 22.0T 5.9 NOV Kondopoga 2010 9 2.96 V 10.4 TK 11.4L 2.8 NOV Kondopoga 2010 8 31.95 V 11.5 TK 22.0T 2.3 NOV Kondopoga 2010 8 31.85 V 11.1 TK 10.9R 4.7 QVA Borrevannet, Horten (Additional CCD-V images from 0.46m Ritchey-Chrétien telescope at same UT shows an elongation : p.a. 210 deg.) 2010 8 30.92 V 11.2 TK 11.4L 2.9 NOV Kondopoga 2010 8 20.94 M 13.2 TK 25.4Y 203 0.8 5 NOV Sheltozero 2010 8 20.18 S 12.3 TK 20.3T 133 1.3 5/ GON Pandorado, León 2010 8 18.88 M 13.3 TK 25.4Y 203 0.8 3 SMI Sheltozero 2010 8 16.88 M 12.8 TK 61.5Y 178 1.2 4 NOV Sheltozero 2010 8 16.03 S 12.3 HS 40.7L 58 2.0 3 BIV Valdrôme 2010 8 15.90 M 13.0:TK 25.4Y 203 0.7 5 NOV Sheltozero 2010 8 13.00 S 12.3 HS 40.7L 58 1.8 3 BIV Valdrôme 2010 8 11.08 S 12.3 HS 40.7L 135 1.8 3 BIV Valdrôme 2010 8 10.12 S 12.7 HS 40.7L 135 1.5 4 BIV Valdrôme 2010 8 8.91 S 12.8 HS 40.7L 135 1.5 2 BIV Valdrôme 2010 8 7.99 S 13.2 HS 40.7L 135 1.4 3 BIV Valdrôme 2010 8 7.57 S 13.4 TA 40.0L 257 0.6 6 YOS Kita-karuizawa, Gunma (See it again since 1998. This comet will be very bright this autumn. I was surprised that it is already bright and visible, because few visual observations have been recently. Well condensed, not tiny.) 2010 8 7.11 S 12.9 HS 40.7L 135 1.6 2 BIV Valdrôme 2010 8 6.97 S 13.4 HS 40.7L 135 1.0 2 BIV Valdrôme 2010 8 6.96 S 13.2 HN 20.3T 133 0.6 6 GON Alto del Castro - Aralla, León (Mountain location, very clear sky. Nearby field stars checked in DSS. Motion checked during a 60-min period. Comparison stars taken from Henden photometry near Y Peg.) 2010 7 18.06 I[14.5 HS 20.3T 133 !0.2 GON Alto del Castro - Aralla, León (Comet not observed at the ephemeris position. Mountain location, very clear sky.)