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* * * * * P/2006 HR30 (Siding Spring) * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2007 2 12.86 I 14.4 HN 20.3T 160 9 GON Caña Valles - Macizo Occidental - Picos de Europa, Asturias (Mountain location, very clear sky. Motion checked during a 45-min period. Comparison stars taken from Henden photometry near PQ And.) 2007 1 15.88 I 14.1 AC 41.0L 72 9 RES Szamotuly-Galowo 2006 12 23.45 I 14.6 UO 40.0L 257 9 YOS Kita-karuizawa, Gunma 2006 12 22.50 I 14.6 UO 40.0L 257 9 YOS Kita-karuizawa, Gunma (Clearly visible with 40-cm telescope, but it is still faint as 14.6 mag. Hard to find it among so many faint stars in the Milky Way. Because the comet is faint, the GSC cannot help us enough. It looked completely same as nearby faint stars. so I decided it as DC=9. But it was too faint to determine if the object was exactly stellar with no cometary activity.) 2006 12 16.909 aI 14.1 HN 31.0J 143 9 DIJ Sint Annen 2006 12 16.909 aI 14.1 HN 31.0J 143 9 BOU Sint Annen 2006 12 14.87 I 14.2 HN 20.3T 206 9 GON Alto del Castro - Aralla, León (Mountain location, very clear sky. Faint stellar object. Motion evident after 50 minutes. Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near Y Peg.) 2006 10 31.42 I 14.6 UO 40.0L 257 9 YOS Kita-karuizawa, Gunma (I heard the tail became visible again by CCD. So, I confirmed the comet visually, but no rapid brightening occured. It was still fainter than 14.5 mag. Due to moonlight and hazy sky, it was hard to see faint stars. It was uncertain whether it was completely stellar or slightly cometary. After I came back home, I found there must be a 14.5 mag star near by the comet position. But in the DSS image, the 14.5 mag data is actually a blended magnitude of two faint stars. So I judged I observed the comet.) 2006 10 29.85 I 14.2 AC 41.0L 121 9 RES Szamotuly-Galowo 2006 10 25.81 I 14.2 AC 41.0L 121 9 RES Szamotuly-Galowo 2006 10 24.927 I 14.3 HN 31.0J 155 9 DIJ Sint Annen 2006 10 24.924 I 14.3 HN 31.0J 155 9 BOU Sint Annen (Stellar appearance. Object identified using chart made from DSS image. Slow motion evident after about 1h.) 2006 10 16.96 I 14.3 AC 41.0L 121 9 RES Szamotuly-Galowo 2006 10 16.892 I 13.6 HN 31.0J 155 9 DIJ Sint Annen 2006 10 16.890 I 14.2 HN 31.0J 155 9 BOU Sint Annen (Stellar appearance. Object unambiguously identified using chart made from DSS image.) 2006 9 27.63 I 14.9 UO 40.0L 257 9 YOS Kita-karuizawa, Gunma (I observed it and confirmed the motion in the evening. But I confirmed it again at midnight because the sky became clear with no clouds. The comet is still completely stellar and faint. It is moving among faint background stars in Cygnus, fainter than the limiting magnitude of the GSC. Maybe someone confused one of the background stars with the comet by mistake? Many people reported it as 14 mag recently. But the comet is definitely fainter, around 15 mag.) 2006 9 25.93 I 14.2 AC 41.0L 262 9 RES Szamotuly-Galowo (Stellar object. Motion evident after 45 minutes.) 2006 9 22.86 I 14.2 AC 41.0L 262 9 RES Szamotuly-Galowo (Stellar object. Motion evident after 45 minutes.) 2006 9 21.91 I 14.4 AC 41.0L 262 9 RES Szamotuly-Galowo (Stellar object. Motion evident after 45 minutes.) 2006 9 20.93 I 14.4 AC 41.0L 262 9 RES Szamotuly-Galowo (Stellar object. Motion evident after 45 minutes.) 2006 9 20.863 I 14.3 HN 31.0J 155 9 DIJ Sint Annen 2006 9 20.862 I 14.4 HN 31.0J 155 9 BOU Sint Annen (Faint stellar object, identified with chart made from DSS. Motion evident after some 20-30m.) 2006 9 17.88 I 14.4 AC 41.0L 262 9 RES Szamotuly-Galowo (Stellar object. Motion evident after 40 minutes.) 2006 9 13.91 I 14.5 AC 41.0L 262 9 RES Szamotuly-Galowo (Stellar object. Motion evident after 40 minutes.) 2006 8 22.65 I 15.5 UO 40.0L 257 9 YOS Kita-karuizawa, Gunma (Clearly visible with an excellent clear sky. It looks stellar, completely similar to background faint stars.) 2006 8 5.12 I[14.7 HN 20.3T 222 GON Cueto Rosales - Riello, León (Nearby field stars were checked previously in DSS. The comet was searched for during a 60-min period as a faint stellar object with motion, but was not unambiguously seen. Mountain location, very clear sky. Comparison stars taken from Henden photometry near Y Peg.)