|
* * * * * C/2006 M4 (SWAN) * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2006 12 23.37 S 9.4 TJ 40.0L 36 5 3 YOS Kita-karuizawa, Gunma (It is two months since my last observation. The comet faded, but it is still bright, large and easy to see with 40-cm telescope. Large and diffuse.) 2006 12 21.78 S 9.3 TK 10.0B 25 3 4 0.1 20 GON Puerto de Aralla, León 2006 12 21.77 S 9.9 TK 20.3T 77 3 5 0.1 20 GON Puerto de Aralla, León (Zodiacal light.) 2006 12 20.78 S 9.5 TK 10.0B 25 3 4 0.1 15 GON Camposagrado, León 2006 12 20.77 S 10.2 TK 20.3T 77 3 5 0.1 15 GON Camposagrado, León (Zodiacal light.) 2006 12 16.753 S 9.3 TK 15.6L 29 4 3 BOU Bedum 2006 12 14.78 S 9.1 TK 10.0B 25 3 4 0.1 20 GON Alto del Castro - Aralla, León 2006 12 14.77 S 9.5 TK 20.3T 77 3 5 0.1 20 GON Alto del Castro - Aralla, León (Mountain location, very clear sky. Zodiacal light.) 2006 12 13.78 S 8.9 TK 10.0B 25 4 4 0.1 20 GON Alto del Castro - Aralla, León 2006 12 10.77 S 8.9 TK 10.0B 25 4 4 GON Sierra de Linares, Proaza, Asturias 2006 11 26.77 S 8.3:TK 5.0B 7 5 3 BIV Versailles 2006 11 26.767 M 7.9 TK 15.6L 24 5 4 DIJ Bedum 2006 11 26.765 M 7.8 TK 15.6L 24 5 4 BOU Bedum 2006 11 26.76 S 8.4 TK 25.6L 42 3.5 3 BIV Versailles 2006 11 26.72 S 8.4 TK 6.0B 20 4 4 GIL Noordwijk aan Zee 2006 11 26.718 S 8.6 TK 25.0L 53 3 3 LOO Genk 2006 11 25.80 S 7.5 TK 5.0B 7 7 5 GON Collada de la Cobertoria, Lena, Asturias 2006 11 25.78 S 7.7 TK 10.0B 25 6 5 GON Collada de la Cobertoria, Lena, Asturias 2006 11 23.81 S 7.9:TK 5.0B 7 5 3 BIV Versailles 2006 11 23.80 S 8.2 TK 25.6L 42 4.5 2 BIV Versailles 2006 11 23.756 M 7.6 TK 8.0B 15 6 4/ BOU Noordwolde 2006 11 22.42 S 7.5 AA 10.0B 25 3 SEA Cowra, NSW (Very low in the twilight.) 2006 11 19.810 M 7.3 TK 15.6L 29 5.5 6 BOU Sint Annen 2006 11 19.809 M 7.2 TK 15.6L 29 5.5 5 DIJ Sint Annen 2006 11 19.76 S 8.1 TK 25.6L 42 3.5 3 BIV Versailles 2006 11 19.76 S 8.0 TK 5.0B 7 6 3 BIV Versailles 2006 11 19.75 S 7.3 TK 6.0B 20 6.5 5 GIL Noordwijk aan Zee 2006 11 18.801 M 7.4 TK 15.6L 24 4.5 5 DIJ Sint Annen 2006 11 18.798 M 7.3 TK 15.6L 24 5.5 6 BOU Sint Annen 2006 11 17.799 M 7.4 TK 15.6L 24 4.5 5 DIJ Sint Annen 2006 11 17.797 M 7.2 TK 15.6L 24 5 6 BOU Sint Annen 2006 11 17.79 S 8.0 HV 25.6L 42 4.5 4 BIV Versailles 2006 11 17.78 S 7.3 TK 6.0B 20 7 6 GIL Noordwijk aan Zee 2006 11 17.77 S 7.8 HV 5.0B 7 5 4 BIV Versailles 2006 11 17.733 S 7.6 TK 10.0B 14 4 4 LOO Genk 2006 11 16.82 M 7.0 TK 5.0B 7 7 6 GON Alto de Bustellán, Tineo, Asturias 2006 11 15.797 S 7.5 TK 8.0B 15 4 COM Roden 2006 11 15.77 S 7.6 HV 25.6L 42 4.0 3 BIV Versailles 2006 11 15.76 S 7.4 HV 5.0B 7 8 3 BIV Versailles 2006 11 15.742 S 7.0 TK 10.0B 14 5 4 LOO Genk 2006 11 13.80 M 7.2 TK 10.0B 25 6 6 0.3 5 GON Alto del Castro - Aralla, León (Dust tail 0.3-deg in p.a. 5 deg. Very faint ion tail.) 2006 11 13.79 M 6.9 TK 5.0B 7 6 7 GON Alto del Castro - Aralla, León 2006 11 13.78 S 6.9 TK 5.0B 10 7 6 GIL Noordwijk aan Zee 2006 11 13.751 M 7.0 TK 8.0B 15 5 5 BOU Zuidwolde 2006 11 13.735 S 6.8 TK 8.0B 15 & 7 5 COM Roden (Short, straight tail ~0.5 deg. in 30.5-cmT at 56x; good conditions.) 2006 11 12.81 S 6.6:HV 5.0B 7 10 3 BIV Versailles 2006 11 11.820 S 6.4 TK 5.0B 10 & 5 5 COM Roden 2006 11 11.818 M 6.8 TK 8.0B 15 5.5 5 BOU Zuidwolde 2006 11 9.860 M 6.6 TK 6.0B 15 7 5/ DIJ Garmerwolde 2006 11 9.82 M 6.7 TK 10.0B 25 7 6 0.3 50 GON Alto del Castro - Aralla, León (Ion tail 0.3-deg in p.a. 50 deg, broader dust tail 0.3-deg in p.a. 5 deg. Ion tail appears shorter and fainter than yesterday's observation.) 2006 11 9.81 M 6.6 TK 5.0B 7 7 7 GON Alto del Castro - Aralla, León 2006 11 9.779 M 6.4 TK 5.0B 10 & 5 5/ COM Roden 2006 11 9.77 S 7.2 HV 25.6L 42 5 4 BIV Versailles 2006 11 9.75 S 6.9 HV 5.0B 7 10 3 BIV Versailles 2006 11 8.80 M 6.6 TK 10.0B 25 6 6 0.8 50 GON Tenebredo - Santo Adriano, Asturias (Ion tail 0.8-deg in p.a. 50 deg, broader dust tail 0.1-deg in p.a. 0 deg.) 2006 11 8.79 M 6.4 TK 5.0B 7 6 7 GON Tenebredo - Santo Adriano, Asturias 2006 11 5.78 S 6.6 HV 25.6L 42 5 5 BIV Versailles 2006 11 5.76 S 6.2 HV 5.0B 7 12 4 BIV Versailles 2006 11 4.75 S 6.1 HV 5.0B 7 15 4 BIV Versailles 2006 11 3.758 M 5.9 TK 8.0B 15 6 6 BOU Groningen 2006 11 2.857 M 5.7 TK 6.0B 15 9 6 DIJ Noorddijk 2006 11 2.817 M 5.9 TK 8.0B 15 6 6/ BOU Groningen 2006 11 2.81 S 6.4 HV 25.6L 42 4.5 5 BIV Versailles 2006 11 2.78 S 6.1 HV 5.0B 7 8 5 BIV Versailles 2006 11 2.74 S 5.7 TK 5.0B 10 9 6 GIL Noordwijk aan Zee 2006 11 1.77 S 5.8 HV 5.0B 7 10 6 0.5 45 BIV Ablis 2006 11 1.753 M 5.7 TK 5.0B 7 & 6 6 BOU Groningen (Moonlight, but comet well visible in very transparant sky.) 2006 11 1.75 S 5.4 TK 5.0B 10 11 7 GIL Noordwijk aan Zee 2006 10 31.86 S 5.6 HV 5.0B 7 12 5 BIV Versailles 2006 10 31.85 S 5.5 AC 6.0B 20 8 6 0.5 45 RES Szamotuly-Galowo 2006 10 31.823 M 5.4 TK 5.0B 10 & 7 7 COM Roden (Moonlight, but comet very easy in instrument.) 2006 10 31.39 S 5.3 YG 2.4B 10 13 7 YOS Kita-karuizawa, Gunma 2006 10 31.39 S 5.3 YG 7.0R 10 14 7 YOS Kita-karuizawa, Gunma (My first observation after the outburst. They say it reached up to 4th mag, but it has already faded down to 5th mag. It was not excellent for me due to the hazy sky and moonlight. I could not see it with naked eyes. I could not see the tail. But the comet became much larger than my previous observation in early October. The central condensation is still strong with a 0.40-m reflector. It was located near by Hercules Cluster M13. The comet's appearance was similar to M13. But the condensation was somewhat stronger than M13, and the comet was much brighter than M13. Comet 73P/Schwassmann-Wachmann 3 has passed the same area just half a year ago. It was impressive that I observed another naked eye comet in the same area.) 2006 10 30.85 S 5.6:HV 5.0B 7 12 5 BIV Versailles 2006 10 29.816 M 5.2 TK 5.0B 7 8 7 0.8 42 BOU Zuidwolde 2006 10 29.80 S 5.3 AC 6.0B 20 9 7 3.5 35 RES Szamotuly-Galowo 2006 10 29.78 S 5.3 HV 5.0B 7 16 6 3.0 45 BIV Poigny-la-Forêt 2006 10 29.77 B 5.2 HV 0.0E 1 15 5 BIV Poigny-la-Forêt 2006 10 29.768 M 5.1 TK 6.0B 15 6 6/ 1.0 47 DIJ Garmerwolde 2006 10 27.938 M 4.9 TK 6.0B 15 6 7 2.6 38 DIJ Wieringerwerf 2006 10 27.84 M 5.2 TK 5.0B 7 8 8 5.5 35 GON Sierra de Linares, Proaza, Asturias 2006 10 27.83 I 4.8 TK 0.0E 1 8 8 5.0 35 GON Sierra de Linares, Proaza, Asturias 2006 10 27.79 S 4.9 HV 5.0B 7 15 5 3.5 40 BIV Poigny-la-Forêt 2006 10 27.79 B 4.9 HV 0.0E 1 10 5 BIV Poigny-la-Forêt 2006 10 26.942 M 4.6 TK 6.0B 15 6 7/ 1.2 45 DIJ Noorddijk 2006 10 26.87 B 4.8 HV 5.0B 7 12 6 2.0 40 BIV Versailles 2006 10 26.81 I 4.9 TK 0.0E 1 8 8 4.0 35 GON Campomanes - Lena, Asturias 2006 10 26.80 M 5.2 TK 5.0B 7 8 8 4.5 35 GON Campomanes - Lena, Asturias 2006 10 25.81 B 4.3 HV 5.0B 7 15 7 2.6 33 BIV Ablis 2006 10 25.81 B 4.4 HV 0.0E 1 10 6 BIV Ablis 2006 10 25.81 M 4.3 TK 5.0B 7 10 8 3.0 30 GON Alto del Cordal - Riosa, Asturias 2006 10 25.80 I 4.2 TK 0.0E 1 10 8 GON Alto del Cordal - Riosa, Asturias (Mountain location, very clear sky.) 2006 10 25.79 S 4.0 TI 0.0E 1 &10 7 RES Szamotuly-Galowo 2006 10 25.79 S 4.1 AC 6.0B 20 11 7 2.5 35 RES Szamotuly-Galowo 2006 10 25.74 B 4.5 TK 7.0R 20 10 7 1.0 35 GRA Fjellhamar 2006 10 25.74 M 4.5 TK 5.0B 7 10 6/ 1.0 GRA Fjellhamar 2006 10 25.74 I 4.4 TK 0.7E 1 GRA Fjellhamar (With naked eye, the coma was fairly easily seen and appeared as a diffuse star. In 7x50B, the comet was much brighter than M13, tail was faint. In 0.07-mR at 20x, the coma was diffuse and with a blue-green hue and an apparently stellar central condensation at mag. 8.1 [ref. TK], tail was narrow and straight.) 2006 10 25.72 S 4.4 TK 0.7E 1 8 8 DAH Fjellhamar 2006 10 25.08 M 4.4 TK 5.0B 7 9 6/ GRA Fjellhamar (Observed near lower culmination at altitude 6.5 deg.) 2006 10 24.844 M 4.3 TK 5.0B 7 9 8 1.5 35 BOU Sint Annen (Comet obviously in outburst. In 31-cmJ at 72x, coma has a distinct greenish hue. Strong near-stellar condensation of magnitude 10-11. Gastail much brighter and longer than yesterday. Short dusttail faintly visible as a stubby extension of the coma west of the gastail.) 2006 10 24.84 S 4.5 TK 0.7E 1 6 8 DAH Fjellhamar (Fairly easy naked eye object. In 9x63B, the coma had a distinct bluish color.) 2006 10 24.82 I 4.3 TK 0.0E 1 10 8 GON Armada - Sierra del Aramo, Asturias 2006 10 24.81 M 4.5 TK 5.0B 7 8 8 1.8 25 GON Armada - Sierra del Aramo, Asturias (Mountain location, very clear sky. The comet is obviously in outburst.) 2006 10 24.79 S 4.6 HV 25.6L 42 7.0 7 0.5 30 BIV Versailles 2006 10 24.78 B 4.4 HV 5.0B 7 12 7 1.0 30 BIV Versailles 2006 10 24.771 B 4.4 TK 5.0B 7 8 8 BOU Bedum 2006 10 24.744 S 4.3 TK 5.0B 10 6 5 LOO Genk 2006 10 24.743 I 4.4 TK 0.0E 1 9 DIJ Garmerwolde 2006 10 24.739 M 4.7 TK 6.0B 15 12 8 1.9 30 DIJ Garmerwolde 2006 10 23.792 M 5.7 TK 5.0B 7 4 8 DIJ Garmerwolde 2006 10 23.790 M 5.8 TK 6.0B 15 6 7 DIJ Garmerwolde 2006 10 23.750 M 5.7 TK 5.0B 10 & 7 8/ COM Roden (Small, bright central condensation; elliptical coma and short faint dust(?)tail in 30.5T at 56x; very good conditions.) 2006 10 23.747 M 5.9 TK 8.0B 15 6 7 0.4 25 BOU Zuidwolde 2006 10 21.80 S 6.1 HV 25.6L 42 5.0 6 BIV Versailles 2006 10 21.79 S 5.9 HV 5.0B 7 8 6 BIV Versailles 2006 10 20.80 M 6.0 TK 10.0B 25 8 7 1.0 20 GON Collada del Fresno - Sierra del Aramo, Asturias 2006 10 20.79 M 5.9 TK 5.0B 7 10 7 GON Collada del Fresno - Sierra del Aramo, Asturias 2006 10 19.750 M 5.9 TK 6.0B 15 5 7 DIJ Garmerwolde 2006 10 19.14 S 5.9 AC 6.0B 20 5 6 RES Szamotuly-Galowo 2006 10 17.86 S 5.6 AC 6.0B 20 9 6/ 0.5 355 RES Szamotuly-Galowo 2006 10 17.175 M 5.9 TK 5.0B 7 4 8 DIJ Garmerwolde 2006 10 17.14 S 5.6 AC 6.0B 20 8 6 0.7 0 RES Szamotuly-Galowo 2006 10 16.80 S 6.2 HV 25.6L 42 5.0 7 1.0 20 BIV Ablis 2006 10 16.792 B 6.0 TK 5.0B 7 8 BOU Zuidwolde 2006 10 16.79 B 6.1 HV 5.0B 7 5 7 1.0 20 BIV Ablis 2006 10 16.788 M 6.1 TK 6.0B 15 5 6/ DIJ Zuidwolde 2006 10 16.787 M 5.9 TK 8.0B 15 7 7 0.5 13 BOU Zuidwolde 2006 10 16.775 S 6.0 TK 8.0B 15 &10 7/ COM Roden 2006 10 16.757 S 5.9 TK 10.0B 14 5 5 0.5 LOO Genk 2006 10 15.777 S 5.9 TK 10.0B 14 3 6 LOO Genk 2006 10 14.81 I 6.1 TK 0.7E 1 GRA Hågår Obs., Eina 2006 10 14.81 M 6.2 TK 5.0B 7 7 6 GRA Hågår Obs., Eina (Faintly seen with naked eye. With 40.6-cmT at 73x, the coma was blue-green and with a nearly stellar central condensation, a narrow and a more than 0.5 deg long tail was seen towards north.) 2006 10 14.81 I 5.8 TK 0.0E 1 8 8 GON Cueto Rosales - Riello, León 2006 10 14.767 S 5.9 TK 10.0B 14 3 7 LOO Genk 2006 10 12.84 M 6.0 TK 10.0B 25 7 7 0.9 5 GON Sierra del Aramo, Asturias 2006 10 12.83 M 5.9 TK 5.0B 7 7 7 GON Sierra del Aramo, Asturias 2006 10 12.78 S 5.9 TK 5.0B 10 9 7 GIL Noordwijk aan Zee 2006 10 11.768 M 5.8 TK 6.0B 15 4 7 DIJ Noorddijk 2006 10 11.765 M 5.7 TK 8.0B 15 6 7 BOU Zuidwolde 2006 10 10.765 S 6.1 TK 10.0B 14 1.5 8 LOO Genk 2006 10 9.82 B 6.1 TJ 7.0R 10 8 YOS Kita-karuizawa, Gunma 2006 10 9.82 B 6.3 TJ 40.0L 36 5.5 7/ YOS Kita-karuizawa, Gunma (I could see it both in the evening and morning. The area around the comet was covered by thin clouds in the evening, so it was impossible to estimate the magnitude. Although the comet was lower in the morning, I could observe it due to the fine sky. The comet was very similar to itself in September.) 2006 10 8.758 S 6.2 TK 10.0B 14 1 7 LOO Genk (Moonlight.) 2006 10 7.85 M 5.6 TK 5.0B 7 7 6/ GRA Fjellhamar 2006 10 7.772 B 5.7 TK 8.0B 15 7/ BOU Zuidwolde (Moonlight.) 2006 10 6.14 S 5.4 AC 6.0B 20 7.5 7/ 0.5 355 RES Szamotuly-Galowo (Moonlight.) 2006 10 5.79 M 5.4 TK 5.0B 7 8 6/ GRA Blindern, Oslo 2006 10 5.79 S 5.5 AC 6.0B 20 6.5 7 RES Szamotuly-Galowo (Moonlight.) 2006 10 5.21 S 5.3 TK 25.6L 42 5.0 7 0.5 352 BIV Versailles 2006 10 5.19 B 5.2 TK 5.0B 7 4 7 0.6 357 BIV Versailles 2006 10 5.154 M 5.6 TK 6.0B 15 5.5 8 1.3 355 DIJ Noorddijk (Comet also faintly visible NE.) 2006 10 4.79 S 5.3 TK 25.6L 42 5.0 7 0.25 355 BIV Versailles 2006 10 4.78 S 5.1 TK 5.0B 7 4 7 BIV Versailles 2006 10 3.788 M 6.0 TK 6.0B 15 3 8/ DIJ Noorddijk (Moonlight. Some cloud interference.) 2006 10 1.20 M 5.7 TK 5.0B 7 6 7 0.8 350 GON Buelna - Llanes, Asturias 2006 10 1.153 M 6.3 TK 5.0B 7 15 8/ DIJ Noorddijk 2006 10 1.147 M 6.4 TK 6.0B 15 10 8/ 0.9 358 DIJ Noorddijk 2006 9 30.783 M 6.1 TK 8.0B 15 5 7 0.8 345 BOU Sint Annen 2006 9 30.20 S 6.1 TK 25.6L 42 3.0 7 0.25 350 BIV Versailles 2006 9 30.19 S 5.7 TK 5.0B 7 5 7 BIV Versailles 2006 9 27.81 M 6.4 TJ 40.0L 36 6 7/ YOS Kita-karuizawa, Gunma (Because there was a cluster of trees in the direction of the comet, I had to wait for a while after the morning twilight began in order to observe the comet with my 40-cm telescope. So the background sky became somewhat bright.) 2006 9 27.80 B 6.3 TJ 5.0R 10 8 7/ YOS Kita-karuizawa, Gunma (I was surprised because the comet was very bright! Very strongly condensed. However, it looked cometary with a small guiding telescope. So it must have a large coma.) 2006 9 26.20 M 6.4 TK 5.0B 7 5 7 0.5 345 GON Puerto de Aralla, León 2006 9 26.19 M 6.5 TK 10.0B 25 5 7 1.2 345 GON Puerto de Aralla, León (Mountain location, very clear sky. Zodiacal light. Altitude: 10 deg.) 2006 9 22.149 M 6.9 TK 15.6L 29 4 7/ BOU Sint Annen (At 63x faint tail visible, 10' long in p.a. 344 deg.) 2006 9 22.147 M 6.8 TK 15.6L 29 4.0 7 DIJ Sint Annen (At 63x faint tail visible, 16' long in p.a. 347 deg.) 2006 9 21.149 M 6.9 TK 15.6L 29 3.7 8 DIJ Sint Annen 2006 9 21.146 M 6.9 TK 15.6L 29 3.5 7/ BOU Sint Annen (At 63x faint tail glimpsed, about 9' long in p.a. 340 deg.) 2006 9 20.139 S 7.0 TK 10.0B 14 3 8 LOO Genk 2006 9 19.19 M 7.1 TK 10.0B 25 4 7 GON Cueto Rosales - Riello, León (Mountain location. Comparison stars at the same low altitude [7 deg.] as the comet.) 2006 9 19.147 M 7.0 TK 15.6L 29 2.5 7 BOU Sint Annen 2006 7 21.37 10.5 10.0B 25 3 4 MAT Linville, Queensland (Very low elevation, twilight interference.) 2006 7 20.37 11.0: 10.0B 25 2 3 MAT Linville, Queensland (Very low elevation, twilight interference.) 2006 7 20.35 S 9.6 GA 25.4L 71 3.0 SEA Cowra, NSW (Easily visible despite low altitude and twilight. Enhanced through Swan Band Filter.)