|
* * * * * 398P/Boattini * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2021 2 13.958 M 13.6 AQ 31.0J 143 0.6 5 BOU Burlage, Germany 2021 2 13.953 S 13.5 AQ 31.0J 143 1 3 DIJ Burlage 2021 1 23.63 M 12.5 AQ 40.0L 59 0.8 3/ WYA Walcha, NSW (Diffuse, opaque centre. Altitude 15.6°.) 2021 1 16.82 S 11.2 TK 20.3T 100 4 2 GON Collada de la Cobertoria, Asturias 2021 1 14.002 S 11.9 AQ 15.5L 72 1.2 3 DIJ Burlage 2021 1 13.80 S 10.8 TK 20.3T 133 4 2 GON Collada de la Cobertoria, Asturias 2021 1 13.48 M 13.0 AQ 25.0L 125 0.6 5/ WYA Walcha, NSW (Close to stars. Opaque central condensation, semi-transparent outer coma. Faint stellar pseudo-nucleus visible in good seeing.) 2021 1 11.47 M 12.9 AQ 25.0L 125 0.9 5/ WYA Walcha, NSW (Coma small, close to stars. Stellar pseudo-nucleus visible in periods of good seeing.) 2021 1 10.00 S 11.7 AU 22.0L 160 1 4 GOI Araçatuba 2021 1 7.85 S 11.2 TK 20.3T 100 4 2 GON Matadeón de los Oteros, León 2021 1 5.45 M 12.5 AQ 25.0L 74 1.4 4/ WYA Walcha, NSW (Diffuse outer coma, moderately condensed centre.) 2021 1 4.08 S 11.7 AU 22.0L 160 1 4/ GOI Araçatuba 2020 12 16.85 S 11.0 TK 20.3T 77 4 2 GON Sierra de Tineo, Asturias (Faint outer coma.) 2020 12 14.51 S 12.4 AU 40.0L 144 1.4 4 YOS Mt. Hanadate, Ibaraki (Well visible.) 2020 12 9.46 M 12.8 AQ 25.0L 74 1.3 5/ WYA Walcha, NSW (Diffuse coma, opaque towards centre, faint pseudo-nucleus visible in good seeing.) 2020 12 8.47 M 12.7 AQ 25.0L 74 1.2 5 WYA Walcha, NSW (Dims considerably in Swan Band filter. Centre opaque and almost stellar.) 2020 11 21.54 S 13.5 AU 40.0L 257 0.5 4 YOS Mt. Hanadate, Ibaraki (Well visible unexpectedly.) 2020 11 17.96 S 13.2 AQ 20.3T 133 1.5 5 GON Collado del Fresno - Aramo, Asturias 2020 11 15.68 M 13.9 AQ 40.0L 182 0.7 5/ WYA Walcha, NSW (Close to bright star but resolvable. Coma shows an opaque centre and faint stellar pseudo-nucleus visible in periods of good seeing. Diffuse outer coma.) 2020 11 14.48 M 13.9 AQ 40.0L 182 1.0 5/ WYA Walcha, NSW (Diffuse outer coma, small opaque inner coma with faint stellar pseudo-nucleus visible in good seeing.) 2020 10 20.79 S[13.3 AU 40.0L 257 !0.4 YOS Mt. Tsukuba, Ibaraki (Not visible still now.)
2009 12 12.08 S 11.8 TK 20.3T 77 2.5 3/ 0.1 290 GON Alto del Castro, León 2009 11 24.15 S 12.8 HN 20.3T 160 1.3 5 GON Alto del Castro, León (Elongated coma. Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near AK Cnc.) 2009 11 20.152 S 13.4 TA 31.0J 155 0.6 4/ BOU Sint Annen 2009 11 18.15 S 13.3 HN 20.3T 160 0.8 5 GON Alto del Castro, León (Elongated coma. Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near AK Cnc. Mountain location, very clear sky.) 2009 10 26.12 S 13.8 HN 20.3T 206 0.3 6 GON Alto del Castro, León (Nearby field stars checked in DSS. Comparison stars taken from Henden photometry near V650 Ori. Motion checked over a 20-min period.)