|
* * * * * C/2020 F8 (SWAN) * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2020 5 28.95 S 8.0:TK 20.0L 80 & 6 2 SCH Eerbeek (Twilight. Very difficult/poor observation. Comet at altitude 9.5°.) 2020 5 27.988 S 7.9 TA 15.5L 29 6 1 DIJ Burlage 2020 5 27.981 S 8.3 TA 25.4J 47 4 1/ BOU Sint Annen (Faint elongated object of about 4x9', in a roughly N-S direction. Comet altitude 9.9° with Sun at -15.2°.) 2020 05 27.91 S 6.9 TK 20.3T 77 5 2 0.3 350 GON Puerto Ventana, Asturias (Elongated remnant-like morphology. Mag. 10.6 [GSC] star in coma. Observation made under better conditions, from a higher mountain location, than in my previous May 26.12 observation. End of astronomical twilight. Altitude 8°.) 2020 5 26.978 S 7.9 TA 15.6L 29 5 1/ BOU Sint Annen (Very faint, slightly elongated object, in a roughly N-S direction. Comet altitude 9.8° with Sun at -15.4°.) 2020 5 26.966 S 7.4 TK 8.0B 15 6 1 DIJ Burlage 2020 05 26.12 S 6.8 TK 20.3T 77 4 3 0.2 350 GON Renorios - Bello - Aller, Asturias (Beginning of astronomical twilight. Altitude 7°.) 2020 5 25.93 S 7.6 TK 20.0L 42 & 5 2 SCH Eerbeek (Twilight.) 2020 5 25.917 S 7.9 TA 15.5L 29 7.5 2 DIJ Burlage 2020 5 25.91 S 8.5 TK 40.7L 72 4 1 0.15 330 BIV 2020 5 21.913 S 6.3 TK 8.0B 15 8 3/ DIJ Burlage 2020 5 21.09 S 7.4 HV 40.7L 72 4 3 BIV 2020 5 20.913 S 6.1 TK 8.0B 15 10 4 DIJ Burlage 2020 5 19.10 S 6.6 HV 5.0B 7 4 5 BIV 2020 5 19.09 S 6.6 HV 40.7L 72 4 2 BIV 2020 5 18.13 S 5.7 TK 10.0B 25 6 5 0.2 270 GON Puerto de la Cubilla, Asturias (Altitude 6°.) 2020 5 18.11 S 5.8 TK 20.3T 77 5 5 0.2 270 GON Puerto de la Cubilla, Asturias 2020 5 17.11 S 7.6:HV 40.7L 72 3.5 4 BIV 2020 5 17.068 S 6.2 TK 8.0B 15 8 4 DIJ Burlage 2020 5 17.058 S 6.2:YG 8.0B 15 4 BOU Sint Annen (Comet very faintly visible in bright twilight. Altitude 5.4° with Sun at -13.2°.) 2020 5 15.087 M 5.6 TK 8.0B 15 12 6 DIJ Burlage 2020 5 14.086 M 6.0:TK 8.0B 15 6 DIJ Burlage (Comet altitude 5° with Sun at -10.5°.) 2020 5 13.83 M 5.5 TK 8.0R 36 3 5 CAM Katherine, NT 2020 5 12.36 sM 5.8 HD 5.0B 7 8 6 GOI Araçatuba (Moonlight. Comet altitude 13°.) 2020 5 11.79 M 5.7 TK 5.0R 10 8.5 6 WYA Walcha, NSW (Moonlight. Low altitude 7.6°. Slight interference by zodiacal light.) 2020 5 11.36 M 5.7 HD 5.0B 7 7 7 GOI Araçatuba (Moonlight. Nautical twilight, comet and comparison stars at 15° altitude.) 2020 5 10.82 M 5.8 TK 8.0R 16 4 6 CAM Katherine, NT 2020 5 9.81 M 5.3 TK 8.0B 20 5 5 CAM Katherine, NT 2020 5 9.35 sM 5.7 HD 5.0B 7 8 6 GOI Araçatuba (Moonlight.) 2020 5 8.35 M 5.5 HD 5.0B 7 8 6 GOI Araçatuba (Moonlight.) 2020 5 6.82 M 5.6 TK 8.0B 20 5 6 CAM Katherine, NT 2020 5 6.79 M 5.5 TK 5.0R 10 5 6 40m 235 WYA Walcha, NSW (Moonlight, 99% illuminated, 6.2° above Western horizon. Faint tail visible. Coma diffuse and opaque with a faint stellar pseudo-nucleus. Localised fog conditions but clear in vicinity of comet. Comet altitude 23.4°.) 2020 5 5.81 I 5.5 TK 0.7E 1 CAM Katherine, NT 2020 5 5.81 M 5.5 TK 8.0B 20 6 6 CAM Katherine, NT 2020 5 5.35 M 5.1 HD 5.0B 7 10 6 1.0 240 GOI Araçatuba 2020 5 4.82 M 5.5 TK 8.0B 20 8 6 CAM Katherine, NT 2020 5 4.79 M 5.7 TK 5.0R 10 8.5 5/ 1.0 233 WYA Walcha, NSW (Faint tail visible using averted vision. Diffuse and opaque inner coma, pale aqua-blue colour. Faint stellar pseudo-nucleus visible. Next to ι Ceti, 18’ away. Altitude 25°.) 2020 5 4.77 B 5.3 AA 10.0B 25 8 5 1.5 225 SEA Cowra, NSW 2020 5 4.36 M 5.0 HD 5.0B 7 10 6/ GOI Araçatuba 2020 5 3.75 M 5.6 TK 5.0R 10 9 7 1.8 230 WYA Walcha, NSW (Faint tail visible using averted vision. Coma opaque and aqua-blue in colour with faint thin transparent outer edge. Altitude 17.2°.) 2020 5 3.34 I 4.8 TK 0.0E 1 8 GOI Araçatuba 2020 5 3.33 M 4.9 TK 5.0B 7 10 6/ 40m 240 GOI Araçatuba 2020 5 2.83 I 4.8 TK 0.7E 1 CAM Katherine, NT 2020 5 2.83 M 5.0 TK 8.0R 12 10 6 CAM Katherine, NT 2020 5 1.84 I 5.0 TK 0.7E 1 CAM Katherine, NT 2020 5 1.84 M 5.0 TK 8.0R 12 10 6 CAM Katherine, NT 2020 5 1.35 I 4.8 HD 0.0E 1 8 GOI Araçatuba 2020 5 1.34 M 4.9 HD 5.0B 7 10 6/ 40m 230 GOI Araçatuba 2020 4 29.83 I 5.0 TK 0.7E 1 CAM Katherine, NT 2020 4 29.83 M 5.0 TK 8.0R 16 8 6/ 0.6 235 CAM Katherine, NT 2020 4 29.75 M 5.4 TK 5.0R 10 8.5 6 45m 223 WYA Walcha, NSW (Faint tail visible. Coma centre opaque, stellar pseudo-nucleus, thin transparent outer coma edge. Visible naked eye, estimated magnitude 5.2.) 2020 4 29.31 M 5.6 HD 5.0B 7 9 6 GOI Araçatuba 2020 4 28.82 I 5.8 TK 0.7E 1 CAM Katherine, NT 2020 4 28.82 M 5.8 TK 8.0B 20 8 6 0.5 CAM Katherine, NT 2020 4 28.76 M 5.6 TK 5.0R 10 7 5/ 35m 223 WYA Walcha, NSW (Pale aqua-blue coma, centre opaque, hazy edges with faint tail visible. Through 25.0L at 40x I can trace the faint and narrow tail for 1.2° in p.a. 226 deg. Faintly detectable with naked eye using averted vision.) 2020 4 28.31 M 5.9 HD 5.0B 7 9 6 GOI Araçatuba (Quick brightness gain and increased degree of condensation.) 2020 4 27.82 I 6.0 TK 0.7E 1 CAM Katherine, NT 2020 4 27.82 M 6.2 TK 8.0R 16 8 6 0.5 CAM Katherine, NT 2020 4 27.35 M 6.3 HD 5.0B 7 8 5 GOI Araçatuba 2020 4 26.82 M 6.5 TK 8.0R 16 8 6 0.35 210 CAM Katherine, NT 2020 4 26.35 M 6.6 TK 5.0B 7 8 5 GOI Araçatuba 2020 4 26.34 M 6.7 TK 10.0B 20 7 6/ GOI Araçatuba 2020 4 25.82 M 7.1 TK 8.0R 16 5 6 0.3 210 CAM Katherine, NT 2020 4 25.75 M 7.2 TK 5.0R 10 10 5 WYA Walcha, NSW (Coma diffuse with transparent outer edge, inner coma opaque and almost appears stellar. No tail visible. Through 25.0L at 40x there is a faint narrow extension from the inner coma to the NNW approximately about 1.5’ in length from the centre, p.a. 353 deg. approx. A faint tail is traced for 22’ in length in p.a. 220 deg. approximately.) 2020 4 24.82 M 7.2 TK 8.0B 20 4 5/ CAM Katherine, NT 2020 4 24.75 M 7.3 TK 5.0R 10 9 5 WYA Walcha, NSW (Coma diffuse and opaque, almost stellar at centre. Through the 25.0L at 40x there is a faint tail traceable to 21’ in length in p.a. 219 deg. approximately, and about 4’ wide at its extremity. No obvious tail sighted using 10x50R for m1 measurement.) 2020 4 23.83 M 7.3 TK 8.0B 20 5 5/ CAM Katherine, NT 2020 4 23.35 S 7.3 TK 5.0B 7 7 4 GOI Araçatuba 2020 4 23.34 M 7.4 TK 10.0B 20 6 5 GOI Araçatuba 2020 4 22.82 M 7.3 TK 8.0R 16 4 5/ CAM Katherine, NT 2020 4 22.76 M 7.7 TK 25.0L 40 5.5 5/ 0.24 216 WYA Walcha, NSW (Faint tail visible. Pale-aqua blue in colour, opaque centre gradually fading to edges.) 2020 4 22.76 M 7.7 TK 5.0B 7 10 5 WYA Walcha, NSW (Well condensed and opaque centre, fading gradually to edges, no tail visible.) 2020 4 21.83 M 7.3 TK 8.0B 20 4 5/ CAM Katherine, NT 2020 4 21.79 M 7.6 TK 5.0R 10 9 5 WYA Walcha, NSW (Coma diffuse and opaque with semi-transparent edge. Well condensed centre. No tail visible.) 2020 4 21.72 S 7.6 AA 10.0B 25 5 SEA Cowra, NSW (Enhanced with Swan Band filter.) 2020 4 20.82 M 7.6 TK 8.0R 16 5 6 CAM Katherine, NT 2020 4 20.35 S 7.4 TK 5.0B 7 7 4 GOI Araçatuba 2020 4 20.34 M 7.5 TK 10.0B 20 6 5 GOI Araçatuba 2020 4 19.82 M 7.6 TK 8.0R 16 5 6 CAM Katherine, NT 2020 4 18.82 M 7.6 TK 8.0R 16 4 5/ CAM Katherine, NT 2020 4 18.71 M 8.1 TK 25.0L 40 4.5 5 WYA Walcha, NSW (Moonlight. Enhances strongly in Swan Band filter. Coma elongated to the SW. Faint tail visible at 74x, traced to 18’ in length in p.a. 220 deg. Opaque inner coma fading to semi-transparent outer coma, pale aqua-blue in colour.) 2020 4 16.82 M 7.8 TK 8.0R 16 5 5 CAM Katherine, NT 2020 4 16.34 S 7.7 TK 5.0B 7 6 4 GOI Araçatuba (Moonlight.) 2020 4 16.33 M 7.8 TK 10.0B 20 5 5 GOI Araçatuba (Moonlight.) 2020 4 15.82 M 7.8 TK 8.0R 16 5 4/ CAM Katherine, NT 2020 4 14.82 M 7.8 TK 8.0R 16 5 4/ CAM Katherine, NT 2020 4 13.81 M 7.8 TK 8.0R 16 4 4 CAM Katherine, NT 2020 4 12.82 M 7.5:TK 8.0L 12 4 4 CAM Katherine, NT 2020 4 12.75 M 7.9 TK 25.0L 40 3.7 5/ WYA Walcha, NSW (Moonlight. Appears faintly stellar in good seeing. Well condensed opaque inner coma, gradually fading to semi-transparent outer coma.) 2020 4 11.73 M 8.0 TK 25.0L 40 4.0 5 WYA Walcha, NSW (Enhances strongly in Swan Band filter. Faint transparent outer coma, gradually brightening to an opaque inner coma with compact centre, not stellar. Visible in 7x50B as a faint smudge.)