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* * * * * C/2019 U6 (Lemmon) * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2020 10 15.81 S 11.4 AQ 20.3T 100 4 2 GON Pandorado, León 2020 9 21.48 S 13.0 TA 40.0L 144 1.2 2 YOS Mt. Hanadate, Ibaraki (Finally I could see it. It has already become very faint.) 2020 9 19.806 S 12.6 AQ 30.5T 102 2 0/ DIJ Burlage 2020 9 19.803 S 12.8 AQ 30.5T 102 1.3 1/ BOU Burlage, Germany 2020 9 9.87 S 10.3:TK 20.3T 77 6 2 GON Alto del Castro, León (Mag. 11.1 star in coma.) 2020 9 8.40 S 12.6 AQ 25.0L 74 1.8 2 WYA Walcha, NSW (Difficult, very diffuse. Altitude 15.8°.) 2020 9 7.89 S 10.2 TK 20.3T 77 5 2 GON Alto del Castro, León 2020 9 7.36 S 12.5 AQ 25.0L 74 1.2 2/ WYA Walcha, NSW (Difficult. Very diffuse.) 2020 8 24.40 S 10.9 AQ 25.0L 74 2.8 2/ WYA Walcha, NSW (Moonlight. Very diffuse and difficult.) 2020 8 21.88 S 10.9 AQ 40.7L 72 4.5 3 BIV 2020 8 21.878 S 10.9 AQ 25.4J 72 3 2 BOU Westerwijtwerd 2020 8 19.90 S 11.0 AQ 40.7L 72 3 3 BIV 2020 8 18.90 S 10.5:TK 20.0L 100 & 4 2 SCH Eerbeek (Difficult and uncertain observation.) 2020 8 14.92 S 10.7 AQ 40.7L 72 4.5 3 BIV 2020 8 13.92 S 10.1 TK 20.3T 77 6 2/ GON Alto del Trichero, León 2020 8 13.90 S 10.6 TK 40.7L 72 4.5 3 BIV 2020 8 12.91 S 10.8 TK 40.7L 72 4.5 3 BIV 2020 8 11.91 S 10.7 TK 40.7L 72 4 3 BIV 2020 8 9.888 S 10.2 TA 15.5L 42 3.5 2 DIJ Burlage 2020 8 8.95 S 10.5 TK 22.0L 160 2.5 4 GOI Araçatuba 2020 8 7.896 S 10.5 TA 15.5L 42 4 2/ DIJ Burlage (Moonlight.) 2020 8 5.35 S 10.2:TK 25.0L 40 3.7 3 WYA Walcha, NSW (Star in coma, magnitude uncertain. Diffuse coma, hint of tail to the ESE.) 2020 7 30.35 S 9.3 TK 25.0L 40 5.4 3/ WYA Walcha, NSW (Moonlight. Diffuse, weakly condensed.) 2020 7 26.935 S 8.7 TK 25.4J 58 4 2 BOU Westerwijtwerd (Observed just after Moon set. Altitude comet 10.8°.) 2020 7 26.43 M 8.5 TK 8.0R 36 5 3 CAM Katherine, NT 2020 7 25.43 M 8.5 TK 8.0R 36 5 3 CAM Katherine, NT 2020 7 24.94 S 8.2 TK 20.3T 77 10 3/ GON Alto del Castro - Aralla, León 2020 7 24.42 M 8.5 TK 8.0B 20 6 3/ CAM Katherine, NT 2020 7 23.93 S 9.0 TK 10.0B 20 4 4/ GOI Araçatuba (Moonlight.) 2020 7 23.42 M 8.4 TK 8.0B 20 5 4 CAM Katherine, NT 2020 7 21.93 S 8.9 TK 10.0B 20 4 4/ GOI Araçatuba 2020 7 21.92 S 9.1 AQ 40.7L 72 5 3 0.15 120 BIV 2020 7 21.92 S 8.3 TK 20.0L 42 & 6 2 SCH Eerbeek (Twilight. Difficult, diffuse object.) 2020 7 21.35 M 8.4 TK 7.0B 15 9 3/ WYA Walcha, NSW (Semi-transparent outer coma, opaque inner coma.) 2020 7 20.95 S 8.3 TK 20.3T 77 7 3/ GON Alto del Castro - Aralla, León 2020 7 20.93 S 9.2 AQ 40.7L 72 5 3 BIV 2020 7 20.41 M 8.2 TK 8.0B 20 6 4 CAM Katherine, NT 2020 7 19.93 S 8.7 TK 10.0B 20 4 3/ GOI Araçatuba 2020 7 19.41 M 8.3 TK 8.0B 20 6 4 CAM Katherine, NT 2020 7 19.36 M 8.5 TK 7.0B 15 9 5 WYA Walcha, NSW (Semi-transparent outer coma, brightening to a well condensed and opaque centre.) 2020 7 18.92 S 9.0 AQ 40.7L 72 5 2 BIV 2020 7 18.41 M 8.3 TK 8.0B 20 5 4 CAM Katherine, NT 2020 7 17.93 S 8.5 TK 10.0B 20 5 4 GOI Araçatuba 2020 7 17.92 S 8.4 TK 40.7L 72 5 3 BIV 2020 7 17.91 S 8.4 TK 5.0B 7 5 3 BIV 2020 7 17.41 M 8.2 TK 8.0B 20 5 4 CAM Katherine, NT 2020 7 17.38 S 7.4 AA 10.0B 25 SEA Cowra, NSW 2020 7 16.46 M 8.1 TK 8.0B 20 6 4 CAM Katherine, NT 2020 7 15.41 M 8.0 TK 8.0B 20 7 4/ CAM Katherine, NT 2020 7 14.46 M 8.0 TK 8.0B 20 8 5 CAM Katherine, NT 2020 7 13.42 M 7.9 TK 8.0B 20 8 5 CAM Katherine, NT 2020 7 12.95 S 7.9 TK 10.0B 20 5 4/ GOI Araçatuba 2020 7 12.42 M 7.8 TK 8.0B 20 8 5 CAM Katherine, NT 2020 7 12.35 M 7.8 TK 7.0B 15 9 5 WYA Walcha, NSW (Diffuse outer coma, well condensed and opaque centre.) 2020 7 11.95 S 7.8 TK 10.0B 20 5 4/ GOI Araçatuba 2020 7 11.91 S 7.7 AQ 40.7L 72 6 4 0.2 110 BIV 2020 7 10.93 S 7.7 TK 10.0B 20 5 5 GOI Araçatuba 2020 7 9.44 M 7.7 TK 8.0B 20 7 5 CAM Katherine, NT 2020 7 7.92 S 7.6 TK 10.0B 20 6 4/ GOI Araçatuba 2020 7 7.91 S 7.4 TK 20.3T 77 6 4 GON Alto del Castro - Aralla, León (Altitude 12°.) 2020 7 7.44 M 7.7 TK 8.0B 20 6 5 CAM Katherine, NT 2020 7 7.38 S 6.8 AA 10.0B 25 SEA Cowra, NSW 2020 7 7.36 M 7.8 TK 7.0B 15 9 5 WYA Walcha, NSW (Opaque centre, fading to edges, well condensed.) 2020 7 6.41 M 7.8 TK 8.0B 20 6 4 CAM Katherine, NT 2020 7 6.36 M 7.5 TK 7.0B 15 7.2 5/ WYA Walcha, NSW (Moonlight. Very diffuse with an opaque centre, sometimes appears stellar at centre.) 2020 7 5.92 M 7.5 TK 10.0B 20 6 5 GOI Araçatuba (Moonlight.) 2020 7 4.92 M 7.4 TK 10.0B 20 6 5 GOI Araçatuba (Moonlight.) 2020 7 3.37 M 7.6 TK 7.0B 15 9 4/ WYA Walcha, NSW (Moonlight. Hazy coma with a moderately condensed opaque centre.) 2020 7 2.44 M 7.5 TK 8.0B 20 5 4 CAM Katherine, NT 2020 6 30.42 M 7.3 TK 8.0B 20 4 4 CAM Katherine, NT 2020 6 30.35 M 7.1 TK 7.0B 15 8.5 5 WYA Walcha, NSW (Moonlight. Diffuse coma, opaque centre, semi-transparent outer coma.) 2020 6 29.36 M 7.1 TK 7.0B 15 9 5/ WYA Walcha, NSW (Moonlight. Enhances strongly in Swan Band filter.) 2020 6 28.92 M 6.8 TK 10.0B 20 6 5 30m 120 GOI Araçatuba (Moonlight.) 2020 6 28.42 M 7.1 TK 8.0B 20 4 4/ CAM Katherine, NT 2020 6 28.35 S 6.2 AA 10.0B 25 8 SEA Cowra, NSW (Moonlight.) 2020 6 27.42 M 6.9 TK 8.0B 20 5 4/ CAM Katherine, NT 2020 6 26.46 M 6.8 TK 8.0B 20 5 5 CAM Katherine, NT 2020 6 26.35 M 7.0 TK 7.0B 15 8 5/ WYA Walcha, NSW (Moonlight. Close to star but resolvable. Transparent outer coma brightening to an opaque inner coma with faint stellar pseudo-nucleus visible in good seeing.) 2020 6 24.94 S 6.5 TK 5.0B 7 8 4/ GOI Araçatuba 2020 6 22.42 M 6.7 TK 8.0B 20 5 5 CAM Katherine, NT 2020 6 21.42 M 6.6 TK 8.0B 20 5 5 CAM Katherine, NT 2020 6 21.35 M 6.7 TK 7.0B 15 12 4/ 53m 125 WYA Walcha, NSW (Faint tail visible.) 2020 6 20.96 M 6.3 TK 10.0B 20 7 7 60m 120 GOI Araçatuba 2020 6 20.95 M 6.2 TK 5.0B 7 9 5 GOI Araçatuba 2020 6 20.42 M 6.5 TK 8.0B 20 6 5/ CAM Katherine, NT 2020 6 19.93 M 6.2 TK 5.0B 7 9 5/ 60m 125 GOI Araçatuba 2020 6 19.43 M 6.3 TK 8.0B 20 7 6 CAM Katherine, NT 2020 6 19.36 M 6.7 TK 7.0B 15 9 5/ 27m 130 WYA Walcha, NSW (Faint tail visible.) 2020 6 18.43 M 6.2 TK 8.0B 20 8 5/ CAM Katherine, NT 2020 6 17.36 M 6.5 TK 7.0B 15 8 6 26m 137 WYA Walcha, NSW (Faint tail visible. Star in coma.) 2020 6 16.42 M 6.2 TK 8.0B 20 6 6 CAM Katherine, NT 2020 6 16.35 M 6.4 TK 7.0B 15 8.5 5 22m 136 WYA Walcha, NSW (Faint tail visible. Close to star.) 2020 6 15.41 M 6.2 TK 8.0B 20 6 6 CAM Katherine, NT 2020 6 14.41 M 6.2 TK 8.0B 20 7 6 CAM Katherine, NT 2020 6 13.94 M 6.2 TK 10.0B 20 7 7 30m 130 GOI Araçatuba 2020 6 13.93 M 6.0 TK 5.0B 7 8 5 GOI Araçatuba 2020 6 13.41 M 6.3 TK 8.0B 20 7 6 CAM Katherine, NT 2020 6 12.43 M 6.4 TK 8.0B 20 8 6 CAM Katherine, NT 2020 6 11.93 M 6.3 TK 10.0B 20 7 7 30m 135 GOI Araçatuba 2020 6 11.92 M 6.1 TK 5.0B 7 8 5 GOI Araçatuba 2020 6 11.35 M 6.4 TK 7.0B 15 8.5 6 WYA Walcha, NSW (Coma enhances strongly in Swan Band filter. Background star in coma. Hint of faint tail to the SE approximately.) 2020 6 9.43 M 6.6 TK 8.0B 20 6 6 CAM Katherine, NT 2020 6 8.43 M 6.6 TK 8.0B 20 7 6 CAM Katherine, NT 2020 6 8.35 M 6.7 TK 7.0B 15 8 5/ 15m 141 WYA Walcha, NSW (Faint tail visible. Coma well condensed.) 2020 6 7.93 M 6.6 TK 10.0B 20 7 7 45m 135 GOI Araçatuba 2020 6 7.92 M 6.5 TK 5.0B 7 8 6 GOI Araçatuba 2020 6 7.42 M 6.7 TK 8.0B 20 6 6 CAM Katherine, NT 2020 6 6.35 M 6.9 TK 7.0B 15 7 6 WYA Walcha, NSW (Moonlight. Coma diffuse, hint of tail to SE approximately. Faint stellar pseudo-nucleus visible.) 2020 6 5.41 M 6.7 TK 8.0B 20 4 5 CAM Katherine, NT 2020 6 5.35 M 6.8 TK 7.0B 15 6 5/ WYA Walcha, NSW (Moonlight. Coma diffuse, opaque centre, faint stellar pseudo-nucleus sometimes visible.) 2020 6 4.42 M 6.7 TK 8.0B 20 4 6 CAM Katherine, NT 2020 6 4.36 M 6.8 TK 7.0B 15 6.5 6 WYA Walcha, NSW (Moonlight. Coma diffuse with an opaque inner coma and faintly stellar pseudo-nucleus.) 2020 6 3.35 M 6.5:TK 7.0B 15 6.3 5/ WYA Walcha, NSW (Moonlight. Magnitude uncertain due to mag 8.0 star in coma. Bright central condensation, diffuse outer coma.) 2020 6 2.44 M 6.8 TK 8.0B 20 5 5 CAM Katherine, NT 2020 6 1.41 M 6.8 TK 8.0B 20 5 6 CAM Katherine, NT 2020 5 31.42 M 6.9 TK 8.0B 20 4 6 CAM Katherine, NT 2020 5 30.94 M 6.7 TK 10.0B 20 7 6/ 30m 135 GOI Araçatuba 2020 5 30.93 M 6.6 TK 5.0B 7 8 5 GOI Araçatuba (Moonlight.) 2020 5 30.43 M 7.0 TK 8.0B 20 4 6 CAM Katherine, NT 2020 5 30.35 M 7.2 TK 7.0B 15 6.5 6 WYA Walcha, NSW (Moonlight. Coma faintly stellar at centre, opaque inner coma fading to edges.) 2020 5 29.42 M 6.9 TK 8.0B 20 5 5 CAM Katherine, NT 2020 5 28.93 M 6.7 TK 5.0B 7 6 6/ GOI Araçatuba (Moonlight.) 2020 5 28.42 M 7.0 TK 8.0B 20 6 5 CAM Katherine, NT 2020 5 28.35 M 7.4 TK 7.0B 15 6.3 6 WYA Walcha, NSW (Moonlight. Bright opaque centre, fading to edges. Faint stellar pseudo-nucleus visible.) 2020 5 27.35 M 7.2 TK 7.0B 15 5 6 WYA Walcha, NSW (Moonlight. Close to bright star. Stellar pseudo-nucleus with bright and opaque inner coma fading to edges. Enhances strongly in Swan Band filter.) 2020 5 26.43 M 7.0 TK 8.0B 20 6 5 CAM Katherine, NT 2020 5 25.95 M 7.0 TK 10.0B 20 7 6/ 45m 140 GOI Araçatuba 2020 5 25.94 M 6.9 TK 5.0B 7 8 6 GOI Araçatuba 2020 5 25.42 M 7.0 TK 8.0B 20 7 6 CAM Katherine, NT 2020 5 24.42 M 7.2 TK 8.0B 20 6 6 CAM Katherine, NT 2020 5 19.95 M 7.4 TK 10.0B 20 6 6/ 30m 135 GOI Araçatuba 2020 5 19.94 M 7.4 TK 5.0B 7 7 5 GOI Araçatuba 2020 5 18.41 M 7.5 TK 8.0R 36 7 5 CAM Katherine, NT 2020 5 17.95 M 7.4 TK 10.0B 20 6 6 30m 135 GOI Araçatuba 2020 5 17.94 M 7.4 TK 5.0B 7 7 5 GOI Araçatuba 2020 5 17.36 S 7.3 AA 5.0B 10 SEA Cowra, NSW 2020 5 17.36 M 7.8 TK 5.0R 10 8.6 6 WYA Walcha, NSW (Diffuse semi-transparent outer coma, brightening to an opaque centre. Mag 9.3 star in coma.) 2020 5 16.35 M 7.9 TK 5.0R 10 5.2 6 WYA Walcha, NSW (Close to stars. Opaque centre with faint stellar pseudo-nucleus, semi-transparent outer coma.) 2020 5 15.37 S 7.4 AA 5.0B 10 SEA Cowra, NSW 2020 5 14.45 M 7.7 TK 8.0B 20 7 5 CAM Katherine, NT 2020 5 14.38 S 7.9 AA 10.0B 25 SEA Cowra, NSW 2020 5 14.35 M 8.0 TK 5.0R 10 6.4 6 WYA Walcha, NSW (Small diffuse and opaque outer coma, slightly brighter inner coma with stellar pseudo-nucleus.) 2020 5 13.46 M 7.9 TK 8.0B 20 6 5 CAM Katherine, NT 2020 5 11.43 M 7.8 TK 8.0R 16 4 5 CAM Katherine, NT 2020 5 11.38 S 8.4 AA 10.0B 25 6 5 SEA Cowra, NSW (Some enhancement using Swan Band filter.) 2020 5 11.36 M 8.2 TK 5.0R 10 6 6 WYA Walcha, NSW (Diffuse outer coma, small stellar pseudo-nucleus visible.) 2020 5 10.93 M 7.8 TK 10.0B 20 6 5 15m 120 GOI Araçatuba 2020 5 10.36 M 8.1 TK 7.0B 11 7.3 6 WYA Walcha, NSW (Diffuse outer coma, brightening to an opaque centre. Well condensed centre with stellar pseudo-nucleus. Enhances strongly in Swan Band filter.) 2020 5 9.43 M 8.0 TK 8.0R 16 6 6 CAM Katherine, NT 2020 5 8.43 M 8.7:TK 8.0R 36 3 5 CAM Katherine, NT 2020 5 3.43 M 8.9 TK 8.0R 36 4 5 CAM Katherine, NT 2020 5 2.45 M 9.0:AQ 40.6L 76 3 4 CAM Katherine, NT 2020 5 1.45 M 8.8 TK 40.6L 76 3 5 CAM Katherine, NT 2020 4 28.44 M 9.0 TK 8.0R 36 4 5 CAM Katherine, NT 2020 4 27.43 M 9.0 TK 8.0R 16 4 5/ CAM Katherine, NT 2020 4 26.93 S 9.6 TK 22.0L 60 4 3 GOI Araçatuba 2020 4 25.43 M 9.0 TK 8.0R 36 3 5 CAM Katherine, NT 2020 4 25.37 M 9.3 TK 25.0L 40 5.5 5 WYA Walcha, NSW (Coma diffuse, semi-transparent outer edge brightening to an opaque inner coma, almost stellar at centre. Enhances well in Swan Band filter.) 2020 4 24.38 M 9.3 TK 40.0L 59 5.0 5/ WYA Walcha, NSW (Coma pale auqa-blue in colour. Faint stellar pseudo-nucleus visible in good seeing.) 2020 4 23.43 M 9.5 TK 8.0R 16 4 5 CAM Katherine, NT 2020 4 22.43 M 9.5 TK 8.0R 36 4 5 CAM Katherine, NT 2020 4 22.40 M 9.6 TK 40.0L 59 5.3 5/ WYA Walcha, NSW (Enhances strongly in Swan Band filter. Very diffuse outer coma, sometimes appears to have a faint stellar pseudo-nucleus at centre. Inner coma appears elongated to the NW.) 2020 4 20.43 M 9.8 TK 40.6L 76 3.5 5 CAM Katherine, NT 2020 4 19.94 S 10.3 TK 22.0L 160 2 4 GOI Araçatuba 2020 4 19.43 M 10.0 TK 40.6L 76 4 5 CAM Katherine, NT 2020 4 19.38 M 10.4 TK 40.0L 59 3.8 5 WYA Walcha, NSW (Star in coma. Coma shows opaque centre, fading to edges, semi-transparent outer coma.) 2020 4 18.46 M 10.0 TK 40.6L 76 5 4 CAM Katherine, NT 2020 4 17.39 M 10.2 TK 25.0L 40 4.6 4 WYA Walcha, NSW (Coma shows opaque centre, moderately condensed fading to semi-transparent outer coma. Enhances in Swan Band filter.) 2020 4 16.43 M 10.2 TK 40.6L 76 5 4/ CAM Katherine, NT 2020 4 16.42 S 10.6 GA 25.4L 71 4 SEA Cowra, NSW (Marginally enhanced with Swan Band filter.) 2020 4 14.43 M 10.3 AQ 40.6L 76 5 4 CAM Katherine, NT 2020 4 14.40 M 10.4 TK 25.0L 40 4.2 4 WYA Walcha, NSW (Coma dims in Swan Band filter. Very diffuse semi-transparent outer coma brightening to an opaque centre.) 2020 4 12.44 M 10.6 AQ 40.6L 76 4 3 CAM Katherine, NT 2020 4 11.39 M 10.5 AQ 25.0L 40 4.8 4/ WYA Walcha, NSW (Diffuse semi-transparent outer coma, moderately condensed and opaque inner coma. Enhances in Swan Band filter. Windy conditions.) 2020 3 31.38 S 12.3 AQ 25.0L 74 2.5 2/ WYA Walcha, NSW (Moonlight. Outer coma diffuse, subtle brightening to centre. Enhances slightly in Swan Band filter.) 2020 3 30.98 S 11.5 AU 22.0L 160 1.5 3/ GOI Araçatuba (Moonlight interference.) 2020 3 20.42 M 12.4 AQ 40.0L 108 2.2 3 WYA Walcha, NSW (Mag 14.7 background star in coma. Coma well diffused with opaque central condensation. Slight enhancement in Swan Band filter.) 2020 3 19.41 M 12.8 AQ 40.0L 108 2.2 3/ WYA Walcha, NSW (Coma diffuse and transparent and quite extended from the centre. Inner coma opaque and moderately condensed.) 2020 3 18.41 S 13.5 AQ 40.0L 108 1.4 3 WYA Walcha, NSW (No enhancement in Swan Band filter. Asteroid showing cometary activity. Coma diffuse with weakly condensed centre.)