* * * * * 156P/Russell-LINEAR * * * * *

Year Mn Day    MM  Mag Ref Scope Pwr coma  DC tail p.a. Obs  Site
2021  2 13.883  S 12.8 AQ  31.0J 109  1.3  3            DIJ  Burlage
2021  2 13.881  S 12.7 AQ  31.0J 109  0.8  4            BOU  Burlage, Germany
2021  2  9.42   S 12.0 AQ  25.0L 125  1.0  3/           WYA  Walcha, NSW
(Diffuse. Low altitude 11.9°.)
2021  2  6.89   S 11.0 TK  20.3T 100   3   3            GON  Alto del Trichero - Soto y Amío, León
2021  2  2.44   S 12.8 AQ  25.0L  74   2   3/           WYA  Walcha, NSW
(Diffuse, opaque centre, close to stars.)
2021  1 16.83   S 10.8 TK  20.3T 100   3   3            GON  Collada de la Cobertoria, Asturias
2021  1 14.020  S 11.2 AQ  15.5L  50  1.5  3            DIJ  Burlage
2021  1 13.81   S 10.6 TK  20.3T 100   5   3            GON  Collada de la Cobertoria, Asturias
2021  1 13.809  M 11.7 AQ  25.4J  72  2.2  5            BOU  Lauwersoog
2021  1 13.47   M 12.0 AQ  25.0L  74  1.7  6            WYA  Walcha, NSW
(Opaque centre with stellar pseudo-nucleus visible. Coma appears slightly fanned to the East approximately.)
2021  1 11.45   M 12.0 AQ  25.0L  74  2.3  5            WYA  Walcha, NSW
(Coma dims in Swan Band filter. Altitude 18.0°. At 40x, I can fit M33 on the western side of the field
with the comet visible on the East side [1.3° separation].)
2021  1  7.84   S 10.8 TK  20.3T  77   4   3/           GON  Matadeón de los Oteros, León
2021  1  5.44   M 11.8 AQ  25.0L  74  0.9  6            WYA  Walcha, NSW
(Faint stellar pseudo-nucleus visible, diffuse outer coma.)
2021  1  3.00   S 11.0 AU  22.0L 160   2   3            GOI  Araçatuba
2020 12 16.86   S  9.9 TK  20.3T  77   5   3/           GON  Sierra de Tineo, Asturias
2020 12 14.46   S 10.5 TJ  40.0L  36  4.2  5            YOS  Mt. Hanadate, Ibaraki
(It became brighter furthermore.)
2020 12  9.44   M 10.3 AQ  25.0L  40  4.5  6            WYA  Walcha, NSW
(Faint tail visible at 125x, traced to 2’ in length in p.a. 105 deg. approximately.)
2020 12  8.87   S  9.7 TK  20.3T  77   5   3            GON  Matadeón de los Oteros, León
2020 12  8.45   M 10.3 AQ  25.0L  40  3.7  6            WYA  Walcha, NSW
(Stellar pseudo-nucleus visible, extended diffuse outer coma.)
2020 11 22.02   S  9.6 TK  20.3T  77   6   3            GON  Collado del Fresno - Aramo, Asturias
2020 11 21.52   M 11.1 TJ  40.0L  75  2.1  7/           YOS  Mt. Hanadate, Ibaraki
(Brightened very much since last month. Very strongly condensed and easy to see.)
2020 11 20.920  S 10.2 TK  15.5L  42  3.5  4            DIJ  Burlage
2020 11 20.879  S 10.6 AQ  25.4J  58  3.2  3            BOU  Sint Annen
(Very diffuse object with faint near-stellar central condensation of about magnitude 12.5.)
2020 11 17.94   S  9.6 TK  20.3T  77   8   3            GON  Collado del Fresno - Aramo, Asturias
2020 11 15.993  S  9.9 TK   8.0B  15   3   5            DIJ  Burlage
2020 11 15.46   M  9.7 TK  40.0L  59   6   6            WYA  Walcha, NSW
(Very diffuse, faint star in coma.)
2020 11 14.45   M  9.7 TK  40.0L  59  5.6  6  3.5m  49  WYA  Walcha, NSW
(Background stars in coma. Diffuse and transparent outer coma. Central condensation shows short tail within confines of the coma.
Enhances slightly in Swan Band filter.)
2020 11 10.44   M 10.3 TK  25.0L  40  5.2  6            WYA  Walcha, NSW
(Stellar pseudo-nucleus, m2 approximate magnitude = 12.6. Very diffuse and extended outer coma.)
2020 11  8.41   M 10.6 AQ  25.0L  40  4.5  6            WYA  Walcha, NSW
(Stellar pseudo-nucleus, m2 approximate magnitude = 12.8. Diffuse semi-transparent outer coma.)
2020 11  7.772  S 10.7 AQ  25.4J  58  3.3  2/           BOU  Westerwijtwerd
2020 11  6.96   S 10.3 TK  22.0L  60   3   4            GOI  Araçatuba
2020 11  6.788  S 10.8 TK  15.5L  42  2.5  2/           DIJ  Burlage
2020 11  4.745  S 10.7 AQ  25.4J  58  3.5  2/           BOU  Westerwijtwerd
(Observed before moonrise. Altitude 18.7°.)
2020 11  3.41   M 10.6 AQ  25.0L  40   4   6            WYA  Walcha, NSW
(Dims slightly in Swan Band filter. Stellar pseudo-nucleus with an m2 = 12.9 approximately. Background star on East edge of the coma.)
2020 10 24.00   S  9.7 TK  20.3T  77   8   2            GON  Alto del Castro, León
2020 10 23.913  S 10.8 TK  15.5L  42  2.6  2/           DIJ  Burlage
(Altitude 15°.)
2020 10 23.17   S 11.0 AU  22.0L 160   3   4            GOI  Araçatuba
2020 10 22.853  S 11.0:AQ  25.4J  72  2.5  3            BOU  Westerwijtwerd
(Altitude 15°.)
2020 10 20.51   S 12.3 AU  40.0L 257  0.7  6/           YOS  Mt. Tsukuba, Ibaraki
(Bright! Very strongly condensed and easy to see.)
2020 10 19.43   S 10.7 AA  10.0B  25   5                SEA  Cowra, NSW
(Quite marginal, but somewhat clearer through Swan Band filter.)
2020 10 18.45   S 10.5:    10.0B  25                    SEA  Cowra, NSW
2020 10 16.00   S 10.7 TK  20.3T  77   5   3            GON  Pandorado, León
(Brighter than expected. Large, faint outer coma. Altitude 18°.)
2020 10 13.44   M 12.3 AQ  40.0L 108  2.5  6            WYA  Walcha, NSW
(Bright stellar pseudo-nucleus, diffuse and extended outer coma, m2 = 13.8.)
2020 10 10.98   S 11.8 TK  20.3T 100   3   4            GON  Pandorado, León
2020 10 10.42   M 12.2 AQ  40.0L  59  2.5  6            WYA  Walcha, NSW
(No enhancement in Swan Band filter. Diffuse outer coma with stellar pseudo-nucleus, m2 = 14.6.)
2020 10  9.43   S 12.9 AQ  25.0L  74  1.5  6            WYA  Walcha, NSW
(Faint stellar pseudo-nucleus with diffuse outer coma.)