[Iaude] MPEC X165: COMET C/2021 A1 (Leonard)

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 8 22:23:40 EST 2021


M.P.E.C. 2021-X165                             Issued 2021 December 9, 03:15 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
    on behalf of Division F of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                           COMET C/2021 A1 (Leonard)                            

Additional observations.

Observations:
    CK21A010  C2021 11 05.81773 11 57 54.25 +34 29 59.2           9.5 TqEX165D95
    CK21A010  C2021 11 05.81919 11 57 54.38 +34 29 58.7                qEX165D95
    CK21A010  C2021 11 05.82209 11 57 54.64 +34 29 58.1                qEX165D95
    CK21A010  C2021 11 25.81185 12 48 36.60 +32 04 09.5                VEX165P87
    CK21A010  C2021 11 25.81858 12 48 38.46 +32 04 03.7           8.2 TVEX165P87
    CK21A010  C2021 11 26.84319 12 53 44.37 +31 46 44.0                VEX165P87
    CK21A010  C2021 11 26.84983 12 53 46.46 +31 46 37.6           8.0 TVEX165P87
    CK21A010  C2021 11 27.16030 12 55 25.41 +31 40 46.1          12.2 TSEX165C43
    CK21A010  C2021 11 27.17242 12 55 29.31 +31 40 32.0          12.2 TSEX165C43
    CK21A010  C2021 11 27.17853 12 55 31.25 +31 40 25.2          12.2 TSEX165C43
    CK21A010  C2021 11 27.19040 12 55 35.11 +31 40 12.2          12.3 TSEX165C43
    CK21A010 KC2021 11 28.05850613 00 30.83 +31 22 17.8          11.1 TVEX165L54
    CK21A010 KC2021 11 28.06634913 00 33.62 +31 22 07.5          11.0 TVEX165L54
    CK21A010 KC2021 11 28.07542313 00 36.87 +31 21 55.9          11.1 TVEX165L54
    CK21A010  C2021 11 28.82418 13 05 15.32 +31 04 23.0                VEX165P87
    CK21A010  C2021 11 28.83091 13 05 17.90 +31 04 12.8           7.6 TVEX165P87
    CK21A010  C2021 11 29.21995 13 07 51.86 +30 54 03.9          11.6 TVEX165970
    CK21A010  C2021 11 29.22647 13 07 54.49 +30 53 53.5          11.6 TVEX165970
    CK21A010 jC2021 11 29.51170 13 09 52.28 +30 46 05.9          11.9 TVEX165H06
    CK21A010 jC2021 11 29.51265 13 09 52.73 +30 46 04.5          11.9 TVEX165H06
    CK21A010 jC2021 11 29.51361 13 09 53.11 +30 46 02.6          11.9 TVEX165H06
    CK21A010  C2021 11 29.75559 13 11 36.11 +30 39 01.0                qEX165Q23
    CK21A010  C2021 11 29.75936 13 11 37.71 +30 38 54.6                qEX165Q23
    CK21A010  C2021 11 29.76314 13 11 39.36 +30 38 47.8           8.3 TqEX165Q23
    CK21A010  C2021 11 29.78611 13 11 49.21 +30 38 07.1                qEX165D95
    CK21A010  C2021 11 29.79182 13 11 51.67 +30 37 57.1                qEX165D95
    CK21A010  C2021 11 29.79715 13 11 53.99 +30 37 47.4           7.9 TqEX165D95
    CK21A010 KC2021 11 30.12046 13 14 16.66 +30 27 51.6                VEX165G18
    CK21A010 KC2021 11 30.14782 13 14 28.95 +30 27 00.3          11.4 TVEX165G18
    CK21A010  C2021 11 30.18650 13 14 46.37 +30 25 48.5          12.3 TqEX165G20
    CK21A010  C2021 11 30.18789 13 14 47.14 +30 25 44.2          11.5 TqEX165A77
    CK21A010  C2021 11 30.19172 13 14 48.60 +30 25 39.4          11.2 TqEX165A77
    CK21A010  C2021 11 30.19619 13 14 50.69 +30 25 30.6          11.6 TqEX165A77
    CK21A010  C2021 11 30.20557 13 14 55.08 +30 25 11.5          11.3 TdEX165B66
    CK21A010  C2021 11 30.20890 13 14 56.46 +30 25 06.2          12.3 TqEX165G20
    CK21A010  C2021 11 30.22755 13 15 05.00 +30 24 29.4          11.4 TdEX165B66
    CK21A010  C2021 11 30.23208 13 15 06.94 +30 24 22.3          12.3 TqEX165G20
    CK21A010  C2021 11 30.48068 13 17 02.21 +30 16 13.8          10.6 TqEX165V16
    CK21A010  C2021 11 30.48911 13 17 06.14 +30 15 57.2          10.6 TqEX165V16
    CK21A010  C2021 11 30.49754 13 17 10.07 +30 15 40.8          10.7 TqEX165V16
    CK21A010 jC2021 11 30.50134 13 17 12.08 +30 15 29.0          11.8 TVEX165H06
    CK21A010 jC2021 11 30.50510 13 17 13.89 +30 15 21.5          11.9 TVEX165H06
    CK21A010  C2021 11 30.50597 13 17 13.99 +30 15 24.0          10.7 TqEX165V16
    CK21A010  C2021 11 30.51444 13 17 17.97 +30 15 06.9          10.7 TqEX165V16
    CK21A010  C2021 11 30.52288 13 17 21.92 +30 14 50.0          10.6 TqEX165V16
    CK21A010  C2021 12 01.10158 13 22 05.67 +29 53 52.6          13.0 TvEX165A77
    CK21A010  C2021 12 01.11340 13 22 11.72 +29 53 25.2          12.6 ToEX165A77
    CK21A010  C2021 12 01.11433 13 22 12.13 +29 53 23.6          12.6 ToEX165A77
    CK21A010  C2021 12 01.11526 13 22 12.61 +29 53 21.9           8.4 ToEX165A77
    CK21A010  C2021 12 01.12877 13 22 19.32 +29 52 54.0          11.1 TVEX165L85
    CK21A010 KC2021 12 01.14144 13 22 25.83 +29 52 23.3          12.3 TVEX165213
    CK21A010  C2021 12 01.14986 13 22 30.23 +29 52 02.9          13.0 TvEX165A77
    CK21A010  C2021 12 01.15682 13 22 33.80 +29 51 46.7          12.8 TvEX165A77
    CK21A010  C2021 12 01.16271 13 22 36.54 +29 51 37.5          11.2 TVEX165L85
    CK21A010 KC2021 12 01.16451 13 22 37.62 +29 51 30.9          12.0 TVEX165213
    CK21A010  C2021 12 01.16469 13 22 37.77 +29 51 29.9          13.0 TvEX165A77
    CK21A010  C2021 12 01.17210 13 22 41.55 +29 51 12.2           8.7 TvEX165A77
    CK21A010 KC2021 12 01.18763 13 22 49.44 +29 50 37.2          11.7 TVEX165213
    CK21A010  C2021 12 01.49822 13 25 31.59 +29 38 23.5          10.2 TqEX165V16
    CK21A010 jC2021 12 01.50141 13 25 33.67 +29 38 09.7          11.9 TVEX165H06
    CK21A010 jC2021 12 01.50236 13 25 34.16 +29 38 07.8          11.9 TVEX165H06
    CK21A010 jC2021 12 01.50331 13 25 34.68 +29 38 05.4          11.9 TVEX165H06
    CK21A010  C2021 12 01.50457 13 25 34.94 +29 38 08.2          10.3 TqEX165V16
    CK21A010 jC2021 12 01.50536 13 25 35.78 +29 38 00.4          11.9 TVEX165H06
    CK21A010  C2021 12 01.51087 13 25 38.27 +29 37 53.0          10.3 TqEX165V16
    CK21A010  C2021 12 01.51724 13 25 41.68 +29 37 37.2          10.2 TqEX165V16
    CK21A010 #C2021 12 01.52058 13 25 43.81 +29 37 23.3           8.3 TVEX165H06
    CK21A010 #C2021 12 01.52145 13 25 44.26 +29 37 21.2           8.3 TVEX165H06
    CK21A010 #C2021 12 01.52229 13 25 44.75 +29 37 18.8           8.3 TVEX165H06
    CK21A010  C2021 12 01.52398 13 25 45.23 +29 37 21.0          10.2 TqEX165V16
    CK21A010  C2021 12 01.77505 13 28 02.32 +29 26 34.9                mEX165349
    CK21A010  C2021 12 01.77704 13 28 03.40 +29 26 29.5                mEX165349
    CK21A010  C2021 12 01.77904 13 28 04.53 +29 26 24.4           7.2 TmEX165349
    CK21A010  C2021 12 02.12804 13 31 21.54 +29 10 36.3          11.6 TVEX165I81
    CK21A010  C2021 12 02.13480 13 31 25.54 +29 10 16.3          11.7 TVEX165I81
    CK21A010  C2021 12 02.15676 13 31 38.36 +29 09 16.4          11.8 TVEX165970
    CK21A010  C2021 12 02.15920 13 31 39.78 +29 09 09.4          11.8 TVEX165970
    CK21A010  C2021 12 02.17050 13 31 46.25 +29 08 36.4          11.6 TVEX165I81
    CK21A010  C2021 12 02.17943 13 31 51.67 +29 08 15.3          11.8 ToEX165A77
    CK21A010  C2021 12 02.18050 13 31 52.03 +29 08 08.4          11.6 TVEX165I81
    CK21A010  C2021 12 02.18828 13 31 56.79 +29 07 50.5          12.4 ToEX165A77
    CK21A010  C2021 12 02.19280 13 31 59.44 +29 07 37.9          12.3 ToEX165A77
    CK21A010  C2021 12 02.19609 13 32 01.29 +29 07 28.9          12.5 ToEX165A77
    CK21A010  C2021 12 02.19744 13 32 02.04 +29 07 25.6          12.7 ToEX165A77
    CK21A010  C2021 12 02.19895 13 32 03.01 +29 07 20.2          12.2 ToEX165A77
    CK21A010  C2021 12 02.20045 13 32 03.88 +29 07 16.0          12.4 ToEX165A77
    CK21A010  C2021 12 02.20180 13 32 04.69 +29 07 12.4          12.3 ToEX165A77
    CK21A010  C2021 12 02.20424 13 32 06.16 +29 07 05.3          12.2 ToEX165A77
    CK21A010  C2021 12 02.20701 13 32 07.74 +29 06 57.6           8.8 ToEX165A77
    CK21A010  C2021 12 02.21298 13 32 11.14 +29 06 40.9          12.5 ToEX165A77
    CK21A010  C2021 12 02.21576 13 32 12.77 +29 06 33.1           9.5 ToEX165A77
    CK21A010  C2021 12 02.22270 13 32 16.85 +29 06 13.0          12.4 ToEX165A77
    CK21A010  C2021 12 02.22338 13 32 17.04 +29 06 07.3          11.6 TVEX165I81
    CK21A010  C2021 12 02.22352 13 32 17.33 +29 06 11.0          11.7 NVEX165J01
    CK21A010  C2021 12 02.22736 13 32 19.60 +29 05 59.8          11.7 NVEX165J01
    CK21A010  C2021 12 02.23001 13 32 20.91 +29 05 48.8          11.6 TVEX165I81
    CK21A010  C2021 12 02.23044 13 32 21.40 +29 05 51.0          11.7 NVEX165J01
    CK21A010  C2021 12 02.23221 13 32 22.20 +29 05 42.6          11.6 TVEX165I81
    CK21A010  C2021 12 02.48314 13 34 51.97 +28 53 36.5          10.2 TqEX165V16
    CK21A010  C2021 12 02.48948 13 34 55.74 +28 53 18.4          10.2 TqEX165V16
    CK21A010  C2021 12 02.49580 13 34 59.64 +28 52 58.4          10.2 TqEX165V16
    CK21A010  C2021 12 02.50215 13 35 03.45 +28 52 40.0          10.2 TqEX165V16
    CK21A010 jC2021 12 02.50312 13 35 04.43 +28 52 31.1          11.8 TVEX165H06
    CK21A010 jC2021 12 02.50418 13 35 05.08 +28 52 27.9          11.9 TVEX165H06
    CK21A010 jC2021 12 02.50528 13 35 05.70 +28 52 24.8          11.8 TVEX165H06
    CK21A010 jC2021 12 02.50631 13 35 06.30 +28 52 21.9          11.8 TVEX165H06
    CK21A010  C2021 12 02.50849 13 35 07.27 +28 52 21.2          10.2 TqEX165V16
    CK21A010  C2021 12 02.51480 13 35 11.10 +28 52 02.3          10.2 TqEX165V16
    CK21A010  C2021 12 02.52158 13 35 15.20 +28 51 41.9          10.2 TqEX165V16
    CK21A010  C2021 12 03.12669213 41 39.74 +28 18 46.8          12.4 GVEX165K74
    CK21A010  C2021 12 03.13067813 41 42.38 +28 18 33.0          12.4 GVEX165K74
    CK21A010  C2021 12 03.13465913 41 45.03 +28 18 19.3          12.4 GVEX165K74
    CK21A010  C2021 12 03.13606 13 41 45.89 +28 18 14.8          11.4 TVEX165134
    CK21A010  C2021 12 03.13679 13 41 46.34 +28 18 12.7          11.4 TVEX165134
    CK21A010  C2021 12 03.13752 13 41 46.83 +28 18 10.0          11.4 TVEX165134
    CK21A010  C2021 12 03.13825 13 41 47.28 +28 18 07.9          11.4 TVEX165134
    CK21A010  C2021 12 03.13864613 41 47.67 +28 18 05.6          12.3 GVEX165K74
    CK21A010  C2021 12 03.13903 13 41 47.83 +28 18 05.0          11.4 TVEX165134
    CK21A010  C2021 12 03.13977 13 41 48.30 +28 18 02.4          11.4 TVEX165134
    CK21A010  C2021 12 03.14051 13 41 48.80 +28 17 59.8          11.4 TVEX165134
    CK21A010  C2021 12 03.14125 13 41 49.32 +28 17 57.0          11.4 TVEX165134
    CK21A010  C2021 12 03.14198 13 41 49.80 +28 17 54.6          11.4 TVEX165134
    CK21A010  C2021 12 03.14271 13 41 50.26 +28 17 52.0          11.4 TVEX165134
    CK21A010  C2021 12 03.14296613 41 50.53 +28 17 50.6          12.4 GVEX165K74
    CK21A010 1C2021 12 03.15932 13 42 01.06 +28 16 58.2          13.1 TVEX165C40
    CK21A010 1C2021 12 03.15983 13 42 01.40 +28 16 56.4          13.1 TVEX165C40
    CK21A010 1C2021 12 03.15998 13 42 01.49 +28 16 55.9          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16027 13 42 01.69 +28 16 54.9          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16041 13 42 01.78 +28 16 54.5          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16069 13 42 01.97 +28 16 53.5          13.2 TVEX165C40
    CK21A010 1C2021 12 03.16084 13 42 02.07 +28 16 53.0          13.2 TVEX165C40
    CK21A010 1C2021 12 03.16113 13 42 02.26 +28 16 52.0          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16128 13 42 02.36 +28 16 51.4          13.2 TVEX165C40
    CK21A010 1C2021 12 03.16142 13 42 02.45 +28 16 50.9          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16157 13 42 02.55 +28 16 50.5          13.2 TVEX165C40
    CK21A010 1C2021 12 03.16244 13 42 03.13 +28 16 47.4          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16258 13 42 03.22 +28 16 47.0          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16316 13 42 03.60 +28 16 44.9          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16331 13 42 03.70 +28 16 44.4          13.2 TVEX165C40
    CK21A010 1C2021 12 03.16432 13 42 04.37 +28 16 40.9          13.2 TVEX165C40
    CK21A010 1C2021 12 03.16549 13 42 05.14 +28 16 36.8          13.1 TVEX165C40
    CK21A010 1C2021 12 03.16564 13 42 05.23 +28 16 36.3          13.2 TVEX165C40
    CK21A010 1C2021 12 03.16781 13 42 06.66 +28 16 28.8          13.1 TVEX165C40
    CK21A010  C2021 12 03.18869 13 42 20.87 +28 15 15.2          12.3 TqEX165G20
    CK21A010  C2021 12 03.19552 13 42 25.52 +28 14 50.1          13.4 TtEX165A77
    CK21A010  C2021 12 03.19872 13 42 27.53 +28 14 40.2          12.3 TqEX165G20
    CK21A010  C2021 12 03.19949 13 42 28.10 +28 14 36.3          11.6 TtEX165A77
    CK21A010  C2021 12 03.20952 13 42 34.71 +28 14 02.5          12.2 TqEX165G20
    CK21A010  C2021 12 03.21125813 42 35.80 +28 13 54.0          12.4 GVEX165K74
    CK21A010  C2021 12 03.21444 13 42 38.07 +28 13 45.3          13.5 TtEX165A77
    CK21A010  C2021 12 03.21450813 42 37.95 +28 13 42.8          12.3 GVEX165K74
    CK21A010  C2021 12 03.21884313 42 40.84 +28 13 27.6          12.3 GVEX165K74
    CK21A010  C2021 12 03.22497 13 42 45.05 +28 13 08.0          13.4 TtEX165A77
    CK21A010  C2021 12 03.22948 13 42 47.98 +28 12 51.9          11.9 TtEX165A77
    CK21A010  C2021 12 03.23550 13 42 52.09 +28 12 29.6          13.3 TtEX165A77
    CK21A010  C2021 12 03.24050 13 42 55.47 +28 12 12.9          11.5 NVEX165J01
    CK21A010  C2021 12 03.24152 13 42 56.06 +28 12 09.4           9.4 TtEX165A77
    CK21A010  C2021 12 03.24410 13 42 57.86 +28 12 00.3          11.5 NVEX165J01
    CK21A010  C2021 12 03.24862 13 43 00.94 +28 11 43.9          11.5 NVEX165J01
    CK21A010  C2021 12 03.39085813 44 37.87 +28 03 11.2          12.2 TZEX165W33
    CK21A010  C2021 12 03.39975813 44 43.96 +28 02 39.0          12.3 TZEX165W33
    CK21A010  C2021 12 03.40880313 44 50.14 +28 02 05.6          12.3 TZEX165W33
    CK21A010  C2021 12 03.41787813 44 56.41 +28 01 33.2          12.4 TZEX165W33
    CK21A010  C2021 12 03.42343 13 45 00.22 +28 01 10.6          11.0 NqEX165H45
    CK21A010  C2021 12 03.42497 13 45 01.34 +28 01 05.1          10.8 NqEX165H45
    CK21A010  C2021 12 03.42538 13 45 01.61 +28 01 03.1          10.9 NqEX165H45
    CK21A010  C2021 12 03.42576 13 45 01.89 +28 01 02.1          10.7 NqEX165H45
    CK21A010  C2021 12 03.42650 13 45 02.38 +28 00 58.9          10.9 NqEX165H45
    CK21A010  C2021 12 03.42697613 45 02.58 +28 00 59.5          12.4 TZEX165W33
    CK21A010  C2021 12 03.43607713 45 08.82 +28 00 26.3          12.3 TZEX165W33
    CK21A010 jC2021 12 03.50336 13 45 55.62 +27 56 14.7          11.5 TVEX165H06
    CK21A010 jC2021 12 03.50432 13 45 56.24 +27 56 11.3          11.5 TVEX165H06
    CK21A010 jC2021 12 03.50523 13 45 56.93 +27 56 07.6          11.5 TVEX165H06
    CK21A010 jC2021 12 03.50622 13 45 57.58 +27 56 04.4          11.5 TVEX165H06
    CK21A010  C2021 12 03.76679 13 49 02.58 +27 39 13.1           6.8 TqEX165Q23
    CK21A010  C2021 12 03.77091 13 49 05.55 +27 38 57.1                qEX165Q23
    CK21A010  C2021 12 03.77402 13 49 07.84 +27 38 44.8           6.9 TqEX165Q11
    CK21A010  C2021 12 03.77502 13 49 08.49 +27 38 40.8                qEX165Q23
    CK21A010  C2021 12 03.78334 13 49 14.57 +27 38 08.1                qEX165Q11
    CK21A010  C2021 12 03.79203 13 49 20.85 +27 37 33.9                qEX165Q11
    CK21A010  C2021 12 03.79648 13 49 23.76 +27 37 18.5           9.8 TSEX165Q21
    CK21A010  C2021 12 03.80174 13 49 27.39 +27 36 59.6           9.0 TSEX165Q21
    CK21A010  C2021 12 03.80594 13 49 30.71 +27 36 39.6          10.8 TSEX165Q21
    CK21A010  C2021 12 04.09443313 53 04.16 +27 16 42.4           9.9 TqEX165G23
    CK21A010  C2021 12 04.16224513 53 55.49 +27 11 52.5           9.8 TqEX165G23
    CK21A010  C2021 12 04.16480 13 53 58.12 +27 11 34.0          11.3 NVEX165B56
    CK21A010  C2021 12 04.16505 13 53 58.33 +27 11 32.9          11.3 NVEX165B56
    CK21A010  C2021 12 04.16529 13 53 58.47 +27 11 32.5          11.3 NVEX165B56
    CK21A010  C2021 12 04.16553 13 53 58.64 +27 11 31.0          11.3 NVEX165B56
    CK21A010  C2021 12 04.16578 13 53 58.85 +27 11 30.5          11.2 NVEX165B56
    CK21A010 KC2021 12 04.23656 13 54 53.85 +27 06 21.5                VEX165J47
    CK21A010 KC2021 12 04.24159 13 54 57.71 +27 05 59.2                VEX165J47
    CK21A010 KC2021 12 04.24709 13 55 01.96 +27 05 35.2                VEX165J47
    CK21A010  C2021 12 04.77091 14 02 01.37 +26 24 29.1           7.6 TSEX165Q21
    CK21A010  C2021 12 04.77515 14 02 04.96 +26 24 07.6           7.8 TSEX165Q21
    CK21A010  C2021 12 04.77986 14 02 08.82 +26 23 44.4           7.7 TSEX165Q21
    CK21A010  C2021 12 05.14393 14 07 20.64 +25 51 49.9          12.7 TvEX165A77
    CK21A010  C2021 12 05.14514 14 07 21.61 +25 51 44.7          13.0 TvEX165A77
    CK21A010  C2021 12 05.14635 14 07 22.67 +25 51 37.6          12.9 TvEX165A77
    CK21A010  C2021 12 05.14722 14 07 23.60 +25 51 32.1          12.6 TvEX165A77
    CK21A010  C2021 12 05.14840 14 07 24.55 +25 51 26.0          12.7 TvEX165A77
    CK21A010  C2021 12 05.14979 14 07 25.86 +25 51 18.1          12.6 TvEX165A77
    CK21A010  C2021 12 05.15514 14 07 30.49 +25 50 49.0          12.8 TvEX165A77
    CK21A010  C2021 12 05.18403 14 07 55.91 +25 48 10.9          12.6 TvEX165A77
    CK21A010 KC2021 12 05.19605 14 08 06.49 +25 47 06.5          11.3 TVEX165213
    CK21A010 KC2021 12 05.19925 14 08 09.32 +25 46 48.9          11.2 TVEX165213
    CK21A010 KC2021 12 05.20226 14 08 11.98 +25 46 32.4          11.3 TVEX165213
    CK21A010  C2021 12 05.21366 14 08 22.02 +25 45 28.0          12.6 TvEX165A77
    CK21A010  C2021 12 05.23382 14 08 39.89 +25 43 37.4          11.1 NVEX165J01
    CK21A010  C2021 12 05.23811 14 08 43.62 +25 43 13.2           9.1 TvEX165A77
    CK21A010  C2021 12 05.23831 14 08 43.86 +25 43 12.1          11.1 NVEX165J01
    CK21A010  C2021 12 05.24366 14 08 48.72 +25 42 41.7          11.1 NVEX165J01
    CK21A010 jC2021 12 05.50809 14 12 49.20 +25 17 17.7          11.3 TVEX165H06
    CK21A010 jC2021 12 05.50919 14 12 50.12 +25 17 11.9          11.3 TVEX165H06
    CK21A010  C2021 12 06.16730 14 23 29.63 +24 06 20.8          12.7 TvEX165A77
    CK21A010  C2021 12 06.19302 14 23 55.81 +24 03 22.3          12.6 TvEX165A77
    CK21A010  C2021 12 06.19900 14 24 01.98 +24 02 40.3          11.0 NVEX165J01
    CK21A010  C2021 12 06.20346 14 24 06.51 +24 02 09.7          10.9 NVEX165J01
    CK21A010  C2021 12 06.20415 14 24 07.03 +24 02 06.1          12.0 TqEX165G20
    CK21A010  C2021 12 06.21010 14 24 13.20 +24 01 23.5          11.0 NVEX165J01
    CK21A010  C2021 12 06.21264 14 24 15.69 +24 01 06.7          11.9 TqEX165G20
    CK21A010  C2021 12 06.21879 14 24 22.11 +24 00 22.0          12.7 TvEX165A77
    CK21A010  C2021 12 06.22266 14 24 25.98 +23 59 56.3          11.9 TqEX165G20
    CK21A010  C2021 12 06.24078 14 24 44.53 +23 57 46.3           9.5 TvEX165A77
    CK21A010  C2021 12 07.03194 14 39 08.31 +22 14 43.6          13.9 NqEX165M47
    CK21A010  C2021 12 07.04316 14 39 20.91 +22 13 08.5          11.0 NqEX165M47
    CK21A010  C2021 12 07.05191 14 39 31.04 +22 11 56.5          12.9 NqEX165M47
    CK21A010  C2021 12 07.06147 14 39 42.22 +22 10 32.0          12.6 NqEX165M47
    CK21A010 1C2021 12 07.15229 14 41 27.61 +21 57 11.1          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15258 14 41 27.94 +21 57 08.7          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15287 14 41 28.28 +21 57 06.2          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15331 14 41 28.79 +21 57 02.1          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15345 14 41 28.95 +21 57 01.1          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15360 14 41 29.13 +21 56 59.6          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15418 14 41 29.81 +21 56 54.5          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15432 14 41 29.98 +21 56 53.3          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15447 14 41 30.15 +21 56 51.9          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15461 14 41 30.31 +21 56 50.7          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15476 14 41 30.49 +21 56 49.5          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15519 14 41 31.00 +21 56 45.7          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15547 14 41 31.33 +21 56 43.1          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15562 14 41 31.50 +21 56 41.9          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15620 14 41 32.18 +21 56 36.8          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15634 14 41 32.35 +21 56 35.5          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15649 14 41 32.52 +21 56 34.1          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15692 14 41 33.02 +21 56 30.4          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15721 14 41 33.37 +21 56 27.8          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15736 14 41 33.53 +21 56 26.6          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15794 14 41 34.21 +21 56 21.5          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15808 14 41 34.38 +21 56 20.2          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15852 14 41 34.89 +21 56 16.3          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15866 14 41 35.05 +21 56 15.0          11.9 TVEX165C40
    CK21A010 1C2021 12 07.15895 14 41 35.40 +21 56 12.5          11.8 TVEX165C40
    CK21A010 1C2021 12 07.15910 14 41 35.56 +21 56 11.2          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15924 14 41 35.74 +21 56 10.0          11.3 TVEX165C40
    CK21A010 1C2021 12 07.15966 14 41 36.23 +21 56 06.3          11.4 TVEX165C40
    CK21A010 1C2021 12 07.15995 14 41 36.56 +21 56 03.7          11.3 TVEX165C40
    CK21A010 1C2021 12 07.16010 14 41 36.74 +21 56 02.4          11.4 TVEX165C40
    CK21A010 1C2021 12 07.16024 14 41 36.91 +21 56 01.0          11.4 TVEX165C40
    CK21A010 1C2021 12 07.16053 14 41 37.25 +21 55 58.5          11.4 TVEX165C40
    CK21A010 1C2021 12 07.16068 14 41 37.42 +21 55 57.1          11.3 TVEX165C40
    CK21A010 1C2021 12 07.16082 14 41 37.59 +21 55 55.9          11.3 TVEX165C40
    CK21A010 1C2021 12 07.16097 14 41 37.76 +21 55 54.7          11.4 TVEX165C40
    CK21A010  C2021 12 07.16121 14 41 38.41 +21 55 48.4           8.6 TvEX165A77
    CK21A010  C2021 12 07.17140 14 41 50.41 +21 54 19.5          12.4 TvEX165A77
    CK21A010 1C2021 12 07.17161 14 41 50.20 +21 54 20.6          11.4 TVEX165C40
    CK21A010  C2021 12 07.17395 14 41 53.44 +21 53 55.9          12.3 TvEX165A77
    CK21A010  C2021 12 07.17649 14 41 56.45 +21 53 34.6          12.3 TvEX165A77
    CK21A010  C2021 12 07.17904 14 41 59.44 +21 53 12.2          12.5 TvEX165A77
    CK21A010  C2021 12 07.18668 14 42 08.43 +21 52 04.6          12.4 TvEX165A77
    CK21A010  C2021 12 07.20196 14 42 26.39 +21 49 48.6          12.4 TvEX165A77
    CK21A010  C2021 12 07.20625 14 42 31.12 +21 49 04.0          10.9 TVEX165I81
    CK21A010  C2021 12 07.20704 14 42 32.41 +21 49 03.0          12.4 TvEX165A77
    CK21A010  C2021 12 07.20895 14 42 34.33 +21 48 39.5          10.9 TVEX165I81
    CK21A010  C2021 12 07.21029 14 42 35.95 +21 48 27.0          10.9 TVEX165I81
    CK21A010  C2021 12 07.21214 14 42 38.44 +21 48 16.7          12.4 TvEX165A77
    CK21A010  C2021 12 07.21368 14 42 40.12 +21 48 04.2          11.0 TqEX165L27
    CK21A010  C2021 12 07.21651 14 42 43.51 +21 47 38.0          11.0 TqEX165L27
    CK21A010  C2021 12 07.21941 14 42 46.90 +21 47 13.5          11.0 TqEX165L27
    CK21A010  C2021 12 07.22230 14 42 50.39 +21 46 47.2          11.1 TqEX165L27
    CK21A010  C2021 12 07.22520 14 42 53.72 +21 46 21.3          11.1 TqEX165L27
    CK21A010  C2021 12 07.23018 14 42 59.66 +21 45 36.3          11.0 TqEX165L27
    CK21A010  C2021 12 07.23301 14 43 02.82 +21 45 03.8          10.8 TVEX165I81
    CK21A010  C2021 12 07.23308 14 43 03.09 +21 45 09.5          11.1 TqEX165L27
    CK21A010  C2021 12 07.23568 14 43 06.00 +21 44 39.9          10.9 TVEX165I81
    CK21A010  C2021 12 07.23597 14 43 06.48 +21 44 44.0          11.0 TqEX165L27
    CK21A010  C2021 12 07.23703 14 43 07.60 +21 44 27.3          10.9 TVEX165I81
    CK21A010 KC2021 12 07.23861 14 43 09.15 +21 44 30.1           8.6 TqEX165L27
    CK21A010  C2021 12 07.23887 14 43 09.93 +21 44 18.1          10.9 TqEX165L27
    CK21A010  C2021 12 07.25906 14 43 34.01 +21 41 15.3          11.6 TVEX165B74
    CK21A010  C2021 12 07.26209 14 43 37.62 +21 40 48.0          11.6 TVEX165B74
    CK21A010  C2021 12 07.26510 14 43 41.19 +21 40 20.7          11.2 TVEX165B74
    CK21A010  C2021 12 08.12924515 01 56.90 +19 14 59.1          10.6 TVEX165595
    CK21A010  C2021 12 08.13281715 02 01.70 +19 14 19.9          10.6 TVEX165595
    CK21A010  C2021 12 08.13638715 02 06.53 +19 13 39.9          10.5 TVEX165595

Observer details:
134 Groszschwabhausen.  Observer M. Mugrauer.
213 Observatorio Montcabre.  Observer R. Naves.  Measurer M. Campas.  0.30-m
    f/9.0 reflector + CCD.
349 Ageo.  Observer K. Kadota.  0.25-m f/5.0 reflector + CCD.
595 Farra d'Isonzo.  Observer E. Pettarin.  0.4-m f/5.15 reflector + CCD.
970 Chelmsford.  Observer N. James.  0.28-m f/10.0 Schmidt-Cassegrain + CCD.
A77 Observatoire Chante-Perdrix, Dauban.  Observers J.-G. Bosch, F. Kugel.
    0.4-m f/2.8 reflector + CCD.
B56 Observatorio Sant Pere, Mataro.  Observer J. Lopesino.  0.30-m Schmidt-
    Cassegrain.
B66 Osservatorio di Casasco.  Observer W. Borghini.  0.4-m f/7.3 Ritchey-
    Chretien + CCD.
B74 Santa Maria de Montmagastrell.  Observer J. M. Bosch.  0.4-m f/1.20
    Schmidt-Cassegrain + CCD.
C40 Kuban State University Astrophysical Observatory.  Observers A. Ivanov, A.
    Barcov, V. Ivanov, V. Lysenko, N. Yakovenko, N. Ivanova.  Measurer A.
    Ivanov.  0.51-m f/8 reflector + CCD.
C43 Hoyerswerda.  Observer P. Lindner.  0.30-m f/6.3 Schmidt-Cassegrain + CCD.
D95 Kurihara.  Observer T. Takahashi.  0.25-m f/4.1 reflector + CCD.
G18 ALMO Observatory, Padulle.  Observer A. Valvasori.  0.30-m f/4 reflector +
    CCD.
G20 Brignoles Observatory.  Observer Y. Degot Longhi.  0.30-m f/3.8 reflector
    + CCD.
G23 Vulpecula Observatory, Budapest.  Observer Z. Banfalvy.  0.15-m refractor
    + CCD.
H06 iTelescope Observatory, Mayhill.  Observers G. van Buitenen, M. Suzuki.  ,
    0.43-m f/4.5 reflector + CCD.
H45 Arkansas Sky Obs., Petit Jean Mountain South.  Observer P. C. Sherrod.
    0.51-m f/4.3 astrograph + CCD.
I81 Tarbatness Observatory, Portmahomack.  Observer D. Buczynski.  0.35-m
    f/6.0 Schmidt-Cassegrain + CCD.
J01 Observatorio Cielo Profundo, Leon.  Observer J. Gonzalez.  0.20-m f/6
    Ritchey-Chretien + CCD.
J47 Observatorio Nazaret.  Observer G. Muler.  0.30-m f/6 reflector + CCD.
K74 Muensterschwarzach Observatory, Schwarzach.  Observer C. Gerhard.  0.3-m
    f/3.75 Newtonian reflector + CCD.
L27 29PREMOTE Observatory, Dauban.  Observer J.-F. Soulier.  0.25-m f/3.5
    Newtonian reflector + CCD.
L54 Berthelot Observatory, Hunedoara.  Observers A. Sonka, A. Nedelcu.
    Measurer A. Sonka.  0.38-m f/8 Ritchey-Chretien + CCD.
L85 BiAnto Observatory, Lauria.  Observer M. Feraco.  0.28-m f/6.3 Schmidt-
    Cassegrain + CCD.
M47 Sharjah Observatory, Sharjah.  Observer M. Talafha.  0.43-m f/6.8
    reflector + CCD.
P87 Hirao Observatory, Yamaguchi.  Observer K. Yoshimoto.
Q11 Shinshiro.  Observer T. Ikemura.  Measurer H. Sato.  0.35-m f/5 reflector
    + CCD.
Q21 Southern Utsunomiya.  Observer H. Nohara.  0.4-m f/3.8 astrograph + CCD.
Q23 Sukagawa.  Observer H. Sato.  0.25-m f/4 reflector + CCD.
V16 Dark Sky New Mexico, Animas.  Observer D. Crowson.  0.30-m f/8.0 Ritchey-
    Chretien + CCD.
W33 Transit Dreams Observatory, Campobello.  Observer D. Wilde.  0.36-m f/2
    Schmidt-Cassegrain + CCD.

Orbital elements:
    C/2021 A1 (Leonard)                                                         
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                                         
T 2022 Jan. 3.30004 TT                                  Veres                   
q   0.6152471            (2000.0)            P               Q                  
z  -0.0000277      Peri.  225.09379     +0.63774099     +0.29161013             
 +/-0.0000018      Node   255.89643     +0.72790869     -0.53081999             
e   1.0000170      Incl.  132.68653     -0.25186379     -0.79573468             
>From 2172 observations 2020 Apr. 11-2021 Dec. 8, mean residual 1".6.            
                                                                                
Ephemeris:
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2021 11 09    12 02 56.7 +34 14 49   1.3008  1.2679    65.6    45.3  10.1
...
2021 11 24    12 40 42.2 +32 29 26   0.7736  1.0363    70.9    64.2   8.1
...
2021 12 02    13 30 06.7 +29 16 45   0.4876  0.9167    67.4    83.2   6.6
...
2021 12 08    14 59 01.6 +19 39 12   0.2994  0.8318    51.4   112.3   5.1
2021 12 09    15 22 33.4 +16 16 46   0.2757  0.8183    46.1   119.8   4.8
2021 12 10    15 49 07.4 +12 06 30   0.2563  0.8050    39.9   128.4   4.6
...
2021 12 16    18 52 42.1 -19 15 09   0.2730  0.7312    18.9   154.2   4.3
...
2021 12 24    20 58 00.9 -32 51 22   0.5290  0.6550    38.2   111.9   5.3
...
2022 01 08    21 42 04.1 -36 11 15   1.0863  0.6238    34.6    63.6   6.6

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X165




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