[Iaude] MPEC Y18: 2019 ET5 [a=52.43,e=0.26,i=12.4,H=6.5]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2021-Y18                             Issued 2021 December 17, 17:02 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

                                    2019 ET5                                    


Observations:
     K19E05T*5C2019 03 05.39952 11 49 07.910+09 52 27.71         23.8 rVEY018568
     K19E05T 5C2019 03 05.56697 11 49 07.331+09 52 32.00         23.7 rVEY018568
     K19E05T 4C2019 05 07.16019 11 45 52.734+10 11 31.37               VEY018G37
     K19E05T 4C2019 05 07.16796 11 45 52.701+10 11 31.36               VEY018G37
     K19E05T 4C2019 05 07.20766 11 45 52.628+10 11 31.81               VEY018G37
     K19E05T 4C2019 12 27.33359 11 54 38.560+09 16 27.00         23.9 rVEY018304
     K19E05T 4C2019 12 28.31980 11 54 38.592+09 16 37.76         23.8 rVEY018304
     K19E05T 4C2021 03 17.17960 11 54 55.418+09 33 10.12         23.8 rVEY018304
     K19E05T 4C2021 03 18.22476 11 54 51.750+09 33 35.36         23.9 rVEY018304

Observer details:
304 Las Campanas Observatory.  Observers S. S. Sheppard, C. Trujillo, W.
    Oldroyd.  Measurer S. S. Sheppard.  6.5-m Magellan-Baade telescope + CCD.
568 Mauna Kea.  Observers D. J. Tholen, S. S. Sheppard, C. Trujillo.  Measurer
    S. S. Sheppard.  8.2-m reflector + CCD.
G37 Lowell Discovery Telescope.  Observers C. Trujillo, W. J. Oldroyd.

Orbital elements:
2019 ET5                                                                        
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Alexandersen            
M  91.65123              (2000.0)            P               Q                  
n   0.00259610     Peri.  282.01824     +0.53432781     -0.83136129             
a  52.4310686      Node   134.57800     +0.83470392     +0.49046412             
e   0.2582595      Incl.   12.38302     +0.13327854     +0.26131084             
P 380              H    6.53          G   0.15           U   8                  
Residuals in seconds of arc
190305 568  0.0   0.0     190507 G37  0.2-  0.2-    191228 304  0.0   0.1+
190305 568  0.1+  0.1+    190507 G37  0.0   0.0     210317 304  0.1+  0.2-
190507 G37  0.1+  0.1-    191227 304  0.0   0.1+    210318 304  0.1-  0.1+

Ephemeris:
2019 ET5                 a,e,i = 52.43, 0.26, 12                 q = 38.8902
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 17    11 59 57.4 +08 51 45  56.6117 56.1009    58.5     0.9    24.2
...
2021 12 02    12 00 32.0 +08 50 34  56.3844 56.1092    73.3     1.0    24.2
...
2021 12 10    12 00 44.8 +08 50 40  56.2542 56.1136    81.3     1.0    24.2
...
2021 12 16    12 00 51.6 +08 51 03  56.1545 56.1169    87.3     1.0    24.2
2021 12 17    12 00 52.5 +08 51 09  56.1378 56.1175    88.3     1.0    24.2
2021 12 18    12 00 53.3 +08 51 15  56.1211 56.1180    89.3     1.0    24.2
...
2021 12 24    12 00 56.8 +08 52 00  56.0210 56.1213    95.4     1.0    24.2
...
2022 01 01    12 00 57.6 +08 53 26  55.8892 56.1257   103.4     1.0    24.2
...
2022 01 16    12 00 47.2 +08 57 15  55.6566 56.1340   118.6     0.9    24.1

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-Y18