[Iaude] MPEC E92: 2021 LZ43 [a=43.48,e=0.11,i=1.5,H=7.73]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-E92                                 Issued 2024 March 6, 19:47 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets, routine data on comets and natural satellites,
         and occasional editorial announcements.  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

                                   2021 LZ43                                    


Additional Observations:
     K21L43Z 3C2022 10 20.21696 19 13 33.779-21 10 34.13         23.1 VVEE092266
     K21L43Z 3C2022 10 20.26058 19 13 33.875-21 10 34.02         23.1 VVEE092266
     K21L43Z 3C2022 10 20.29842 19 13 33.958-21 10 33.91         23.1 VVEE092266
     K21L43Z 3C2022 10 21.20926 19 13 36.092-21 10 31.66         22.9 VVEE092266
     K21L43Z 3C2022 10 21.25420 19 13 36.195-21 10 31.53         22.9 VVEE092266
     K21L43Z 3C2022 10 21.29846 19 13 36.298-21 10 31.40         22.9 VVEE092266
     K21L43Z 3C2022 10 23.20599 19 13 41.064-21 10 26.05         22.9 VVEE092266
     K21L43Z 3C2022 10 23.25093 19 13 41.177-21 10 25.90         22.9 VVEE092266
     K21L43Z 3C2022 10 23.29489 19 13 41.289-21 10 25.76         22.9 VVEE092266

Observer details:
266 New Horizons KBO Search-Subaru.  Observers S. Benecchi, A. Verbiscer, T.
    Ito.  Measurers S. B. Porter, W. E. Fraser, J. J. Kavelaars, L. Peltier.
    8.2mn Subaru Telescope + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
221020 266  6.2+  0.9+    221023 266  6.3+  0.8+    MPO735707    -614 days

Orbital elements:
2021 LZ43                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M  12.80736              (2000.0)            P               Q                  
n   0.00343761     Peri.   38.40790     +0.08243147     +0.99636028             
a  43.4809134      Node   236.33056     -0.92068453     +0.06779615             
e   0.1125482      Incl.    1.49464     -0.38150367     +0.05167073             
P 287              H    7.73          G   0.15           U   8                  
Residuals in seconds of arc
210609 266  0.0   0.0     210705 266  0.0   0.0     221020 266  0.0   0.0
210609 266  0.0   0.0     210705 266  0.0   0.0     221021 266  0.0   0.0
210609 266  0.0   0.0     210906 266  0.0   0.0     221021 266  0.0   0.0
210617 266  0.0   0.0     210906 266  0.0   0.0     221021 266  0.0   0.0
210617 266  0.0   0.0     210906 266  0.0   0.0     221023 266  0.0   0.0
210617 266  0.0   0.0     221020 266  0.0   0.0     221023 266  0.0   0.0
210705 266  0.0   0.0     221020 266  0.0   0.0     221023 266  0.0   0.0

Ephemeris:
2021 LZ43                a,e,i = 43.48, 0.11, 1                  q = 38.5872
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 05    19 30 53.7 -20 35 46  39.6342 38.7367    24.2     0.6    23.8
...
2024 02 20    19 32 31.5 -20 31 52  39.5020 38.7379    38.9     0.9    23.8
...
2024 02 28    19 33 17.8 -20 29 57  39.4100 38.7386    46.8     1.1    23.8
...
2024 03 05    19 33 49.3 -20 28 36  39.3324 38.7391    52.7     1.2    23.8
2024 03 06    19 33 54.3 -20 28 23  39.3188 38.7392    53.7     1.2    23.8
2024 03 07    19 33 59.1 -20 28 11  39.3050 38.7392    54.6     1.2    23.8
...
2024 03 13    19 34 26.5 -20 26 58  39.2191 38.7397    60.5     1.3    23.8
...
2024 03 21    19 34 57.7 -20 25 31  39.0965 38.7404    68.4     1.4    23.8
...
2024 04 05    19 35 38.7 -20 23 26  38.8503 38.7416    83.0     1.5    23.8

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E92