[Iaude] MPEC E121: 2021 LZ44 [a=43.71,e=0.04,i=1.7,H=8.31]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-E121                                Issued 2024 March 8, 01:06 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 LZ44                                    


Additional Observations:
     K21L44Z 3C2022 10 20.21696 19 11 01.358-20 58 20.03         23.9 VVEE121266
     K21L44Z 3C2022 10 20.26058 19 11 01.446-20 58 19.96         23.9 VVEE121266
     K21L44Z 3C2022 10 20.29842 19 11 01.523-20 58 19.90         23.9 VVEE121266
     K21L44Z 3C2022 10 23.20599 19 11 08.016-20 58 15.27         23.7 VVEE121266
     K21L44Z 3C2022 10 23.25093 19 11 08.120-20 58 15.17         23.7 VVEE121266
     K21L44Z 3C2022 10 23.29489 19 11 08.222-20 58 15.08         23.7 VVEE121266

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 (or two decimals in degrees), reference and Delta-T
221020 266 0.03- 0.00-    221023 266 0.03- 0.00-    MPO735710   +7830 days

Orbital elements:
2021 LZ44                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 348.33322              (2000.0)            P               Q                  
n   0.00341102     Peri.  132.48132     +0.53603804     +0.84417880             
a  43.7065758      Node   169.92939     -0.78273863     +0.49924206             
e   0.0380634      Incl.    1.65084     -0.31620160     +0.19524222             
P 289              H    8.31          G   0.15           U   8                  
Residuals in seconds of arc
210609 266  0.0   0.0     210617 266  0.0   0.0     221020 266  0.0   0.1-
210609 266  0.0   0.0     210906 266  0.0   0.0     221020 266  0.0   0.1-
210609 266  0.0   0.0     210906 266  0.0   0.0     221023 266  0.0   0.1+
210617 266  0.0   0.0     210906 266  0.0   0.0     221023 266  0.0   0.1+
210617 266  0.0   0.0     221020 266  0.0   0.1-    221023 266  0.0   0.1+

Ephemeris:
2021 LZ44                a,e,i = 43.71, 0.04, 2                  q = 42.0430
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 07    19 26 42.6 -20 31 26  42.9564 42.0812    27.1     0.6    24.7
...
2024 02 22    19 28 09.4 -20 28 09  42.8113 42.0809    41.9     0.9    24.7
...
2024 03 01    19 28 49.9 -20 26 32  42.7131 42.0807    49.8     1.0    24.7
...
2024 03 07    19 29 17.1 -20 25 25  42.6314 42.0806    55.7     1.1    24.7
2024 03 08    19 29 21.4 -20 25 14  42.6172 42.0806    56.7     1.1    24.7
2024 03 09    19 29 25.6 -20 25 04  42.6028 42.0806    57.7     1.1    24.7
...
2024 03 15    19 29 48.8 -20 24 04  42.5133 42.0804    63.6     1.2    24.7
...
2024 03 23    19 30 14.8 -20 22 54  42.3869 42.0802    71.4     1.3    24.7
...
2024 04 07    19 30 47.0 -20 21 16  42.1358 42.0799    86.1     1.4    24.7

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E121