[Iaude] MPEC E88: 2021 LA44 [a=39.41,e=0.20,i=4.8,H=7.47]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-E88                                 Issued 2024 March 6, 19:38 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 LA44                                    


Additional Observations:
     K21L44A 3C2022 10 20.21696 19 16 40.276-21 19 26.65         22.6 VVEE088266
     K21L44A 3C2022 10 20.26058 19 16 40.367-21 19 26.58         22.6 VVEE088266
     K21L44A 3C2022 10 20.29842 19 16 40.447-21 19 26.52         22.6 VVEE088266
     K21L44A 3C2022 10 21.20926 19 16 42.477-21 19 25.20         23.1 VVEE088266
     K21L44A 3C2022 10 21.25420 19 16 42.576-21 19 25.13         23.1 VVEE088266
     K21L44A 3C2022 10 21.29846 19 16 42.674-21 19 25.05         23.1 VVEE088266
     K21L44A 3C2022 10 23.20599 19 16 47.260-21 19 21.92         22.5 VVEE088266
     K21L44A 3C2022 10 23.25093 19 16 47.368-21 19 21.83         22.5 VVEE088266
     K21L44A 3C2022 10 23.29489 19 16 47.476-21 19 21.73         22.5 VVEE088266

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  5.4-  0.5-    221023 266  5.4-  0.6-    MPO735707    -144 days

Orbital elements:
2021 LA44                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 292.18346              (2000.0)            P               Q                  
n   0.00398368     Peri.  261.74428     +0.92192984     -0.38063765             
a  39.4106363      Node   120.60219     +0.38007429     +0.85311368             
e   0.2022601      Incl.    4.78746     +0.07475903     +0.35680811             
P 247              H    7.47          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  0.1-  0.1+
210609 266  0.0   0.0     210905 266  0.0   0.0     221021 266  0.1-  0.1+
210617 266  0.0   0.0     210905 266  0.0   0.0     221021 266  0.1-  0.1+
210617 266  0.0   0.0     210905 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 LA44                a,e,i = 39.41, 0.20, 5                  q = 31.4394
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 05    19 33 55.4 -20 54 53  38.8504 37.9482    23.5     0.6    23.4
...
2024 02 20    19 35 35.5 -20 51 15  38.7110 37.9397    38.3     0.9    23.5
...
2024 02 28    19 36 23.1 -20 49 29  38.6149 37.9352    46.1     1.1    23.5
...
2024 03 05    19 36 55.5 -20 48 16  38.5343 37.9318    52.0     1.2    23.5
2024 03 06    19 37 00.6 -20 48 05  38.5201 37.9312    53.0     1.2    23.5
2024 03 07    19 37 05.6 -20 47 53  38.5059 37.9307    54.0     1.2    23.5
...
2024 03 13    19 37 33.8 -20 46 49  38.4166 37.9273    59.9     1.3    23.5
...
2024 03 21    19 38 06.1 -20 45 34  38.2896 37.9228    67.7     1.4    23.5
...
2024 04 05    19 38 48.9 -20 43 55  38.0344 37.9143    82.4     1.5    23.5

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E88