[Iaude] MPEC E101: 2021 LJ44 [a=44.13,e=0.05,i=4.0,H=8.52]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-E101                                Issued 2024 March 6, 20:07 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 LJ44                                    


Additional Observations:
     K21L44J 3C2022 10 21.20926 19 16 21.434-21 18 46.39         24.1 VVEE101266
     K21L44J 3C2022 10 21.25420 19 16 21.517-21 18 46.32         24.1 VVEE101266
     K21L44J 3C2022 10 21.29846 19 16 21.599-21 18 46.25         24.1 VVEE101266
     K21L44J 3C2022 10 23.20599 19 16 25.433-21 18 43.27         24.0 VVEE101266
     K21L44J 3C2022 10 23.25093 19 16 25.524-21 18 43.18         24.0 VVEE101266
     K21L44J 3C2022 10 23.29489 19 16 25.614-21 18 43.09         24.0 VVEE101266

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
221021 266  9.5+  1.3+    221023 266  9.6+  1.3+    MPO735708   +1839 days

Orbital elements:
2021 LJ44                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 266.52417              (2000.0)            P               Q                  
n   0.00336199     Peri.  267.17960     +0.86300807     -0.50180252             
a  44.1304230      Node   122.93309     +0.48674253     +0.79496149             
e   0.0520086      Incl.    3.99037     +0.13527299     +0.34092588             
P 293              H    8.52          G   0.15           U   7                  
Residuals in seconds of arc
210609 266  0.0   0.0     210705 266  0.0   0.0     221021 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     210705 266  0.0   0.0     221021 266  0.0   0.0
210617 266  0.0   0.0     210905 266  0.0   0.0     221023 266  0.0   0.0
210617 266  0.0   0.0     210905 266  0.0   0.0     221023 266  0.0   0.0
210617 266  0.0   0.0     210905 266  0.0   0.0     221023 266  0.0   0.0

Ephemeris:
2021 LJ44                a,e,i = 44.13, 0.05, 4                  q = 41.8353
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 05    19 30 38.7 -20 57 23  45.2921 44.3951    24.3     0.5    25.1
...
2024 02 20    19 32 02.9 -20 54 22  45.1560 44.3931    39.1     0.8    25.2
...
2024 02 28    19 32 42.7 -20 52 54  45.0618 44.3920    47.0     0.9    25.2
...
2024 03 05    19 33 09.6 -20 51 54  44.9826 44.3912    52.9     1.0    25.2
2024 03 06    19 33 13.9 -20 51 44  44.9688 44.3911    53.9     1.0    25.2
2024 03 07    19 33 18.0 -20 51 35  44.9547 44.3910    54.9     1.0    25.2
...
2024 03 13    19 33 41.4 -20 50 42  44.8672 44.3902    60.8     1.1    25.2
...
2024 03 21    19 34 07.8 -20 49 40  44.7425 44.3891    68.6     1.2    25.2
...
2024 04 05    19 34 42.0 -20 48 18  44.4924 44.3871    83.3     1.3    25.2

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E101