[Iaude] MPEC E90: 2021 LX43 [a=43.36,e=0.02,i=2.0,H=8.98]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-E90                                 Issued 2024 March 6, 19:43 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 LX43                                    


Additional Observations:
     K21L43X 3C2022 10 20.21696 19 16 25.670-21 22 32.11         24.6 VVEE090266
     K21L43X 3C2022 10 20.26058 19 16 25.748-21 22 32.02         24.6 VVEE090266
     K21L43X 3C2022 10 20.29842 19 16 25.816-21 22 31.95         24.6 VVEE090266
     K21L43X 3C2022 10 21.20926 19 16 27.552-21 22 30.11         24.6 VVEE090266
     K21L43X 3C2022 10 21.25420 19 16 27.636-21 22 30.01         24.6 VVEE090266
     K21L43X 3C2022 10 21.29846 19 16 27.719-21 22 29.91         24.6 VVEE090266
     K21L43X 3C2022 10 23.20599 19 16 31.628-21 22 26.00         24.7 VVEE090266
     K21L43X 3C2022 10 23.25093 19 16 31.721-21 22 25.89         24.7 VVEE090266
     K21L43X 3C2022 10 23.29489 19 16 31.812-21 22 25.77         24.7 VVEE090266

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 62.0+  9.5+    221023 266 62.6+  9.6+    MPO735707   +2119 days

Orbital elements:
2021 LX43                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 115.45248              (2000.0)            P               Q                  
n   0.00345178     Peri.   37.55142     -0.99303779     -0.11528034             
a  43.3618124      Node   135.80955     +0.09789347     -0.92197054             
e   0.0195983      Incl.    1.99088     +0.06551963     -0.36970363             
P 286              H    8.98          G   0.15           U   8                  
Residuals in seconds of arc
210609 266  0.0   0.1+    210705 266  0.1+  0.0     221020 266  0.0   0.1-
210609 266  0.0   0.1+    210705 266  0.1+  0.0     221021 266  0.0   0.1+
210609 266  0.0   0.1+    210905 266  0.0   0.2-    221021 266  0.0   0.1+
210617 266  0.1-  0.0     210905 266  0.0   0.2-    221021 266  0.0   0.1+
210617 266  0.1-  0.1+    210905 266  0.0   0.2-    221023 266  0.0   0.0
210617 266  0.1-  0.1+    221020 266  0.0   0.1-    221023 266  0.0   0.0
210705 266  0.1+  0.0     221020 266  0.0   0.1-    221023 266  0.0   0.0

Ephemeris:
2021 LX43                a,e,i = 43.36, 0.02, 2                  q = 42.5120
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 05    19 31 00.4 -20 57 09  44.6355 43.7379    24.2     0.5    25.5
...
2024 02 20    19 32 26.0 -20 53 58  44.5025 43.7386    39.0     0.8    25.6
...
2024 02 28    19 33 06.3 -20 52 25  44.4099 43.7390    46.9     0.9    25.6
...
2024 03 05    19 33 33.8 -20 51 21  44.3319 43.7392    52.8     1.0    25.6
2024 03 06    19 33 38.1 -20 51 10  44.3182 43.7393    53.8     1.0    25.6
2024 03 07    19 33 42.3 -20 51 00  44.3044 43.7393    54.8     1.1    25.6
...
2024 03 13    19 34 06.0 -20 50 03  44.2180 43.7396    60.7     1.1    25.6
...
2024 03 21    19 34 32.9 -20 48 57  44.0949 43.7400    68.5     1.2    25.6
...
2024 04 05    19 35 07.7 -20 47 27  43.8476 43.7407    83.2     1.3    25.6

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E90