[Iaude] MPEC E93: 2021 LH44 [a=44.04,e=0.04,i=2.1,H=9.09]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-E93                                 Issued 2024 March 6, 19:51 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 LH44                                    


Additional Observations:
     K21L44H 3C2022 10 20.21696 19 13 20.496-21 41 23.39         24.6 VVEE093266
     K21L44H 3C2022 10 20.26058 19 13 20.581-21 41 23.28         24.6 VVEE093266
     K21L44H 3C2022 10 20.29842 19 13 20.656-21 41 23.19         24.6 VVEE093266
     K21L44H 3C2022 10 21.20926 19 13 22.556-21 41 21.17         25.0 VVEE093266
     K21L44H 3C2022 10 21.25420 19 13 22.648-21 41 21.06         25.0 VVEE093266
     K21L44H 3C2022 10 21.29846 19 13 22.740-21 41 20.94         25.0 VVEE093266
     K21L44H 3C2022 10 23.20599 19 13 26.986-21 41 16.21         24.5 VVEE093266
     K21L44H 3C2022 10 23.25093 19 13 27.087-21 41 16.08         24.5 VVEE093266
     K21L44H 3C2022 10 23.29489 19 13 27.187-21 41 15.94         24.5 VVEE093266

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 18.2+  2.7+    221023 266 18.3+  2.8+    MPO735708   -4998 days

Orbital elements:
2021 LH44                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M  15.08544              (2000.0)            P               Q                  
n   0.00337229     Peri.  146.35711     +0.06838567     +0.99725411             
a  44.0405579      Node   127.54795     -0.92305202     +0.07405443             
e   0.0399740      Incl.    2.05417     -0.37854772     -0.00041793             
P 292              H    9.09          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   0.1-    221021 266  0.0   0.0
210617 266  0.0   0.0     210906 266  0.0   0.1-    221021 266  0.0   0.0
210617 266  0.0   0.0     210906 266  0.0   0.1-    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 LH44                a,e,i = 44.04, 0.04, 2                  q = 42.2801
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 05    19 28 45.7 -21 15 38  43.2377 42.3442    24.7     0.6    25.5
...
2024 02 20    19 30 14.4 -21 12 28  43.1023 42.3446    39.5     0.9    25.5
...
2024 02 28    19 30 56.2 -21 10 56  43.0085 42.3449    47.4     1.0    25.5
...
2024 03 05    19 31 24.6 -21 09 53  42.9298 42.3450    53.3     1.1    25.5
2024 03 06    19 31 29.0 -21 09 43  42.9160 42.3451    54.3     1.1    25.5
2024 03 07    19 31 33.4 -21 09 33  42.9021 42.3451    55.3     1.1    25.6
...
2024 03 13    19 31 57.9 -21 08 37  42.8151 42.3453    61.2     1.2    25.6
...
2024 03 21    19 32 25.7 -21 07 33  42.6913 42.3455    69.1     1.3    25.6
...
2024 04 05    19 33 01.6 -21 06 08  42.4432 42.3459    83.7     1.3    25.5

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E93