[Iaude] MPEC E54: 2021 LC44 [a=46.34,e=0.13,i=2.4,H=8.56]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Tue Mar 5 12:13:23 EST 2024


M.P.E.C. 2024-E54                                 Issued 2024 March 5, 17:11 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 LC44                                    


Additional Observations:
     K21L44C 3C2014 06 25.33943 18 42 42.967-21 18 53.71         25.0 rVEE054266
     K21L44C 3C2014 06 25.45033 18 42 42.466-21 18 54.24         25.0 rVEE054266
     K21L44C 3C2014 06 25.56643 18 42 41.941-21 18 54.76         25.0 rVEE054266
     K21L44C 3C2014 06 27.34219 18 42 34.038-21 19 03.07         25.2 rVEE054266
     K21L44C 3C2014 06 27.36877 18 42 33.918-21 19 03.20         25.2 rVEE054266
     K21L44C 3C2014 06 27.39518 18 42 33.798-21 19 03.33         25.2 rVEE054266
     K21L44C 3C2022 10 20.21696 19 13 11.376-20 54 58.57         24.9 VVEE054266
     K21L44C 3C2022 10 20.26058 19 13 11.444-20 54 58.53         24.9 VVEE054266
     K21L44C 3C2022 10 20.29842 19 13 11.503-20 54 58.49         24.9 VVEE054266
     K21L44C 3C2022 10 21.20926 19 13 13.022-20 54 57.77         24.5 VVEE054266
     K21L44C 3C2022 10 21.25420 19 13 13.096-20 54 57.72         24.5 VVEE054266
     K21L44C 3C2022 10 21.29846 19 13 13.169-20 54 57.67         24.5 VVEE054266
     K21L44C 3C2022 10 23.20599 19 13 16.596-20 54 55.71         24.7 VVEE054266
     K21L44C 3C2022 10 23.25093 19 13 16.678-20 54 55.65         24.7 VVEE054266
     K21L44C 3C2022 10 23.29489 19 13 16.758-20 54 55.58         24.7 VVEE054266

Observer details:
266 New Horizons KBO Search-Subaru.  Observers S. Sheppard, 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
140625 266 0.03+ 0.00+    221023 266 0.01+ 0.00+    MPO735707   -4809 days

Orbital elements:
2021 LC44                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 119.66400              (2000.0)            P               Q                  
n   0.00312447     Peri.   13.61435     -0.92975922     -0.36735522             
a  46.3395868      Node   144.80198     +0.33369132     -0.86889422             
e   0.1255020      Incl.    2.43139     +0.15555676     -0.33177246             
P 315              H    8.56          G   0.15           U   5                  
Residuals in seconds of arc
140625 266  0.0   0.0     210617 266  0.0   0.0     221020 266  0.0   0.0
140625 266  0.0   0.0     210617 266  0.0   0.0     221020 266  0.0   0.0
140625 266  0.0   0.0     210617 266  0.0   0.0     221020 266  0.0   0.0
140627 266  0.0   0.0     210705 266  0.0   0.0     221021 266  0.0   0.0
140627 266  0.0   0.0     210705 266  0.0   0.0     221021 266  0.0   0.0
140627 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   0.0     221023 266  0.0   0.0
210609 266  0.0   0.0     210906 266  0.0   0.0     221023 266  0.0   0.0
210609 266  0.0   0.0     210906 266  0.0   0.0     221023 266  0.0   0.0

Ephemeris:
2021 LC44                a,e,i = 46.34, 0.13, 2                  q = 40.5239
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 04    19 25 25.8 -20 35 29  50.6005 49.7046    24.4     0.5    25.7
...
2024 02 19    19 26 39.9 -20 32 47  50.4693 49.7082    39.3     0.7    25.7
...
2024 02 27    19 27 14.7 -20 31 27  50.3777 49.7102    47.2     0.8    25.7
...
2024 03 04    19 27 38.2 -20 30 32  50.3004 49.7116    53.1     0.9    25.7
2024 03 05    19 27 41.9 -20 30 23  50.2869 49.7119    54.1     0.9    25.7
2024 03 06    19 27 45.6 -20 30 14  50.2732 49.7121    55.1     0.9    25.7
...
2024 03 12    19 28 05.8 -20 29 25  50.1876 49.7135    61.0     1.0    25.7
...
2024 03 20    19 28 28.6 -20 28 27  50.0655 49.7155    68.9     1.1    25.7
...
2024 04 04    19 28 57.6 -20 27 05  49.8206 49.7191    83.6     1.1    25.7

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E54





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