[Iaude] MPEC J312: 2021 AE4 [a=1.16,e=0.16,i=15.8,H=21.78]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Wed May 15 14:21:58 EDT 2024


M.P.E.C. 2024-J312                                 Issued 2024 May 15, 18:20 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 AE4                                    


                           Revision to MPEC 2021-A125                           

Additional Observations:
     K21A04E <C2016 09 10.35172000 14 23.589-63 57 35.07         21.27iVEJ312W84
     K21A04E <C2016 09 10.35308500 14 23.132-63 57 33.02         21.54rVEJ312W84
     K21A04E <C2016 09 10.35444900 14 22.682-63 57 30.83         21.97gVEJ312W84
     K21A04E &C2016 10 03.11569623 00 08.46 -50 05 19.1                WEJ312W84
     K21A04E <C2016 10 03.11707923 00 08.311-50 05 15.60         22.27gVEJ312W84

Observer details:
W84 Cerro Tololo-DECam.  Observers M.-Y. Wang, E. Kovacs, K. Story, D.
    Hollowood, B. Nord.  Measurers A. Coffinet, S. Deen.  4.0-m Reflector +
    CCD, 4.0-m reflector + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
160910 W84 0.04- 0.03-    161003 W84 0.04- 0.01-    MPO624180   +0.01 days

Orbital elements:
2021 AE4                                            PHA, Earth MOID = 0.0375 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 120.14656              (2000.0)            P               Q                  
n   0.78931285     Peri.  172.40175     -0.74000644     +0.63999821             
a   1.1595868      Node    49.54246     -0.63051574     -0.55299696             
e   0.1624537      Incl.   15.77571     -0.23418019     -0.53347601             
P   1.25           H   21.78          G   0.15           U   1                  
Residuals in seconds of arc
160910 W84  0.1+  0.0     210111 033  0.1-  0.4-    210224 291  0.2-  0.0
160910 W84  0.0   0.0     210111 033  0.2-  0.3-    210224 291  0.0   0.1-
160910 W84  0.0   0.1+    210111 033  0.1-  0.4-    210224 291  0.2-  0.0
161003 W84  0.0   0.1+    210116 I52  0.1+  0.0     210226 695  0.1-  0.2+
161003 W84  0.1-  0.0     210116 I52  0.2+  0.1-    210226 695  0.2+  0.3+
210106 F51  0.1+  0.3+    210116 I52  0.0   0.1+    210226 695  0.1+  0.4+
210106 F51  0.1-  0.0     210116 I52  0.0   0.6-    210302 291  0.1-  0.1-
210106 F51  0.2+  0.1+    210118 291  0.2+  0.1-    210302 291  0.0   0.0
210108 291  0.2+  0.3-    210118 291  0.1-  0.0     210302 291  0.1-  0.0
210108 291  0.2+  0.1-    210118 291  0.1-  0.0     210402 291  0.0   0.4+
210108 291  0.1+  0.1-    210131 695  0.5-  0.3+    210402 291  0.3+  0.4-
210109 L01  0.2+  0.1-    210131 695  0.5+  0.6+    210402 291  0.4-  0.1+
210109 L01  0.3-  0.1+    210131 695  0.0   0.2+
210109 L01  0.3-  0.3-    210210 T12  0.0   0.1-

Ephemeris:
2021 AE4                 a,e,i = 1.16, 0.16, 16                  q = 0.9712
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 15    01 04 57.3 +00 14 07   2.2654  1.3000    11.8     9.1    24.7
...
2024 04 30    01 45 33.8 +05 25 42   2.2730  1.3205    14.3    10.9    24.8
...
2024 05 08    02 07 09.4 +08 04 22   2.2717  1.3292    15.8    11.9    24.9
...
2024 05 14    02 23 24.8 +09 59 14   2.2681  1.3346    17.0    12.8    24.9
2024 05 15    02 26 07.9 +10 18 01   2.2673  1.3354    17.2    12.9    24.9
2024 05 16    02 28 51.2 +10 36 40   2.2664  1.3362    17.4    13.1    25.0
...
2024 05 22    02 45 15.3 +12 26 15   2.2599  1.3405    18.7    14.0    25.0
...
2024 05 30    03 07 23.3 +14 45 33   2.2477  1.3447    20.4    15.2    25.0
...
2024 06 14    03 50 00.8 +18 43 09   2.2142  1.3480    23.7    17.7    25.1

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-J312





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