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  • MPEC 2021-D93 : 2021 DE2

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    M.P.E.C. 2021-D93                             Issued 2021 February 24, 07:24 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2021 DE2                                 
    
    
    Observations:
         K21D02E  C2021 02 22.31294 10 45 00.72 -13 41 38.4          18.8 GVED093703
         K21D02E  C2021 02 22.31823 10 45 00.46 -13 40 52.2          19.1 GVED093703
         K21D02E* C2021 02 22.49572710 45 03.48 -13 16 36.0          18.69oVED093T08
         K21D02E  C2021 02 22.49895310 45 03.27 -13 16 11.5          18.93oVED093T08
         K21D02E  C2021 02 22.53434910 45 00.76 -13 11 45.6          19.11oVED093T08
         K21D02E  C2021 02 22.54587410 45 00.10 -13 10 18.9          18.60oVED093T08
         K21D02E |C2021 02 23.24020 10 45 39.38 -11 56 41.3          19.6 GVED093807
         K21D02E |C2021 02 23.24235 10 45 39.25 -11 56 30.2          19.7 GVED093807
         K21D02E |C2021 02 23.24450 10 45 39.11 -11 56 19.7          19.6 GVED093807
         K21D02E pC2021 02 23.89848610 46 07.37 -11 13 39.6          19.6 GVED093L01
         K21D02E pC2021 02 23.90108410 46 07.20 -11 13 30.5          19.7 GVED093L01
         K21D02E pC2021 02 23.90368310 46 07.13 -11 13 20.3          19.9 GVED093L01
         K21D02E pC2021 02 23.90628110 46 07.07 -11 13 10.0          19.8 GVED093L01
         K21D02E pC2021 02 23.90888010 46 06.94 -11 13 00.7          19.6 GVED093L01
    
    Observer details:
    703 Catalina Sky Survey.  Observer H. Groeller.  Measurers B. Gray, D. Rankin,
        F. C. Shelly.  0.68-m Schmidt + 10K CCD.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
        1.00-m f/10.0 astrograph + CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, A. Heinze, H.
        Weiland.  Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, H.
        Flewelling, A. Fitzsimmons, J. Robinson, N. Erasmus.  0.5-m reflector +
        CCD.
    
    Orbital elements:
    2021 DE2                                                 Earth MOID = 0.0032 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
    M 350.93067              (2000.0)            P               Q                  
    n   0.39669170     Peri.  120.91394     +0.00717485     -0.99883323             
    a   1.8344279      Node   328.56725     +0.88337019     +0.02871194             
    e   0.5613027      Incl.    5.25429     +0.46862099     -0.03883053             
    P   2.48           H   25.93          G   0.15           U   8                  
    Residuals in seconds of arc
    210222 703  0.3-  0.1-    210222 T08  0.0+  0.1-    210223 L01  0.9-  0.7-
    210222 703 (1.2+  2.3+)   210223 807  0.1-  0.1-    210223 L01  0.5-  0.1-
    210222 T08  0.0+  0.3+    210223 807  0.1+  0.2+    210223 L01  0.0+  0.6+
    210222 T08  0.4+  0.4+    210223 807  0.0+  0.1-    210223 L01  0.4-  0.3+
    210222 T08  0.4-  0.5-    210223 L01  0.2+  0.2-
    
    Ephemeris:
    2021 DE2                 a,e,i = 1.83, 0.56, 5                   q = 0.8048
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 01 25    22 40 24.7 +04 03 46   0.2048  0.8371    39.7   131.3    27.9
    ...
    2021 02 09    22 47 54.1 +04 19 38   0.07986 0.9162    27.1   150.6    28.8
    ...
    2021 02 17    22 52 24.6 -03 54 17   0.01702 0.9717    15.0   164.8    30.0
    ...
    2021 02 23    10 45 32.3 -12 19 27   0.03035 1.0174   157.2    22.2    19.4
    2021 02 24    10 46 04.2 -11 04 17   0.03816 1.0253   158.9    20.3    19.9
    2021 02 25    10 46 24.8 -10 13 56   0.04599 1.0332   160.3    18.9    20.3
    ...
    2021 03 03    10 47 11.0 -08 00 11   0.09364 1.0820   164.9    13.8    21.7
    ...
    2021 03 11    10 47 41.7 -06 47 00   0.1599  1.1491   166.0    12.1    23.0
    ...
    2021 03 26    10 51 09.4 -05 27 06   0.2976  1.2779   157.8    17.2    24.7
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-D93
    


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