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  • MPEC 2023-A24 : 2021 DS1

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    Read MPEC 2023-A23 Read MPEC 2023-A25


    M.P.E.C. 2023-A24                               Issued 2023 January 9, 14:08 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2021 DS1                                 
    
    
                               Revision to MPEC 2021-D70                            
    
    Additional Observations:
         K21D01S  C2015 04 24.53284914 53 28.882+05 12 51.22         22.87GVEA024F51
         K21D01S  C2015 04 24.54703614 53 27.792+05 13 00.26         23.31GVEA024F51
         K21D01S  C2015 04 24.56121914 53 26.656+05 13 09.30         23.59GVEA024F51
         K21D01S  C2015 04 24.57546114 53 25.530+05 13 18.95         23.03GVEA024F51
         K21D01S KC2015 05 18.46471614 23 27.999+07 54 27.98         22.47GVEA024F51
         K21D01S KC2017 03 24.44111914 10 51.950+03 49 17.25         21.89GVEA024F51
         K21D01S  C2017 03 31.46936614 04 08.899+05 32 37.77         22.94GVEA024F51
         K21D01S  C2017 04 03.52604714 00 47.125+06 16 33.24         23.11GVEA024F51
         K21D01S  C2017 04 03.53747514 00 46.314+06 16 43.27         22.80GVEA024F51
         K21D01S  C2017 04 03.56037414 00 44.672+06 17 02.37         21.95GVEA024F51
         K21D01S  C2021 02 16.51851611 54 53.662+05 33 28.96         22.12GVEA024F52
         K21D01S  C2021 02 16.51916011 54 53.621+05 33 29.60         22.20GVEA024F52
         K21D01S  C2021 04 06.41461411 04 08.923+17 33 28.75         22.55GVEA024F51
         K21D01S  C2021 04 06.42735911 04 08.458+17 33 33.48         23.03GVEA024F51
         K21D01S  C2021 04 06.44001311 04 07.979+17 33 37.60         22.81GVEA024F51
         K21D01S  C2021 04 06.45265911 04 07.502+17 33 41.90         23.05GVEA024F51
         K21D01S 0C2022 12 28.64372310 26 27.397-00 46 03.07         23.09GVEA024T12
         K21D01S 0C2022 12 28.64668810 26 27.474-00 46 02.47         22.85GVEA024T12
         K21D01S 0C2022 12 28.64983910 26 27.553-00 46 01.82         22.73GVEA024T12
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
        Schultz, I. Smith.  Measurers S. Chastel, J. Fairlamb, M. Huber, Y.
        Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
        Lowe, A. Schultz, I. Smith.  Measurers S. Chastel, J. Fairlamb, M. Huber,
        Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observer D. J. Tholen.
        2.24-m f/10.1 reflector + 2112 x 2112 pixels STA1600 10k CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    150424 F51 0.04+ 0.02+    221228 T12 0.03+ 0.00+    MPO606214   -0.15 days
    
    Orbital elements:
    2021 DS1                                                 Earth MOID = 0.3394 AU
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Veres                   
    M  88.17755              (2000.0)            P               Q                  
    n   0.47170755     Peri.  248.44116     +0.77276496     -0.62697343             
    a   1.6343842      Node   150.11972     +0.63052985     +0.74058263             
    e   0.2164248      Incl.   11.42508     +0.07257022     +0.24174717             
    P   2.09           H   20.88          G   0.15           U   2                  
    Residuals in seconds of arc
    150424 F51  0.0   0.0     210217 V06  0.7+  0.1-    210305 807  0.4-  0.2-
    150424 F51  0.3+  0.1-    210217 V06  0.0   0.1+    210306 H21  0.1-  0.1+
    150424 F51  0.1-  0.1-    210218 807  0.5+  0.4-    210306 H21  0.8-  0.4+
    150424 F51  0.4-  0.4+    210218 807  0.4+  0.3-    210306 H21  0.5-  0.5+
    150518 F51  0.1+  0.0     210218 807  0.3+  0.2+    210307 291  0.1-  0.2+
    170324 F51  0.2+  0.5+    210220 807  0.4-  0.2-    210307 291  0.0   0.4+
    170331 F51  0.0   0.1-    210220 807  0.3-  0.4-    210307 291  0.2+  0.1+
    170403 F51  0.1-  0.2-    210220 807  0.1+  0.1-    210406 F51  0.1-  0.0
    170403 F51  0.0   0.1+    210220 291  0.1-  0.1+    210406 F51  0.1+  0.2+
    170403 F51  0.1-  0.2-    210220 291  0.1-  0.1+    210406 F51  0.0   0.1-
    210216 F52  0.0   0.2-    210220 291  0.3+  0.4-    210406 F51  0.1-  0.2-
    210216 F52  0.1-  0.3-    210222 807  0.2-  0.1+    221228 T12  0.0   0.0
    210216 F51  0.1+  0.0     210222 807  0.0   0.1+    221228 T12  0.0   0.0
    210216 F51  0.1+  0.1-    210222 807  0.1+  0.1-    221228 T12  0.0   0.0
    210216 F51  0.1-  0.2+    210305 807  0.3-  0.0
    210216 F51  0.1+  0.1-    210305 807  0.4-  0.0
    
    Ephemeris:
    2021 DS1                 a,e,i = 1.63, 0.22, 11                  q = 1.2807
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2022 12 10    10 10 08.5 -00 41 08   0.9020  1.4732   102.6    40.7    23.1
    ...
    2022 12 25    10 24 22.4 -00 55 11   0.8199  1.5170   114.2    36.3    22.8
    ...
    2023 01 02    10 28 10.8 -00 27 28   0.7783  1.5408   121.6    32.9    22.7
    ...
    2023 01 08    10 29 06.5 +00 12 26   0.7494  1.5587   127.7    29.9    22.5
    2023 01 09    10 29 05.8 +00 20 47   0.7449  1.5617   128.8    29.4    22.5
    2023 01 10    10 29 02.1 +00 29 38   0.7404  1.5647   129.8    28.9    22.5
    ...
    2023 01 16    10 27 38.4 +01 33 20   0.7159  1.5825   136.7    25.2    22.3
    ...
    2023 01 24    10 23 04.8 +03 26 21   0.6904  1.6063   146.6    19.7    22.1
    ...
    2023 02 08    10 07 50.0 +08 06 58   0.6738  1.6501   167.2     7.6    21.7
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-A24
    


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