[Iaude] MPEC J283: 2021 PO [a=1.81,e=0.84,i=9.0,H=19.35]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Sun May 12 10:13:38 EDT 2024


M.P.E.C. 2024-J283                                 Issued 2024 May 12, 14:12 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 PO                                     


                           Revision to MPEC 2021-P28                            

Additional Observations:
     K21P00O  C2016 08 07.35000619 44 07.136-22 54 47.42         21.47GVEJ283F51
     K21P00O  C2016 08 07.36210219 44 05.068-22 54 49.72         21.54GVEJ283F51
     K21P00O  C2016 08 07.37425419 44 02.981-22 54 52.15         21.33GVEJ283F51
     K21P00O  C2016 08 07.38636919 44 00.897-22 54 54.66         21.47GVEJ283F51
     K21P00O KC2024 05 10.28557607 14 43.315-04 15 16.96         20.2 GVEJ283474
     K21P00O KC2024 05 10.28806507 14 45.535-04 15 27.32         20.9 GVEJ283474
     K21P00O KC2024 05 10.29055207 14 47.690-04 15 38.23         20.5 GVEJ283474

Observer details:
474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
    Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 Reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Herman, T. Lowe, P. Minguez, A.
    Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
    Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
    Weryk.  1.8-m Ritchey-Chretien + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
160807 F51 0.01+ 0.00+    240510 474 0.03+ 0.03+    E2024-E11   +0.00 days

Orbital elements:
2021 PO                                                  Earth MOID = 0.0585 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 358.87649              (2000.0)            P               Q                  
n   0.40374824     Peri.  145.27817     -0.08757907     -0.98885244             
a   1.8129909      Node   309.43681     +0.87499096     -0.01858136             
e   0.8361168      Incl.    8.97001     +0.47615200     -0.14773487             
P   2.44           H   19.35          G   0.15           U   0                  
Residuals in seconds of arc
160807 F51  0.1-  0.3-    210804 H21  0.0   0.1-    210809 T08  0.0   0.3+
160807 F51  0.1+  0.1-    210804 H36  0.0   0.1-    210809 T08  0.3-  0.2-
160807 F51  0.1+  0.0     210804 H36  0.4-  0.0     210809 T08  0.0   0.2-
160807 F51  0.1+  0.1-    210804 H36  0.4-  0.0     210809 D29  0.3-  0.2-
210703 F51  0.1-  0.0     210804 E94  0.2-  0.1+    210809 D29  0.1+  0.2+
210703 F51  0.1-  0.1+    210804 E94  0.1-  0.3-    210809 D29  0.3-  0.3-
210703 F51  0.3-  0.0     210804 E94  0.0   0.6-    210809 033  0.1-  0.1-
210802 T08  0.1+  0.5-    210804 E94  0.2+  1.0-    210809 033  0.2-  0.1+
210802 T08  0.5-  0.4-    210804 E23  0.2+  0.4+    210809 033  0.1+  0.0
210802 F51  0.0   0.0     210804 E23  0.2-  0.3+    210810 T08  0.2+  0.1+
210802 T08  0.1+  0.2+    210804 E23  0.0   0.2-    210810 T08  0.6-  0.3+
210802 F51  0.1+  0.0     210805 T08  0.1+  0.8+    210810 T08  0.0   0.8-
210802 T08  0.2-  0.6+    210805 T08  0.5+  0.6+    210810 T08  0.1-  0.0
210802 F51  0.1+  0.0     210805 T08  0.4+  0.3+    210812 T05  0.2-  0.1+
210802 L81  0.0   0.1+    210805 T08 (1.1-  0.7+)   210812 T05  0.6+  0.0
210802 L81  0.0   0.2-    210805 D29  0.0   0.2+    210812 T05  0.1+  0.1+
210802 L81  0.1-  0.0     210805 D29  0.2+  0.1+    210812 T05  0.1+  0.1-
210802 104  0.0   0.7-    210805 D29  0.1-  0.1+    210812 L18  0.9+  0.5-
210802 104  0.2-  0.0     210806 T08  0.1-  0.2+    210812 L18  0.3-  0.1+
210802 104  0.3+  0.7-    210806 T08  0.2-  0.1+    210812 L18  0.1-  0.4+
210803 L01  0.6-  0.2-    210806 T08  0.1+  0.3+    210813 T08  0.2-  1.0+
210803 L01  0.1+  0.0     210806 T08  0.2-  0.4-    210813 T08  0.3-  0.9+
210803 K93  0.1+  0.1-    210806 R65  0.3-  0.0     210813 T08  0.1-  0.3-
210803 K93  0.4-  0.1-    210806 R65  0.0   0.1-    210813 T08  0.2+  0.6-
210803 K93  0.1+  0.0     210806 R65  0.4-  0.0     210813 T08  0.2+  0.6-
210803 K93  0.1+  0.1+    210807 T05  0.0   0.4-    210813 T08  0.3+  0.6+
210803 K93  0.2+  0.0     210807 T08  0.4-  0.2-    210814 L18  0.0   0.1-
210803 807  0.0   0.1-    210807 T08  1.1-  0.7-    210814 L18  0.2+  0.9+
210803 807  0.0   0.1-    210807 T05  0.4-  0.4-    210814 L18  0.7-  0.3-
210803 807  0.1+  0.1-    210807 T08  0.2+  0.2+    210814 L18  0.7+  0.4-
210803 H21  0.2+  0.0     210807 T05  0.0   0.1-    210814 204  0.2+  0.1+
210803 H21  0.2+  0.1+    210807 T08  0.3-  0.1+    210814 204  0.1+  0.1-
210803 H21  0.2+  0.1+    210807 T05  0.3-  0.2-    210814 204  0.1-  0.1+
210803 654  0.0   0.0     210807 157  0.4-  0.0     210816 T05  0.2-  0.5+
210803 654  0.1-  0.1-    210807 157  0.2-  0.1+    210816 T05  0.4+  0.1-
210803 654  0.1+  0.1-    210807 157  0.1-  0.6+    210816 T05  0.3+  0.2+
210803 P07  0.4-  0.0     210808 T08  0.0   0.1+    210816 T05  0.1-  0.4+
210803 P07  0.0   0.4+    210808 T05  0.1+  0.5+    210825 595  0.4+  0.2+
210803 P07  0.2+  0.4+    210808 T08  0.5-  0.1+    210825 595  0.2+  0.2-
210803 P07  0.2+  0.3+    210808 T05  0.2-  0.5-    210825 595  0.6+  0.2-
210804 807  0.0   0.0     210808 T05  0.1+  0.3-    210827 595  0.4+  0.2+
210804 H21  0.1-  0.2+    210808 T05  0.6-  0.2-    210827 595  0.1+  0.1-
210804 807  0.1-  0.1-    210808 T08  0.2-  0.6-    210907 691  0.1-  0.1-
210804 H21  0.0   0.0     210808 T05  0.3-  0.0     210907 691  0.2-  0.2-
210804 H21  0.1-  0.1+    210808 T05  0.1-  0.4-    240510 474  0.2-  0.1+
210804 807  0.0   0.1-    210808 T08  0.2+  0.4+    240510 474  0.3+  0.2+
210804 H21  0.0   0.1+    210809 T08  0.1+  0.0     240510 474  0.2-  0.3-

Ephemeris:
2021 PO                  a,e,i = 1.81, 0.84, 9                   q = 0.2971
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 12    02 45 48.4 +13 49 34   0.7800  0.3930    21.1   113.3    21.2
...
2024 04 27    04 30 09.5 +08 44 48   0.4411  0.6786    32.7   126.7    22.1
...
2024 05 05    05 59 39.4 +01 49 40   0.3435  0.8256    49.1   112.6    20.9
...
2024 05 11    07 25 17.2 -05 05 11   0.3207  0.9298    66.5    95.1    20.1
2024 05 12    07 40 02.6 -06 13 11   0.3216  0.9467    69.5    92.0    20.0
2024 05 13    07 54 40.5 -07 18 46   0.3240  0.9634    72.4    88.9    20.0
...
2024 05 19    09 15 08.0 -12 35 17   0.3630  1.0608    87.7    72.3    19.8
...
2024 05 27    10 33 37.3 -16 12 32   0.4633  1.1837    99.8    57.5    20.1
...
2024 06 11    11 56 10.8 -18 21 01   0.7210  1.3950   105.7    44.5    21.1

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-J283





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