[Iaude] MPEC F119: 2021 FD1 [a=2.08,e=0.53,i=3.2,H=26.57]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Sun Mar 31 14:27:55 EDT 2024


M.P.E.C. 2024-F119                               Issued 2024 March 31, 18:26 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 FD1                                    


                           Revision to MPEC 2021-F54                            

Additional Observations:
     K21F01D  C2024 03 27.37249910 29 15.585+32 28 37.11         21.31GVEF119F51
     K21F01D  C2024 03 27.39272110 29 16.430+32 29 40.68         21.12GVEF119F51
     K21F01D  C2024 03 27.40266610 29 16.830+32 30 10.79         21.82GVEF119F51
     K21F01D  C2024 03 28.35196410 31 54.014+33 27 53.69         21.31GVEF119F51
     K21F01D  C2024 03 28.36173310 31 54.739+33 28 33.67         20.64GVEF119F51
     K21F01D  C2024 03 28.37143610 31 55.438+33 29 12.90         20.79GVEF119F51
     K21F01D  C2024 03 28.38098710 31 56.177+33 29 50.84         21.41GVEF119F51
     K21F01D  C2024 03 30.39124010 41 01.103+36 35 22.30         20.25iXEF119F51
     K21F01D  C2024 03 30.39783410 41 02.649+36 36 09.96         20.16iXEF119F52
     K21F01D  C2024 03 30.40110910 41 03.421+36 36 33.34         19.92iXEF119F51
     K21F01D  C2024 03 30.40638710 41 04.685+36 37 11.22         20.03iXEF119F52
     K21F01D  C2024 03 30.41094410 41 05.819+36 37 44.29         20.44iXEF119F51
     K21F01D  C2024 03 30.41494010 41 06.795+36 38 12.76         20.27iXEF119F52
     K21F01D  C2024 03 30.42074510 41 08.216+36 38 54.14         20.18iXEF119F51

Observer details:
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.
F52 Pan-STARRS 2, 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 zero decimals in degrees), reference and Delta-T
240327 F51   25+    1+    240330 F51   29+    5+    MPO606254   +2.69 days

Orbital elements:
2021 FD1                                                 Earth MOID = 0.0056 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 352.56953              (2000.0)            P               Q                  
n   0.32781860     Peri.  196.55490     -0.79229857     +0.60981233             
a   2.0831170      Node    21.05886     -0.55335709     -0.70452443             
e   0.5327762      Incl.    3.15817     -0.25701927     -0.36300723             
P   3.01           H   26.57          G   0.15           U   1                  
Residuals in seconds of arc
210318 G96  0.3-  0.1-    210320 033  0.1+  0.1-    240330 F51  0.1+  0.0
210318 G96  0.1-  0.2+    210320 033  0.1-  0.3+    240330 F52  0.1-  0.0
210318 G96  0.2-  0.2-    240327 F51  0.0   0.1-    240330 F51  0.2-  0.2-
210318 I52  0.3-  0.1+    240327 F51  0.1+  0.0     240330 F52  0.3-  0.3-
210318 I52  0.4+  0.0     240327 F51  0.2-  0.5-    240330 F51  0.1+  0.2+
210319 I52  0.1+  0.5+    240328 F51  0.1+  0.1+    240330 F52  0.1+  0.1+
210319 I52  0.1-  0.1-    240328 F51  0.1+  0.2+    240330 F51  0.0   0.1+
210319 I52  0.3+  0.1+    240328 F51  0.1-  0.3+
210320 033  0.2+  0.3-    240328 F51  0.1+  0.0

Ephemeris:
2021 FD1                 a,e,i = 2.08, 0.53, 3                   q = 0.9733
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 03 01    10 25 31.3 +24 20 40   0.1859  1.1694   162.4    14.8    24.1
...
2024 03 16    10 21 40.8 +27 31 13   0.1008  1.0812   147.6    29.5    23.0
...
2024 03 24    10 24 15.6 +30 14 02   0.05918 1.0424   139.1    38.7    22.1
...
2024 03 30    10 38 44.4 +35 48 21   0.02881 1.0182   132.0    46.8    20.7
2024 03 31    10 45 41.7 +37 58 32   0.02385 1.0146   130.5    48.5    20.3
2024 04 01    10 57 09.9 +41 11 51   0.01896 1.0111   128.4    50.8    19.9
...
2024 04 07    21 22 16.4 -03 20 20   0.01392 0.9933    56.2   123.1    22.4
...
2024 04 15    21 59 15.2 -20 20 52   0.05350 0.9781    60.6   116.6    24.8
...
2024 04 30    22 13 55.1 -22 58 20   0.1279  0.9776    73.0    99.8    25.7

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-F119





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