[Iaude] MPEC D132: 2021 OP1 [a=1.37,e=0.14,i=20.9,H=22.91]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-D132                            Issued 2024 February 28, 14:07 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.
			  
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                              MPC at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2021 OP1                                    


                           Revision to MPEC 2021-P09                            

Additional Observations:
     K21O01P 0C2024 02 06.51480410 14 43.618+00 05 24.23         23.77GVED132T12
     K21O01P 0C2024 02 06.55154710 14 38.188+00 04 39.41         23.93GVED132T12
     K21O01P 0C2024 02 07.60110010 12 07.305-00 16 36.14         23.86GVED132T12
     K21O01P 0C2024 02 07.63732410 12 01.910-00 17 20.04         23.74GVED132T12

Observer details:
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, reference and Delta-T
240206 T12 17.4- 14.9-    240207 T12 17.7- 15.0-    E2023-Y86   +0.02 days

Orbital elements:
2021 OP1                                                 Earth MOID = 0.1797 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 251.54960              (2000.0)            P               Q                  
n   0.61192642     Peri.  340.25405     +0.42367846     +0.86841365             
a   1.3740522      Node   313.80133     -0.77570653     +0.20099890             
e   0.1361757      Incl.   20.91017     -0.46773491     +0.45327384             
P   1.61           H   22.91          G   0.15           U   2                  
Residuals in seconds of arc
210708 F51  0.2+  0.1-    210801 F51  0.1-  0.5-    210809 033  0.0   0.2+
210708 F51  0.0   0.3+    210801 F51  0.0   0.2-    210816 F51  0.0   0.0
210708 F51  0.0   0.2+    210801 033  0.0   0.1-    210816 F51  0.0   0.0
210708 F51  0.1-  0.3-    210801 033  0.1-  0.1-    210816 F51  0.1-  0.1+
210731 F51  0.2-  0.0     210802 H21  0.6+  0.1-    210816 F51  0.2+  0.1-
210731 F51  0.0   0.1-    210802 H21  0.9+  0.0     240206 T12  0.1+  0.1+
210731 F51  0.3-  0.2+    210802 H21  0.4+  0.5-    240206 T12  0.0   0.0
210801 F51  0.1-  0.2+    210809 033  0.0   0.0     240207 T12  0.0   0.1+
210801 F51  0.9-  0.6+    210809 033  0.1-  0.0     240207 T12  0.0   0.0

Ephemeris:
2021 OP1                 a,e,i = 1.37, 0.14, 21                  q = 1.1869
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 01 29    10 32 41.1 +03 00 23   0.6060  1.5365   149.0    19.2    23.7
...
2024 02 13    09 58 28.6 -02 02 58   0.5484  1.5215   163.8    10.4    23.2
...
2024 02 21    09 37 05.3 -04 26 24   0.5405  1.5122   162.1    11.6    23.2
...
2024 02 27    09 21 27.0 -05 57 53   0.5449  1.5046   156.1    15.4    23.3
2024 02 28    09 18 57.5 -06 11 35   0.5464  1.5033   155.0    16.2    23.4
2024 02 29    09 16 30.6 -06 24 49   0.5481  1.5019   153.8    17.0    23.4
...
2024 03 06    09 02 55.8 -07 34 46   0.5629  1.4937   146.4    21.6    23.6
...
2024 03 14    08 48 30.5 -08 44 44   0.5924  1.4820   136.7    27.4    23.9
...
2024 03 29    08 34 17.2 -10 07 36   0.6671  1.4580   120.9    36.0    24.3

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-D132