[Iaude] MPEC O62: 2021 OS [a=0.81,e=0.43,i=15.5,H=22.03]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Sat Jul 27 10:13:36 EDT 2024


M.P.E.C. 2024-O62                                 Issued 2024 July 27, 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 OS                                     


                           Revision to MPEC 2021-O32                            

Additional Observations:
     K21O00S  C2013 08 09.50833521 51 54.180+35 27 24.63         19.92GVEO062F51
     K21O00S  C2013 08 09.52319321 51 46.300+35 27 35.48         20.11GVEO062F51
     K21O00S  C2013 08 09.53532821 51 39.893+35 27 44.12         20.06GVEO062F51
     K21O00S  C2013 08 15.44902021 03 03.909+35 43 34.65         19.89GVEO062F51
     K21O00S  C2013 08 15.45969321 02 58.700+35 43 29.82         19.95GVEO062F51
     K21O00S  C2013 08 20.43007720 27 11.845+34 37 33.80         20.86GVEO062F51

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.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
130809 F51 0.03+ 0.01+    130820 F51 0.03+ 0.02+    MPO845915   +0.01 days

Orbital elements:
2021 OS                                                  Earth MOID = 0.0090 AU
Epoch 2024 Oct. 17.0 TT = JDT 2460600.5                 Veres                   
M 270.85615              (2000.0)            P               Q                  
n   1.35031883     Peri.  218.09406     -0.86598184     -0.43718809             
a   0.8106720      Node   294.31807     +0.49870016     -0.71901684             
e   0.4325442      Incl.   15.45124     +0.03706201     -0.54026045             
P   0.73           H   22.03          G   0.15           U   1                  
Residuals in seconds of arc
130809 F51  0.1+  0.2-    210719 160  0.3+  0.0     210720 J69  0.1-  0.1-
130809 F51  0.0   0.1-    210719 J95  0.2+  0.2+    210720 B72  0.0   0.1+
130809 F51  0.1+  0.0     210719 160  0.1-  0.4-    210720 J69  0.1+  0.0
130815 F51  0.1+  0.0     210719 160  0.1+  0.1-    210720 J69  0.0   0.2+
130815 F51  0.1-  0.1-    210719 J95  0.1+  0.1-    210720 K87  0.2-  0.7-
130820 F51  0.1-  0.2-    210719 160  0.4-  0.4-    210720 K87  0.5-  0.1-
210718 T08  0.2-  0.5+    210719 Z99  0.2+  0.0     210720 K87  0.2-  0.1-
210718 T08  0.4+  0.3-    210719 Z99  0.2+  0.1-    210720 K74  0.4-  0.0
210718 T08  0.3+  0.2+    210719 Z80  0.4+  0.0     210720 K74  0.3-  0.1+
210718 T08  0.3-  0.1+    210719 Z99  0.1-  0.1-    210720 K74  0.1-  0.0
210718 587  0.0   0.1-    210719 Z99  0.3+  0.1-    210721 K74  0.3-  0.1+
210718 587  0.1+  0.1+    210719 Z80  0.3-  0.0     210721 K74  0.3-  0.1+
210718 587  0.0   0.2+    210719 Z80  0.3-  0.0     210721 K74  0.1-  0.2+
210718 587  0.1-  0.3+    210720 K38  0.2-  0.0     210721 K74  0.1+  0.0
210719 K88  0.1+  0.1+    210720 K38  0.2-  0.0     210721 Z80  0.1-  0.4+
210719 K88  0.6+  0.0     210720 K38  0.2-  0.2-    210721 Z80  0.7-  0.5-
210719 K88  0.7+  0.0     210720 G40  0.2+  0.5+    210721 Z80  0.2-  0.2+
210719 K88  0.1+  0.1+    210720 G40  0.1-  0.4+    210721 K87  0.7-  0.1+
210719 K88  0.4+  0.3-    210720 L81  0.2-  0.0     210721 K87  0.9-  0.1+
210719 K88  0.1+  0.2-    210720 L81  0.2-  0.1-    210721 K87  0.7-  0.0
210719 J95  0.1+  0.1-    210720 L81  0.2-  0.1+    210722 J95  0.2+  0.1-
210719 J95  0.1+  0.2+    210720 G40  0.1+  0.0     210722 J95  0.1-  0.2-
210719 J95  0.0   0.3+    210720 G40  0.1+  0.2-    210722 J95  0.0   0.1-
210719 J95  0.1+  0.2-    210720 G40  0.1-  0.2+    210722 J95  0.1+  0.1-
210719 J95  0.3+  0.2-    210720 H36  1.0-  0.2+    210722 Z80  0.1-  0.1+
210719 G40  0.4+  0.0     210720 H36  1.2-  0.4+    210722 Z80  0.7+  0.4-
210719 G40  0.6+  0.1-    210720 H36  1.4-  0.3+    210722 Z80  0.6+  0.8-
210719 L81  0.6-  0.3-    210720 H21  0.1-  0.1-    210722 L18  0.3-  0.2+
210719 L81  0.0   0.7-    210720 H21  0.2-  0.1-    210722 L18  0.1-  0.1+
210719 L81  0.3-  0.0     210720 H21  0.1-  0.1-    210722 L18  0.5-  0.3+
210719 L81  0.2-  0.5-    210720 H21  0.2-  0.0     210723 L18 (1.5-  0.4-)
210719 H36  1.0-  0.1-    210720 T05  0.1+  0.2-    210723 L18  0.2+  0.9-
210719 H36  0.8-  0.1+    210720 T05  0.1-  0.2+    210723 L18  0.4-  0.1+
210719 H36  0.9-  0.2+    210720 T05  0.4+  0.1-    210724 Z80  0.4-  0.1-
210719 H36  1.1-  0.0     210720 T05  0.3+  0.0     210724 Z80  0.3-  0.5-
210719 U55  0.6+  0.7+    210720 900  0.1-  0.0     210724 Z80  0.2-  0.4-
210719 U55  0.0   0.2+    210720 900  0.2+  0.3+    210726 F65  0.1-  0.1-
210719 U55  0.8+  1.1+    210720 900  0.1-  0.2+    210726 F65  0.1-  0.1+
210719 H21  0.3+  0.1+    210720 Q21  0.0   0.1+    210726 F65  0.1-  0.0
210719 H21  0.3+  0.2+    210720 Q21  0.2+  0.0     210728 160  0.2+  0.2+
210719 H21  0.3+  0.1+    210720 B72  0.5+  0.3-    210728 160  0.1+  0.1+
210719 H21  0.2+  0.0     210720 G34 (0.7-  1.0-)   210728 160  0.0   0.3+
210719 H21  0.2+  0.0     210720 G34  0.3+  0.1+    210729 A17  0.1-  0.6+
210719 A17  0.2+  0.1+    210720 B72  0.6+  0.1+    210729 A17  0.3+  0.3-
210719 A17  0.4+  0.3+    210720 G34  0.1+  0.6-    210729 A17  0.2+  0.3+
210719 A17  0.6+  0.3+    210720 G34  0.3-  0.5-    210729 L18  0.1+  0.1-
210719 595  0.4-  0.0     210720 B72  0.5+  0.1-    210729 L18  0.3-  0.3+
210719 A17  0.3+  0.5+    210720 B72  0.4+  0.6-    210729 L18  0.2-  0.6+
210719 595  0.3+  0.0     210720 Z80  0.2+  0.3+    210803 T08  0.0   0.1+
210719 595  0.3+  0.0     210720 Z80  0.2+  0.2+    210803 T08  0.1+  0.1+
210719 Z80  0.2+  0.3+    210720 Z80  0.8-  0.0     210803 T08  0.2-  0.1-
210719 Z80  0.2+  0.1-    210720 J95  0.1+  0.1-    210803 T08  0.6+  0.1-
210719 L01  0.1-  0.0     210720 J95  0.0   0.1-    210904 T12  0.0   0.0
210719 L01  0.2-  0.0     210720 J95  0.1+  0.1+    210904 T12  0.1-  0.0
210719 L01  0.2-  0.1+    210720 B72  0.4-  0.1+    210904 T12  0.0   0.0
210719 L01  0.2-  0.1-    210720 J95  0.0   0.1-    210905 695  0.1-  0.2+
210719 L01  0.1+  0.1+    210720 B72  0.1+  0.5-    210905 695  0.1-  0.0
210719 L01  0.1-  0.0     210720 J69  0.0   0.2+    210905 695  0.1-  0.1-
210719 J95  0.4+  0.0     210720 B72  0.2+  0.1-    211015 695  0.1+  0.1+
210719 160  0.2-  0.2+    210720 B72  0.3-  0.4-    211015 695  0.1+  0.2+
210719 J95  0.1-  0.0     210720 B72  0.0   0.0     211015 695  0.2+  0.0

Ephemeris:
2021 OS                  a,e,i = 0.81, 0.43, 15                  q = 0.4600
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 06 27    00 44 57.8 +10 46 24   0.5157  1.0655    81.0    70.4    23.2
...
2024 07 12    00 51 33.9 +19 22 42   0.4622  1.1192    90.3    65.3    22.9
...
2024 07 20    00 52 49.4 +24 34 57   0.4292  1.1389    95.3    62.7    22.7
...
2024 07 26    00 52 00.9 +28 50 52   0.4036  1.1496    98.9    60.8    22.5
2024 07 27    00 51 41.3 +29 35 32   0.3993  1.1510    99.5    60.5    22.5
2024 07 28    00 51 17.8 +30 20 48   0.3951  1.1524   100.1    60.2    22.5
...
2024 08 03    00 47 20.8 +35 05 11   0.3698  1.1585   103.5    58.4    22.3
...
2024 08 11    00 36 15.8 +41 57 20   0.3379  1.1613   107.6    56.3    22.0
...
2024 08 26    23 41 43.9 +55 36 04   0.2902  1.1502   111.8    54.7    21.6

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-O62





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