[Iaude] MPEC S262: 2021 TO15 [a=1.01,e=0.42,i=7.8,H=25.22]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2023-S262                           Issued 2023 September 29, 14:06 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 TO15                                    


                           Revision to MPEC 2021-T307                           

Additional Observations:
     K21T15O 0C2022 10 23.28833122 26 36.762-24 36 06.99         22.50GVES262T12
     K21T15O 0C2022 10 23.28995422 26 35.456-24 36 07.93         22.38GVES262T12
     K21T15O 0C2023 09 11.47648401 19 00.577-13 20 40.02         25.29GVES262T12

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 (or two decimals in degrees), reference and Delta-T
221023 T12 0.03+ 0.01+    230911 T12 0.08+ 0.05+    E2023-R32   +0.03 days

Orbital elements:
2021 TO15                                                Earth MOID = 0.0083 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 243.15887              (2000.0)            P               Q                  
n   0.97050523     Peri.  109.26855     -0.80817633     -0.58371924             
a   1.0103476      Node    35.14321     +0.47631621     -0.72597300             
e   0.4209406      Incl.    7.81285     +0.34637248     -0.36364138             
P   1.02           H   25.22          G   0.15           U   2                  
Residuals in seconds of arc
211004 F52  0.0   0.4-    211014 F52  0.1-  0.1+    211014 L01  0.5+  0.6-
211004 F52  0.2-  0.2+    211014 F52  0.0   0.2-    211015 807  0.3-  0.2-
211004 F52  0.1+  0.1-    211014 G96  0.1+  0.0     211015 807  0.2+  0.2+
211004 F52  0.2+  0.1-    211014 G96  0.1+  0.5-    211015 807  0.4+  0.9+
211006 F51  0.1-  0.0     211014 G96  0.3-  0.7+    211025 807  0.1-  0.4+
211006 F51  0.2+  0.0     211014 G96  0.5-  0.1+    211025 807  1.0+  0.0
211014 G96  0.1+  0.3-    211014 L01  0.6+  0.6-    211025 807  0.9-  0.5-
211014 G96  0.2-  0.4+    211014 L01  0.0   0.6-    221023 T12  0.0   0.0
211014 G96  0.8-  0.0     211014 L01  0.2-  0.4-    221023 T12  0.0   0.1-
211014 G96  0.3-  0.1+    211014 L01  0.0   0.1-    230911 T12  0.0   0.2+

Ephemeris:
2021 TO15                a,e,i = 1.01, 0.42, 8                   q = 0.5851
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 08 30    01 32 12.8 -09 55 45   0.4370  1.3564   135.5    31.5    25.4
...
2023 09 14    01 14 07.5 -14 12 32   0.3272  1.3025   151.2    21.8    24.4
...
2023 09 22    00 52 20.3 -17 17 07   0.2800  1.2680   158.0    17.2    23.9
...
2023 09 28    00 28 53.3 -19 44 17   0.2516  1.2395   158.3    17.4    23.6
2023 09 29    00 24 21.4 -20 08 19   0.2474  1.2345   157.7    17.9    23.6
2023 09 30    00 19 38.9 -20 31 58   0.2435  1.2295   157.0    18.6    23.6
...
2023 10 06    23 47 55.7 -22 39 32   0.2240  1.1979   149.2    25.3    23.5
...
2023 10 14    22 59 00.1 -24 21 45   0.2086  1.1523   133.9    38.6    23.7
...
2023 10 29    21 29 14.0 -23 00 08   0.2050  1.0561   102.2    66.8    24.3

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-S262