[Iaude] MPEC X145: 2002 AB2 [a=0.84,e=0.38,i=13.1,H=23.3]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Tue Dec 7 10:07:59 EST 2021


M.P.E.C. 2021-X145                             Issued 2021 December 7, 15:06 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  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

                                    2002 AB2                                    


                           Revision to MPEC 2002-A33                            

Additional Observations:
     K02A02B  C2021 12 06.29090804 51 18.77 -15 43 18.1          21.40GVEX145G96
     K02A02B  C2021 12 06.29856404 51 15.91 -15 43 04.9          20.90GVEX145G96
     K02A02B  C2021 12 06.30417404 51 13.86 -15 42 54.6          21.53GVEX145G96
     K02A02B  C2021 12 06.30977304 51 11.75 -15 42 45.7          21.42GVEX145G96
     K02A02B  C2021 12 06.32495604 51 05.95 -15 42 20.4          21.4 GVEX145H01
     K02A02B  C2021 12 06.32957204 51 04.22 -15 42 12.8          20.8 GVEX145H01
     K02A02B  C2021 12 06.33883104 51 00.77 -15 41 56.7          21.0 GVEX145H01
     K02A02B  C2021 12 06.35000804 50 56.62 -15 41 37.6          20.8 GVEX145H01
     K02A02B KC2021 12 07.53575304 43 52.07 -15 05 48.1          21.2 GVEX145474
     K02A02B KC2021 12 07.53931004 43 50.76 -15 05 41.6          21.1 GVEX145474
     K02A02B KC2021 12 07.54286804 43 49.44 -15 05 34.7          21.4 GVEX145474
     K02A02B KC2021 12 07.54642704 43 48.12 -15 05 28.1          21.2 GVEX145474

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.
G96 Mt. Lemmon Survey.  Observer K. W. Wierzchos.  Measurers E. J.
    Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
    Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 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
211206 G96   15-    4-    211207 474   16-    4-    MPO 24030   -5.14 days

Orbital elements:
2002 AB2                                                 Earth MOID = 0.0489 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M 238.48317              (2000.0)            P               Q                  
n   1.27829899     Peri.  149.56540     -0.28583582     +0.93248922             
a   0.8408420      Node   103.05620     -0.91854394     -0.20094245             
e   0.3842691      Incl.   13.10172     -0.27308408     -0.30014329             
P   0.77           H   23.31          G   0.15           U   2                  
Residuals in seconds of arc
020107 704  1.0+  0.2+    020108 649  0.7-  0.2-    020114 587 (2.4+  0.6+)
020107 704  0.2-  0.2+    020108 704  0.4+  0.1+    020114 587 (3.8+  0.1+)
020107 704  0.1-  0.1+    020108 046  0.1+  0.7-    020118 649  0.4+  0.6+
020107 704  0.0   0.4-    020108 046  1.2-  1.0+    020118 649  0.4-  0.3+
020108 704  0.2-  0.6-    020108 046  0.1-  0.2-    020118 649  0.3-  0.5+
020108 704  0.1+  0.5+    020108 046  0.6-  0.4+    211206 G96  0.2-  0.4-
020108 704  1.1+  1.4-    020108 046  0.0   0.1+    211206 G96  0.3-  0.1-
020108 704  0.5+  0.2-    020108 046  1.2-  0.8+    211206 G96  0.3+  0.7+
020108 704  0.5+  0.1-    020108 046  1.1-  0.1+    211206 G96  0.0   0.1+
020108 704  1.3-  1.2+    020109 587  0.2+  0.2-    211206 H01  0.2+  0.1+
020108 704  0.8+  0.3+    020109 587  0.1+  0.2+    211206 H01  0.0   0.1-
020108 704  1.3+  0.1+    020109 587  0.3-  0.8+    211206 H01  0.0   0.0
020108 704  0.2+  0.2+    020109 599 (2.1-  0.1+)   211206 H01  0.2+  0.1-
020108 704  0.5+  0.2+    020109 599  0.2-  0.9-    211207 474  0.1-  0.2-
020108 704  0.0   0.2+    020110 599 (1.7+  0.8+)   211207 474  0.0   0.2-
020108 704  0.2+  0.6-    020114 649  0.2+  0.7-    211207 474  0.0   0.1+
020108 649  0.7+  0.2-    020114 649  0.0   0.4-    211207 474  0.0   0.1+
020108 649 (1.8+  1.2+)   020114 649  0.1+  0.2-
020108 649  0.4-  0.2+    020114 587  0.3-  0.5+

Ephemeris:
2002 AB2                 a,e,i = 0.84, 0.38, 13                  q = 0.5177
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 07    06 56 34.7 -17 48 28   0.2970  1.1279   110.0    55.6    23.0
...
2021 11 22    06 08 15.8 -19 05 46   0.2452  1.1554   128.2    42.2    22.2
...
2021 11 30    05 27 59.8 -18 00 09   0.2254  1.1623   137.4    35.1    21.8
...
2021 12 06    04 53 03.2 -15 50 57   0.2175  1.1639   141.7    31.7    21.7
2021 12 07    04 47 04.7 -15 22 18   0.2169  1.1639   142.0    31.4    21.7
2021 12 08    04 41 06.5 -14 51 43   0.2165  1.1638   142.2    31.2    21.7
...
2021 12 14    04 06 20.4 -11 13 33   0.2184  1.1614   140.6    32.5    21.7
...
2021 12 22    03 26 28.1 -05 28 15   0.2319  1.1535   132.7    38.8    22.0
...
2022 01 06    02 38 59.4 +04 58 44   0.2809  1.1242   113.2    53.5    22.8

A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-X145




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