[Iaude] MPEC X72: 2020 XP2 [a=1.03,e=0.28,i=15.8,H=22.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 3 09:09:46 EST 2021


M.P.E.C. 2021-X72                              Issued 2021 December 3, 14:08 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

                                    2020 XP2                                    


                           Revision to MPEC 2020-X89                            

Additional Observations:
     K20X02P KC2021 12 01.09124302 37 16.56 +63 46 42.7          20.92GVEX072I52
     K20X02P KC2021 12 01.09338502 37 15.67 +63 46 38.5          20.83GVEX072I52
     K20X02P KC2021 12 01.09552502 37 14.94 +63 46 34.0          20.76GVEX072I52
     K20X02P mC2021 12 02.11614302 31 21.59 +63 08 37.1          20.72GVEX072I52
     K20X02P mC2021 12 02.12279902 31 19.24 +63 08 22.4          21.92GVEX072I52
     K20X02P mC2021 12 03.08250302 25 59.92 +62 29 51.0          20.44GVEX072I52
     K20X02P mC2021 12 03.08323602 25 59.74 +62 29 49.4          20.83GVEX072I52
     K20X02P mC2021 12 03.08655302 25 58.54 +62 29 41.2          20.78GVEX072I52

Observer details:
I52 Steward Observatory, Mt. Lemmon Station.  Observer D. Rankin.  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.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
211201 I52 0.03- 0.02-    211203 I52 0.03- 0.02-    E2021-A62    +380 days

Orbital elements:
2020 XP2                                                 Earth MOID = 0.0076 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M 297.74100              (2000.0)            P               Q                  
n   0.94511458     Peri.  280.06039     -0.88344503     +0.38594093             
a   1.0283629      Node   283.04294     -0.24548115     -0.86421805             
e   0.2847156      Incl.   15.82462     -0.39907879     -0.32276424             
P   1.04           H   22.14          G   0.15           U   1                  
Residuals in seconds of arc
201207 F51  0.0   0.0     201215 033  0.1+  0.2-    201226 204  0.1+  0.0
201207 F51  0.0   0.1+    201218 I52  0.4+  0.1+    201226 G96  0.0   0.0
201207 F51  0.0   0.1+    201218 I52  0.1-  0.4-    201226 G96  0.1-  0.3+
201208 H36  0.2-  0.2-    201218 I52  0.1+  0.3-    201226 G96  0.0   0.2+
201208 H36  0.1+  0.6+    201218 I52  0.0   0.0     201226 G96  0.1-  0.2+
201208 H36  0.6+  0.2+    201218 G96  0.0   0.0     201226 I52  0.5-  0.0
201208 H36  0.3+  0.1+    201218 G96  0.1+  0.1+    201226 I52  0.2-  0.3-
201208 H36  0.4+  0.1+    201218 G96  0.0   0.0     201226 I52  0.3-  0.5-
201209 H36  0.3-  0.2-    201218 G96  0.1-  0.1+    201226 I52  0.1-  0.1-
201209 H36  0.5+  0.2-    201219 I52  0.2-  0.1+    201227 703  0.4+  2.6+
201209 H36  0.2+  0.2-    201219 I52  0.2+  0.1-    201227 703  2.0-  1.8-
201209 I52  0.2-  0.1-    201219 I52  0.2-  0.4+    201227 I52  0.1-  0.3-
201209 I52  0.1-  0.6-    201219 I52  0.3+  0.0     201227 I52  0.0   0.1+
201209 I52  0.4-  0.7-    201220 703  0.1+  0.8-    210102 I52  0.0   0.3+
201209 I52  0.1-  0.2+    201220 703  0.1-  0.5+    210102 I52  0.0   0.1-
201209 H36  0.4+  0.7-    201220 703  0.7-  0.9-    210102 I52  0.2-  0.1-
201209 H36  0.6-  0.3-    201220 703  1.1-  0.5+    210102 I52  0.1+  0.1-
201209 F51  0.1+  0.1-    201222 T08  0.6+  0.0     210103 I52 (0.2+  1.5+)
201209 F51  0.1+  0.1+    201222 T08  0.1+  0.7+    210103 I52  0.2-  0.3+
201212 I52  0.2-  0.1-    201222 T08  0.6+  0.2-    210103 I52  0.1-  0.3-
201212 I52  0.0   0.0     201222 T08  0.3-  0.1+    210103 I52  0.1-  0.1+
201212 I52  0.2-  0.2-    201222 T08  0.1-  0.7+    210107 807  0.2-  0.0
201212 I52  0.0   0.2+    201222 T08  0.0   0.4-    210107 807  0.2+  0.3+
201214 033  0.4-  0.1-    201224 703  0.2-  0.1+    210107 807  0.7+  0.1-
201214 033  0.2-  0.3-    201224 703  0.9+  0.5-    211201 I52  0.3+  0.1+
201214 033  0.4-  0.1+    201224 703 (1.8+  1.7-)   211201 I52  0.4-  0.2+
201214 033  0.1+  0.2-    201224 T05  0.3+  0.3-    211201 I52  0.0   0.1+
201214 033  0.2+  0.2+    201224 T05  0.3+  0.6-    211202 I52  0.2-  0.3-
201214 033  0.2+  0.2+    201224 T05  0.4+  0.2+    211202 I52  0.2+  0.1-
201214 033  0.2+  0.1+    201224 T05  0.2+  0.1-    211203 I52  0.2-  0.2+
201215 033  0.4-  0.1-    201226 204  0.3-  0.2+    211203 I52  0.2+  0.4+
201215 033  0.3-  0.0     201226 204  0.2+  0.1-    211203 I52  0.1-  0.0

Ephemeris:
2020 XP2                 a,e,i = 1.03, 0.28, 16                  q = 0.7356
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 03    04 59 21.3 +65 33 36   0.4160  1.2711   123.7    40.5    22.4
...
2021 11 18    03 59 19.8 +67 39 10   0.3320  1.2332   131.3    37.0    21.7
...
2021 11 26    03 08 55.6 +66 11 08   0.2936  1.2087   133.7    36.1    21.4
...
2021 12 02    02 31 59.0 +63 12 56   0.2687  1.1885   134.0    36.6    21.1
2021 12 03    02 26 24.3 +62 33 08   0.2649  1.1850   133.9    36.8    21.1
2021 12 04    02 21 02.9 +61 50 30   0.2613  1.1815   133.7    37.1    21.1
...
2021 12 10    01 54 03.1 +56 38 19   0.2418  1.1592   131.5    39.6    20.9
...
2021 12 18    01 31 32.6 +47 36 39   0.2228  1.1273   125.2    45.5    20.9
...
2022 01 02    01 18 12.2 +27 17 55   0.2080  1.0611   106.4    62.7    21.1

A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-X72




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