[Iaude] MPEC X49: 2016 XR1 [a=1.16,e=0.13,i=11.6,H=24.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu Dec 2 09:31:36 EST 2021


M.P.E.C. 2021-X49                              Issued 2021 December 2, 14:30 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

                                    2016 XR1                                    


                           Revision to MPEC 2016-X49                            

Additional Observations:
     K16X01R  C2021 12 01.32913607 51 14.32 +22 13 44.0          21.10GVEX049V00
     K16X01R  C2021 12 01.33400707 51 14.10 +22 14 06.5          21.72GVEX049V00
     K16X01R  C2021 12 01.33886707 51 13.85 +22 14 29.2          21.57GVEX049V00
     K16X01R  C2021 12 01.49104607 51 05.69 +22 26 08.1          21.78GVEX049V00
     K16X01R  C2021 12 01.49589807 51 05.41 +22 26 30.2          22.15GVEX049V00
     K16X01R  C2021 12 01.50074907 51 05.18 +22 26 52.2          21.43GVEX049V00
     K16X01R  C2021 12 01.50560507 51 04.90 +22 27 14.2          21.94GVEX049V00
     K16X01R mC2021 12 02.36780907 50 35.94 +23 33 13.6          21.79GVEX049V00
     K16X01R mC2021 12 02.36834607 50 35.91 +23 33 15.9          21.58GVEX049V00
     K16X01R mC2021 12 02.36888607 50 35.87 +23 33 18.5          21.30GVEX049V00
     K16X01R mC2021 12 02.36942607 50 35.84 +23 33 21.1          21.71GVEX049V00

Observer details:
V00 Kitt Peak-Bok.  Observer R. A. Mastaler.  Measurers M. J. Brucker, E. J.
    Christensen, C. E. Woodward, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
    Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. S.
    McMillan, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  2.25-m
    reflector + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
211201 V00 3.55+ 0.34+    211202 V00 3.62+ 0.26+    MPO394913   +0.81 days

Orbital elements:
2016 XR1                                                 Earth MOID = 0.0962 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres
M 100.67634              (2000.0)            P               Q
n   0.79107677     Peri.  286.52802     +0.98098405     -0.00652929
a   1.1578624      Node    74.16816     +0.09296454     +0.89313555
e   0.1281447      Incl.   11.63211     -0.17037570     +0.44974021
P   1.25           H   24.2           G   0.15           U   4
Residuals in seconds of arc
161204 G96  0.4-  0.2-    161205 H01  0.0   0.0     161210 I52  0.1-  0.4-
161204 G96  0.3+  0.2+    161205 H01  0.1-  0.0     161210 I52  0.2+  0.1+
161204 G96  0.1-  0.0     161205 926  0.8+  0.7+    161210 I52  0.5+  0.3+
161204 G96  0.2-  0.1-    161205 926  0.5-  0.0     161210 I52  0.3+  0.6-
161204 I52  0.2-  0.2-    161205 926  0.0   0.3+    161218 I52  0.2-  0.2-
161204 I52  0.5-  0.5+    161205 I52  0.2+  0.4-    161218 I52  0.1-  0.9-
161204 G96  0.1-  0.2+    161205 I52  0.1-  0.2-    161218 I52  0.8-  0.1+
161204 G96  0.6+  0.1-    161205 I52  0.2-  0.2-    161218 I52  0.5-  1.0-
161204 G96  0.0   0.1-    161205 I52  0.0   0.3+    161225 H21  0.6+  0.6+
161204 G96  0.1+  0.1-    161205 K51  0.5-  0.4+    161225 H21  0.3+  0.2+
161204 033  0.1-  0.1-    161205 K51  0.2-  0.1+    161225 H21  0.1-  0.4+
161204 033  0.0   0.3+    161205 K51  0.0   0.1-    161225 H21  0.3-  0.2+
161204 033  0.2-  0.3+    161205 587  0.2-  1.0+    211201 V00  0.3-  0.1+
161204 J95  0.1+  0.2+    161205 587  0.6+  0.1+    211201 V00  0.0   0.0
161204 J95  0.2+  0.4-    161207 204  0.1-  0.0     211201 V00  0.1-  0.1+
161205 033  0.2-  0.1+    161207 204  0.3+  0.2+    211201 V00  0.1+  0.2-
161205 033  0.5-  0.1-    161207 204  0.3-  0.2-    211201 V00  0.2-  0.1-
161205 033  0.1-  0.1-    161208 I52  0.3+  0.4+    211201 V00  0.3+  0.1-
161205 033  0.1-  0.2+    161208 I52  0.0   0.3-    211201 V00  0.0   0.2-
161205 033  0.2+  0.0     161208 I52  0.3-  0.2-    211202 V00  0.1+  0.1-
161205 033  0.9+  0.6+    161209 G96  0.4-  0.0     211202 V00  0.1+  0.3-
161205 033  0.5+  0.2-    161209 G96  0.2-  0.2+    211202 V00  0.0   0.2-
161205 H01  0.0   0.1-    161209 G96  0.2-  0.2+    211202 V00  0.1+  0.1-
161205 H01  0.1-  0.1-    161209 G96  0.1-  0.1-

Ephemeris:
2016 XR1                 a,e,i = 1.16, 0.13, 12                  q = 1.0095
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 02    07 33 41.1 -07 00 42   0.1948  1.0481   101.3    68.2    23.1
...
2021 11 17    07 49 25.8 +05 43 12   0.1714  1.0733   115.3    56.4    22.6
...
2021 11 25    07 52 35.2 +14 27 35   0.1621  1.0883   125.0    48.0    22.2
...
2021 12 01    07 51 22.6 +21 48 51   0.1581  1.1001   133.0    41.0    22.0
2021 12 02    07 50 48.6 +23 05 09   0.1578  1.1021   134.3    39.8    22.0
2021 12 03    07 50 07.9 +24 21 55   0.1575  1.1041   135.7    38.6    21.9
...
2021 12 09    07 43 32.3 +32 04 03   0.1585  1.1162   143.4    31.8    21.8
...
2021 12 17    07 27 44.2 +41 36 09   0.1669  1.1327   150.7    25.1    21.7
...
2022 01 01    06 41 31.3 +53 34 10   0.2038  1.1635   149.5    25.4    22.2

A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-X49




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