[Iaude] MPEC X100: 2003 YR1 [a=0.90,e=0.45,i=29.3,H=22.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu Dec 10 14:42:59 EST 2020


M.P.E.C. 2020-X100                            Issued 2020 December 10, 19:41 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

                                    2003 YR1                                    


                           Revision to MPEC 2003-Y27                            

Additional Observations:
     K03Y01R  C2020 12 09.25082904 05 57.87 -14 41 08.8          20.66GVEX100G96
     K03Y01R  C2020 12 09.25598904 05 55.57 -14 40 55.3          21.19GVEX100G96
     K03Y01R  C2020 12 09.26115104 05 53.22 -14 40 41.4                VEX100G96
     K03Y01R  C2020 12 09.26630704 05 50.89 -14 40 27.7          20.55GVEX100G96
     K03Y01R KC2020 12 09.32011004 05 26.50 -14 38 01.5          20.43GVEX100I52
     K03Y01R KC2020 12 09.32263104 05 25.36 -14 37 54.8          20.18GVEX100I52
     K03Y01R KC2020 12 09.32515104 05 24.19 -14 37 48.1          20.84GVEX100I52
     K03Y01R KC2020 12 09.57492804 03 33.53 -14 25 45.9          20.5 GVEX100474
     K03Y01R KC2020 12 09.57848504 03 31.92 -14 25 36.0          20.0 GVEX100474
     K03Y01R mC2020 12 10.16817803 59 11.36 -13 58 44.4          22.06GVEX100G96
     K03Y01R mC2020 12 10.16858603 59 11.13 -13 58 43.3          21.40GVEX100G96
     K03Y01R mC2020 12 10.16899103 59 10.96 -13 58 42.4                VEX100G96

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, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector +
    10K CCD.
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, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m reflector +
    CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
201209 G96   16-    6-    201210 G96   16-    7-    MPO 58085   -7.01 days

Orbital elements:
2003 YR1                                                 Earth MOID = 0.0665 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 249.62450              (2000.0)            P               Q
n   1.15628880     Peri.  138.05249     -0.62817603     +0.60530084
a   0.8989975      Node    86.41107     -0.77782291     -0.50440772
e   0.4508713      Incl.   29.33025     +0.01965706     -0.61577897
P   0.85           H   22.1           G   0.15           U   3
Residuals in seconds of arc
031218 704  0.4+  1.0+    031219 557  0.2+  0.3-    031221 J95  0.1-  0.1-
031218 704  0.5+  0.9+    031219 557  0.0   0.4-    031221 J95  0.2-  0.2+
031218 704  0.5+  0.2+    031219 557  0.1+  0.0     031221 J95  0.3-  0.2+
031218 704  0.3+  0.4+    031219 557  0.2-  0.2-    031224 649  0.6-  0.5-
031218 704  0.3+  0.4+    031219 649  0.1+  0.4+    031224 649  0.8-  0.4-
031218 246  0.5+  0.3-    031219 649  0.1+  0.1+    031224 649  0.6-  0.2-
031218 246  0.3+  1.3-    031219 649  0.0   0.2-    201209 G96  0.4-  0.2+
031218 246  0.4+  0.7-    031219 926  0.5+  0.3-    201209 G96  0.1+  0.1-
031218 246  0.1-  0.8-    031219 926  0.0   0.4+    201209 G96  0.0   0.1-
031218 246  0.3-  1.1-    031219 926  0.7+  0.6-    201209 G96  0.1+  0.2-
031218 246  0.1-  1.3-    031220 J95  0.5+  0.4+    201209 I52  0.1+  0.5+
031218 246  0.2-  0.4-    031220 J95  0.1-  0.3+    201209 I52  0.2+  0.4+
031218 246  0.0   0.5-    031220 J95  0.2+  0.1-    201209 I52  0.3-  0.3+
031219 557  0.4+  0.0     031221 649  0.0   0.7+    201209 474  0.1+  0.3+
031219 557  0.1-  0.5-    031221 649  0.0   0.3+    201209 474  0.1+  0.3+
031219 557  0.0   0.0     031221 649  0.3-  0.8+    201210 G96  0.2+  0.0
031219 557  0.4-  0.3-    031221 649  0.8-  0.7-    201210 G96  0.4-  0.0
031219 557  0.0   0.7-    031221 649  0.1+  0.3+    201210 G96  0.2-  0.3-

Ephemeris:
2003 YR1                 a,e,i = 0.90, 0.45, 29                  q = 0.4937
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 10    06 16 11.4 -20 01 32   0.4635  1.2832   119.4    42.2    22.6
...
2020 11 25    05 31 22.5 -20 23 25   0.3408  1.2468   133.6    35.0    21.7
...
2020 12 03    04 48 42.3 -18 18 57   0.2889  1.2199   139.5    31.6    21.2
...
2020 12 09    04 07 48.5 -14 51 54   0.2609  1.1963   139.9    32.0    20.9
2020 12 10    04 00 25.8 -14 06 21   0.2573  1.1921   139.4    32.5    20.9
2020 12 11    03 52 56.6 -13 17 40   0.2542  1.1878   138.8    33.1    20.9
...
2020 12 17    03 07 03.7 -07 27 52   0.2432  1.1602   131.7    39.3    20.9
...
2020 12 25    02 09 44.4 +01 38 29   0.2494  1.1188   116.9    51.6    21.2
...
2021 01 09    00 50 49.0 +16 12 18   0.3046  1.0263    89.4    73.4    22.1

A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-X100




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