[Iaude] MPEC F23: 2017 KN4 [a=1.71,e=0.40,i=8.5,H=20.7]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Mon Mar 18 06:43:16 EDT 2019


M.P.E.C. 2019-F23                                Issued 2019 Mar. 18, 10:41 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


                                   2017 KN4
 
                           Revision to MPEC 2017-K37
 
Additional Observations:
     K17K04N  C2015 12 14.37938006 25 39.780+20 45 06.22         22.6 GVEF023F51
     K17K04N  C2015 12 14.38068706 25 39.623+20 45 06.78               VEF023F51
     K17K04N  C2015 12 14.39144006 25 38.428+20 45 11.20         23.7 GVEF023F51
     K17K04N  C2015 12 14.40350006 25 37.068+20 45 16.51         23.2 GVEF023F51
     K17K04N  C2015 12 14.41687306 25 35.551+20 45 22.52         21.4 GVEF023F51
     K17K04N  C2016 01 14.41736905 36 01.414+23 40 13.73         23.3 GVEF023F51
     K17K04N  C2017 03 07.57073615 05 40.694-03 10 49.51         24.1 GVEF023F51
     K17K04N  C2017 03 07.58397415 05 41.261-03 10 45.89         24.4 GVEF023F51
     K17K04N  C2017 03 07.59719515 05 41.710-03 10 42.89         22.7 GVEF023F51
     K17K04N  C2017 04 07.52853015 11 28.875+00 28 43.54         21.9 GVEF023F51
     K17K04N  C2017 04 07.53991615 11 28.503+00 28 49.86         22.9 GVEF023F51
     K17K04N  C2017 04 07.55131015 11 28.139+00 28 56.43         21.3 GVEF023F51
     K17K04N  C2017 04 07.56270915 11 27.787+00 29 02.91         22.3 GVEF023F51
 
Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
    E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
    Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
151214 F51 31.4+  4.8+    170407 F51  0.4-  0.1+    MPO428357   +0.016 day
 
Orbital elements:
2017 KN4                                                 Earth MOID = 0.0603 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M 264.16300              (2000.0)            P               Q
n   0.44100547     Peri.  225.41761     +0.78344438     +0.60385021
a   1.7093857      Node    96.88282     -0.52000070     +0.76640237
e   0.4030068      Incl.    8.50914     -0.34031482     +0.21907152
P   2.23           H   20.7           G   0.15           U   1
Residuals in seconds of arc
151214 F51  0.0   0.2+    170520 I52  0.1-  0.3+    170530 705  0.1-  0.2-
151214 F51  0.2-  0.2+    170520 I52  1.5+  0.1+    170602 807  0.5-  0.1-
151214 F51  0.1+  0.1-    170520 I52 (3.2+  0.2+)   170602 807  0.2-  0.0
151214 F51  0.1+  0.1-    170521 926  0.3-  0.2+    170602 807  0.0   0.2-
151214 F51  0.0   0.1+    170521 I52  0.2-  0.2-    170602 807  0.2-  0.5-
160114 F51  0.0   0.3+    170521 I52  0.4+  0.5+    170602 807  0.2+  0.2-
170307 F51  0.2-  0.0     170521 926  0.8+  0.4-    170602 807  0.3+  0.0
170307 F51  0.5+  0.3+    170521 I52  0.2+  0.1+    170602 291  0.3-  0.3+
170307 F51  0.6-  0.0     170521 I52  0.0   0.5+    170602 291  0.2-  0.3+
170407 F51  0.0   0.2+    170521 926  0.4+  0.4+    170602 291  0.1-  0.4+
170407 F51  0.2-  0.1-    170522 I52  0.4-  0.1-    170615 691  0.1-  0.5-
170407 F51  0.3-  0.1-    170522 I52  0.3+  0.0     170615 691  0.2-  0.1+
170407 F51  0.1-  0.2-    170522 I52  0.2+  1.1-    170619 I52  0.1+  0.4-
170518 F51  0.3-  0.1-    170522 291  0.2-  0.1+    170619 I52  0.3-  0.3-
170518 F51  0.1-  0.0     170522 291  0.2+  0.1+    170619 I52  0.1-  0.3-
170518 F51  0.2-  0.2+    170522 291  0.1+  0.1-    170714 807  0.2-  0.1+
170519 H21  0.0   0.3+    170523 I52  0.1-  0.5-    170714 807  0.1-  0.1+
170519 H21  0.2+  0.3+    170523 I52  0.5-  0.6+    170714 807  0.7-  0.4+
170519 H21  0.1+  0.1+    170523 I52  0.8+  0.1-    170820 807  0.4+  0.3+
170519 691  0.2+  0.3-    170523 I52  0.1-  0.2-    170820 807  0.3+  0.8+
170519 568  0.1-  0.1-    170524 I52  0.3-  0.1+    170820 807  0.7+  0.5+
170519 568  0.1-  0.1-    170524 I52  0.1+  0.5-    170821 807  0.2-  0.1+
170519 568  0.2-  0.1-    170524 I52  0.1-  0.2-    171020 807  0.1-  0.0
170519 691  0.1+  0.3+    170524 I52  0.2-  0.1-    171020 807  0.1+  0.2-
170519 691  0.1+  0.4+    170528 807  0.1-  0.3-    171020 807  0.0   0.3-
170519 926  0.6+  0.3+    170528 807  0.0   0.0     171024 807  0.2-  0.0
170519 926  0.1+  0.5-    170528 807  0.3-  0.1+    171024 807  0.1-  0.2+
170519 926  0.0   0.2+    170528 I52  0.3+  0.1+    171024 807  0.1-  0.1+
170520 926  0.1+  0.1+    170528 I52  0.6+  0.2+    171119 807  0.3+  0.1+
170520 926  0.2-  0.4-    170528 I52  0.4+  0.1+    171119 807  0.1+  0.3+
170520 691  0.4+  0.1+    170528 I52  0.1+  0.0     171119 807  0.2+  0.4+
170520 691  0.4+  0.1+    170530 705  0.0   0.0
170520 926  0.0   0.3-    170530 705  0.3-  0.1-

Ephemeris:
2017 KN4                 a,e,i = 1.71, 0.40, 9                   q = 1.0205
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2019 02 16    12 33 19.5 +10 41 36   1.3877  2.2461   141.4    15.9    24.0
...
2019 03 03    12 21 43.5 +13 28 44   1.2580  2.2058   157.3    10.0    23.6
...
2019 03 11    12 12 28.8 +15 04 21   1.2117  2.1823   163.5     7.4    23.3
...
2019 03 17    12 04 32.2 +16 13 12   1.1885  2.1638   164.6     7.0    23.3
2019 03 18    12 03 09.3 +16 24 09   1.1856  2.1607   164.4     7.1    23.3
2019 03 19    12 01 45.6 +16 34 55   1.1829  2.1575   164.1     7.3    23.3
...
2019 03 25    11 53 13.7 +17 34 48   1.1729  2.1380   160.2     9.1    23.3
...
2019 04 02    11 41 56.1 +18 38 47   1.1742  2.1107   152.3    12.7    23.4
...
2019 04 17    11 23 58.4 +19 38 11   1.2162  2.0560   135.5    20.0    23.7

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-F23



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