[Iaude] MPEC H50: 2015 KJ122 [a=0.79,e=0.75,i=5.1,H=22.0,PHA]

mpec at si.edu mpec at si.edu
Sun Apr 23 09:37:41 EDT 2017


M.P.E.C. 2017-H50                                Issued 2017 Apr. 23, 13:34 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 http://www.minorplanetcenter.net/    ISSN 1523-6714


                                  2015 KJ122
 
                          Revision to MPEC 2015-K116
 
Additional Observations:
     K15KC2J KC2017 04 21.59783817 01 25.65 -10 14 01.0          19.8 RtEH050474
     K15KC2J KC2017 04 21.60023617 01 24.48 -10 13 56.4          20.1 RtEH050474
     K15KC2J KC2017 04 21.60351217 01 22.86 -10 13 50.8          20.1 RtEH050474
     K15KC2J KC2017 04 21.60590917 01 21.68 -10 13 46.7          20.1 RtEH050474
     K15KC2J  C2017 04 22.46229 16 54 23.72 -09 48 47.6          20.7 RoEH050926
     K15KC2J  C2017 04 22.46585 16 54 21.92 -09 48 41.1          20.6 RoEH050926
     K15KC2J  C2017 04 22.46940 16 54 20.13 -09 48 34.7          20.6 RoEH050926
     K15KC2J KC2017 04 22.53105716 53 51.49 -09 46 00.5          20.5 RtEH050474
     K15KC2J KC2017 04 22.53345416 53 50.28 -09 45 56.3          20.4 RtEH050474
     K15KC2J KC2017 04 22.53585116 53 49.07 -09 45 51.8          20.4 RtEH050474
     K15KC2J  C2017 04 23.45291 16 46 14.36 -09 18 18.7          21.2 RoEH050926
     K15KC2J  C2017 04 23.45696 16 46 12.30 -09 18 11.1          21.5 RoEH050926
     K15KC2J  C2017 04 23.46100 16 46 10.25 -09 18 03.8          21.6 RoEH050926
 
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.
926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
    M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
170421 474 14.2+  5.2-    170423 926 17.3+  5.7-    MPO342336   -0.0021 day
 
Orbital elements:
2015 KJ122                                          PHA, Earth MOID = 0.0317 AU
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5                 MPC
M  13.38697              (2000.0)            P               Q
n   1.41616774     Peri.  229.67727     +0.53508749     -0.84470712
a   0.7853434      Node   188.00103     +0.79941438     +0.51099649
e   0.7503054      Incl.    5.06926     +0.27316299     +0.15922459
P   0.70           H   22.0           G   0.15           U   6
Residuals in seconds of arc
150519 F51  0.1+  0.2-    150524 926  0.3-  0.1+    150613 291  0.0   0.0
150519 F51  1.1+  0.3-    150524 926  0.2-  0.1+    150613 291  0.4-  0.7-
150520 291  0.3-  0.0     150527 291  0.2-  0.2+    150613 291  0.1-  0.0
150520 291  0.4-  0.2+    150527 291  0.0   0.0     170421 474  0.1-  0.2-
150520 291  0.0   0.2-    150527 291  0.1+  0.2-    170421 474  0.0   0.2+
150520 926  0.1+  0.2-    150527 926  0.0   0.0     170421 474  0.0   0.0
150520 926  0.0   0.1-    150527 926  0.2-  0.2+    170421 474  0.0   0.1-
150520 568  0.4-  0.1-    150527 926  0.2-  0.1+    170422 926  0.2+  0.2+
150520 568  0.4-  0.0     150529 291  0.1-  0.1-    170422 926  0.0   0.2+
150520 568  0.3-  0.1-    150529 291  0.0   0.0     170422 926  0.1-  0.1+
150520 568  0.4-  0.0     150529 291  0.1-  0.0     170422 474  0.2+  0.1-
150520 568  0.6-  0.0     150606 291  0.5+  0.4+    170422 474  0.0   0.3-
150520 568  0.5-  0.0     150606 291  0.2-  0.2+    170422 474  0.2-  0.1-
150520 568  0.4-  0.1-    150606 291  0.7+  0.4+    170423 926  0.0   0.3+
150520 568  0.5-  0.0     150609 H21  0.0   0.0     170423 926  0.1+  0.3+
150520 568  0.5-  0.0     150609 H21  0.4+  0.5+    170423 926  0.2+  0.0
150524 926  0.2+  0.4-    150609 H21  0.5-  0.5+

Ephemeris:
2015 KJ122               a,e,i = 0.79, 0.75, 5                   q = 0.1961
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 03 24    19 33 23.5 -17 49 36   0.3814  0.9452    71.1    86.4    22.8
...
2017 04 08    18 32 13.6 -15 15 26   0.3074  1.0980   100.2    63.8    21.9
...
2017 04 16    17 43 40.1 -12 42 59   0.2748  1.1634   119.4    48.7    21.3
...
2017 04 22    16 58 10.4 -10 02 23   0.2603  1.2059   135.9    35.4    20.9
2017 04 23    16 49 59.7 -09 32 00   0.2591  1.2125   138.8    33.1    20.9
2017 04 24    16 41 42.2 -09 00 49   0.2584  1.2189   141.7    30.8    20.8
...
2017 04 30    15 51 15.1 -05 45 07   0.2627  1.2545   157.9    17.6    20.5
...
2017 05 08    14 50 29.6 -01 49 12   0.2933  1.2943   164.6    11.9    20.6
...
2017 05 23    13 38 34.0 +02 03 28   0.4081  1.3469   138.9    29.6    22.0

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-H50




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