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    • MPEC 2018-R89 : 2018 RN2

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    M.P.E.C. 2018-R89                                Issued 2018 Sept.  9, 20:45 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@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                   2018 RN2

Observations:
     K18R02N* C2018 09 07.11594 20 33 36.18 -08 33 05.9          20.4 GVER089G96
     K18R02N  C2018 09 07.12151 20 33 27.91 -08 32 08.6          19.8 GVER089G96
     K18R02N  C2018 09 07.12709 20 33 19.53 -08 31 09.6                VER089G96
     K18R02N  C2018 09 07.13268 20 33 11.21 -08 30 11.8          20.3 GVER089G96
     K18R02N  C2018 09 07.17788 20 32 03.36 -08 22 18.3          18.5 GVER089I52
     K18R02N  C2018 09 07.17885 20 32 01.90 -08 22 08.1          17.9 GVER089I52
     K18R02N  C2018 09 07.17982 20 32 00.46 -08 21 58.1          18.4 GVER089I52
     K18R02N KC2018 09 07.42542320 26 04.11 -07 35 20.6          19.8 GVER089474
     K18R02N KC2018 09 07.42727420 26 01.33 -07 35 01.5          19.7 GVER089474
     K18R02N KC2018 09 07.42789120 26 00.39 -07 34 54.0          20.1 GVER089474
     K18R02N KC2018 09 07.42850920 25 59.48 -07 34 47.2          20.2 GVER089474
     K18R02N KC2018 09 07.85251320 15 48.35 -06 22 47.1          20.0 GVER089L01
     K18R02N KC2018 09 07.85340320 15 47.06 -06 22 37.0          20.0 GVER089L01
     K18R02N  C2018 09 08.11708 20 09 32.79 -05 34 36.7          20.0 GVER089I52
     K18R02N  C2018 09 08.11768 20 09 31.90 -05 34 30.4                VER089I52
     K18R02N  C2018 09 08.11824 20 09 31.04 -05 34 24.5                VER089I52
     K18R02N  C2018 09 08.11881 20 09 30.25 -05 34 17.1                VER089I52
     K18R02N KC2018 09 08.82135 19 52 48.97 -03 27 28.9          20.5 GVER089595
     K18R02N KC2018 09 08.82708 19 52 40.65 -03 26 27.2          20.5 GVER089595
     K18R02N KC2018 09 08.85392 19 52 02.22 -03 21 36.0          20.3 GVER089204
     K18R02N HC2018 09 08.86862 19 51 40.87 -03 18 56.2                VER089204

Observer details:
204 Schiaparelli Observatory.  Observer L. Buzzi.  0.84-m f/3.5 reflector
    + CCD.
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.
595 Farra d'Isonzo.  Observers U. Montanar, E. Pettarin, F. Piani.  Measurer
    E. Pettarin.  0.61-m f/4.0 reflector + CCD.
G96 Mt. Lemmon Survey.  Observer B. M. Africano.  Measurers B. M. Africano,
    E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
    H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
    R. L. Seaman, F. C. Shelly.  1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers J. A. Johnson,
    G. J. Leonard.  Measurers B. M. Africano, E. J. Christensen, G. A. Farneth,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson,
    R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.
    1.0-m reflector + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.

Orbital elements:
2018 RN2                                                 Earth MOID = 0.0354 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M  52.78465              (2000.0)            P               Q
n   1.19103853     Peri.  141.03132     -0.53420271     -0.84046121
a   0.8814253      Node   340.71708     +0.69036836     -0.37171764
e   0.3492089      Incl.   15.96720     +0.48787190     -0.39427267
P   0.83           H   24.9           G   0.15           U   8
Residuals in seconds of arc
180907 G96  0.4-  0.2+    180907 474  0.2+  0.2-    180908 I52  0.1+  0.3-
180907 G96  0.4+  0.5-    180907 474  0.0   0.8-    180908 I52  0.3-  0.5-
180907 G96  0.1-  0.4+    180907 474  0.3-  0.1+    180908 I52  0.6+  0.7+
180907 G96  0.6+  0.1-    180907 474  0.1-  0.3+    180908 595  0.4+  0.5+
180907 I52  0.1-  0.3+    180907 L01  0.7-  0.4-    180908 595  0.6+  0.0
180907 I52  0.2-  0.3+    180907 L01  0.2-  0.1+    180908 204  0.3-  0.2-
180907 I52  0.1+  0.2+    180908 I52  0.1+  0.1-    180908 204  0.5-  0.0

Ephemeris:
2018 RN2                 a,e,i = 0.88, 0.35, 16                  q = 0.5736
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 08 10    00 56 16.9 -26 09 47   0.2004  1.1489   128.4    43.8    23.4
...
2018 08 25    00 02 16.4 -25 18 33   0.1058  1.1043   150.7    26.7    21.4
...
2018 09 02    22 25 06.0 -19 52 48   0.06619 1.0738   167.4    11.8    19.9
...
2018 09 08    20 12 18.1 -05 54 15   0.05408 1.0479   137.1    40.9    20.3
2018 09 09    19 48 39.6 -02 53 20   0.05449 1.0433   130.1    47.6    20.5
2018 09 10    19 25 53.5 +00 04 11   0.05561 1.0387   123.3    54.2    20.7
...
2018 09 16    17 40 10.9 +13 14 27   0.07374 1.0094    90.9    84.9    22.2
...
2018 09 24    16 27 08.1 +20 21 46   0.1121  0.9666    67.9   106.0    24.0
...
2018 10 09    15 22 54.7 +23 25 43   0.1947  0.8759    46.3   124.5    26.3

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-R89

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