[Iaude] MPEC L68: 2018 LD4 [a=2.10,e=0.51,i=10.0,H=24.8]

Wed Jun 13 10:31:18 EDT 2018

M.P.E.C. 2018-L68                                Issued 2018 June 13, 14:26 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


                                   2018 LD4
 
Observations:
     K18L04D* C2018 06 11.22999 13 01 06.34 +11 09 24.5          21.0 GUEL068G96
     K18L04D  C2018 06 11.23524 13 01 08.19 +11 08 08.0          20.1 GUEL068G96
     K18L04D  C2018 06 11.24052 13 01 10.02 +11 06 51.9          20.9 GUEL068G96
     K18L04D  C2018 06 11.29305 13 01 29.00 +10 54 05.5          19.7 GUEL068I52
     K18L04D  C2018 06 11.29484 13 01 29.60 +10 53 39.3          20.1 GUEL068I52
     K18L04D  C2018 06 11.29663 13 01 30.32 +10 53 13.6                UEL068I52
     K18L04D  C2018 06 11.29842 13 01 30.91 +10 52 46.9          19.9 GUEL068I52
     K18L04D  C2018 06 12.15776 13 07 42.46 +07 11 54.0          19.9 GUEL068I52
     K18L04D  C2018 06 12.15872 13 07 42.83 +07 11 38.5          20.7 GUEL068I52
     K18L04D  C2018 06 12.16177 13 07 44.01 +07 10 48.5          20.6 GUEL068I52
     K18L04D  C2018 06 12.16273 13 07 44.37 +07 10 33.2          20.6 GUEL068I52
     K18L04D  C2018 06 12.20694 13 08 01.48 +06 58 23.0          20.4 GUEL068G96
     K18L04D  C2018 06 12.21267 13 08 03.72 +06 56 49.1          20.5 GUEL068G96
     K18L04D  C2018 06 12.21840 13 08 05.96 +06 55 14.1          20.4 GUEL068G96
     K18L04D  C2018 06 12.22414 13 08 08.25 +06 53 38.7          20.3 GUEL068G96
     K18L04D KC2018 06 12.94714 13 13 49.64 +03 23 20.4                VEL068J95
     K18L04D KC2018 06 12.95260 13 13 52.15 +03 21 40.7                VEL068J95
     K18L04D KC2018 06 12.96182 13 13 56.42 +03 18 51.3          19.8 GVEL068J95
     K18L04D  C2018 06 13.29200 13 16 39.96 +01 36 52.4          21.7 GUEL068I52
     K18L04D  C2018 06 13.29290 13 16 40.30 +01 36 35.2          20.5 GUEL068I52
     K18L04D  C2018 06 13.29379 13 16 40.78 +01 36 18.3          20.7 GUEL068I52
     K18L04D  C2018 06 13.29468 13 16 41.20 +01 36 01.5          19.9 GUEL068I52
 
Observer details:
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers B. M. Africano,
    E. J. Christensen, 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 D. C. Fuls,
    B. M. Africano.  Measurers B. M. Africano, E. J. Christensen, 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.
J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
    + CCD.
 
Orbital elements:
2018 LD4                                                 Earth MOID = 0.0211 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 335.93490              (2000.0)            P               Q
n   0.32479892     Peri.  168.27235     -0.33453284     +0.92649332
a   2.0960083      Node    81.99668     -0.87808157     -0.24005882
e   0.5083997      Incl.   10.02197     -0.34214110     -0.28979629
P   3.03           H   24.8           G   0.15           U   5
Residuals in seconds of arc
180611 G96  0.0   0.4+    180612 I52  0.1+  0.1-    180612 J95  0.2-  0.3+
180611 G96  0.2+  0.1-    180612 I52  0.3+  0.0     180612 J95  0.4+  0.4-
180611 G96  0.1-  0.4+    180612 I52  0.2+  0.4+    180613 I52  1.0+  0.2-
180611 I52  0.5+  0.3-    180612 G96  0.1+  0.8-    180613 I52  0.4-  0.2-
180611 I52  0.4-  0.3-    180612 G96  0.0   0.1+    180613 I52  0.5+  0.1-
180611 I52  0.4+  0.3+    180612 G96  0.2-  0.1+    180613 I52  0.4+  0.1+
180611 I52  0.7-  0.2-    180612 G96  0.1+  0.0
180612 I52  0.1+  0.3-    180612 J95  0.4-  0.2+

Ephemeris:
2018 LD4                 a,e,i = 2.10, 0.51, 10                  q = 1.0304
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 05 14    11 58 07.0 +42 57 12   0.1778  1.0641   102.8    67.9    23.6
...
2018 05 29    12 13 25.3 +36 02 34   0.1096  1.0340    97.8    76.2    22.7
...
2018 06 06    12 34 52.7 +25 55 53   0.07280 1.0305   100.5    75.5    21.8
...
2018 06 12    13 06 33.9 +07 55 59   0.04882 1.0338   110.8    66.7    20.7
2018 06 13    13 14 20.8 +03 09 52   0.04567 1.0348   113.8    63.9    20.4
2018 06 14    13 23 11.4 -02 16 20   0.04294 1.0360   117.2    60.6    20.2
...
2018 06 20    14 51 19.8 -43 06 13   0.03975 1.0460   137.9    40.6    19.5
...
2018 06 28    18 35 36.9 -66 10 30   0.06692 1.0665   137.1    40.5    20.7
...
2018 07 13    21 17 04.6 -60 57 30   0.1431  1.1248   136.6    38.4    22.4

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-L68