[Iaude] MPEC M24: 2018 LZ13 [a=1.35,e=0.30,i=66.4,H=20.5]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu Jun 18 11:01:29 EDT 2020


M.P.E.C. 2020-M24                                 Issued 2020 June 18, 15:00 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 LZ13                                    


                           Revision to MPEC 2018-M36                            

Additional Observations:
     K18L13Z  C2019 03 08.23772702 41 16.399+13 27 48.74         22.45GVEM024T12
     K18L13Z  C2019 03 08.24170702 41 17.392+13 27 38.88         22.31GVEM024T12
     K18L13Z  C2019 03 08.24636202 41 18.547+13 27 27.10         22.62GVEM024T12
     K18L13Z  C2019 03 09.24713502 45 26.430+12 45 45.16         22.39GVEM024T12
     K18L13Z  C2019 03 09.25032502 45 27.209+12 45 37.22         22.51GVEM024T12
     K18L13Z  C2019 03 09.25382802 45 28.058+12 45 28.40         22.45GVEM024T12
     K18L13Z  C2020 06 17.60883401 30 19.020+63 58 38.28         23.10GVEM024T14
     K18L13Z  C2020 06 17.61140701 30 20.178+63 58 43.28         22.98GVEM024T14
     K18L13Z  C2020 06 17.61397501 30 21.336+63 58 48.12         23.83GVEM024T14

Observer details:
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Fohring, D. J.
    Tholen.  Measurer D. J. Tholen.  2.24-m f/10.1 reflector + CCD.
T14 Mauna Kea-UH/Tholen NEO Follow-Up (CFHT).  Observer C. Wipper.  Measurer
    D. J. Tholen.  3.6-m f/4.1 reflector + MegaCam.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
190308 T12 10.2+ 38.1+    200617 T14 64.2+  7.8+    MPO477906   +0.04 days

Orbital elements:
2018 LZ13                                           PHA, Earth MOID = 0.0317 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
M 286.94929              (2000.0)            P               Q
n   0.62498516     Peri.  171.11079     -0.10537500     -0.41566282
a   1.3548449      Node   279.69128     +0.84674270     +0.43887130
e   0.2997615      Incl.   66.41576     +0.52146228     -0.79662815
P   1.58           H   20.5           G   0.15           U   0
Residuals in seconds of arc
180613 F51  0.4+  0.0     180617 291  0.1-  0.0     180805 291  0.1+  0.0
180613 F51  0.2-  0.1+    180617 291  0.2+  0.2-    180805 291  0.3-  0.1+
180615 F51  0.1-  0.1-    180617 568  0.1-  0.1+    180805 291  0.1+  0.0
180615 F51  0.1+  0.1+    180617 568  0.0   0.0     180811 T12  0.0   0.1+
180615 F51  0.1-  0.2+    180617 568  0.1-  0.1+    180811 T12  0.1-  0.0
180617 807  0.1+  0.1-    180618 H21  0.0   0.3+    190308 T12  0.0   0.1-
180617 807  0.3+  0.2-    180618 H21  0.0   0.4+    190308 T12  0.0   0.1+
180617 807  0.1+  0.2-    180618 H21  0.2-  0.8+    190308 T12  0.0   0.0
180617 807  0.1-  0.2-    180619 291  0.3-  0.6+    190309 T12  0.0   0.0
180617 807  0.3-  0.2-    180619 291  0.3+  0.3+    190309 T12  0.0   0.0
180617 H21  0.1+  0.3-    180619 291  0.2+  0.7+    190309 T12  0.0   0.0
180617 H21  0.1+  0.2-    180621 T12  0.1+  0.1-    200617 T14  0.0   0.0
180617 H21  0.0   0.1+    180622 T12  0.0   0.0     200617 T14  0.0   0.0
180617 291  0.3+  0.1-    180622 T12  0.1-  0.0     200617 T14  0.1-  0.1-
180617 291  0.2-  0.6+    180622 T12  0.0   0.0

Ephemeris:
2018 LZ13                a,e,i = 1.35, 0.30, 66                  q = 0.9487
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 05 19    23 06 24.3 +42 23 23   1.5689  1.4084    61.8    39.3    23.8
...
2020 06 03    00 02 40.6 +54 17 35   1.5059  1.3431    60.8    41.2    23.6
...
2020 06 11    00 45 11.6 +60 00 28   1.4917  1.3070    59.3    41.9    23.6
...
2020 06 17    01 25 42.6 +63 38 56   1.4889  1.2795    57.8    42.2    23.5
2020 06 18    01 33 17.8 +64 10 55   1.4890  1.2749    57.5    42.3    23.5
2020 06 19    01 41 07.7 +64 41 26   1.4893  1.2703    57.3    42.3    23.5
...
2020 06 25    02 33 07.2 +67 09 31   1.4938  1.2425    55.5    42.4    23.5
...
2020 07 03    03 51 56.1 +68 36 15   1.5060  1.2053    52.9    42.3    23.4
...
2020 07 18    06 06 50.6 +65 38 01   1.5379  1.1369    47.7    41.4    23.3

A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-M24




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