• Processing (Info)

    • MPEC 2018-L04 : 2018 LA

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    M.P.E.C. 2018-L04                                Issued 2018 June 3, 16:15 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 LA

     This object no longer exists (in its original form), following its entry
into the Earth's atmosphere on 2018 June 2.  A news item on the event is in
preparation by JPL's Center for Near-Earth Object Studies.  The orbit below,
based on only the given astrometric observations, indicates that the object
reached 50-km height above the Earth's surface around 16:51 UTC over southern
Africa.

Observations:
     K18L00A* C2018 06 02.34330 16 11 10.34 -11 19 34.7                UEL004G96
     K18L00A  C2018 06 02.34851 16 10 59.30 -11 20 21.6          18.2 GUEL004G96
     K18L00A  C2018 06 02.35373 16 10 48.15 -11 21 08.9          18.3 GUEL004G96
     K18L00A  C2018 06 02.35895 16 10 36.57 -11 21 57.6          18.0 GUEL004G96
     K18L00A  C2018 06 02.39785 16 09 02.60 -11 28 26.0          17.5 GUEL004I52
     K18L00A  C2018 06 02.39804 16 09 02.13 -11 28 28.1          17.2 GUEL004I52
     K18L00A  C2018 06 02.39822 16 09 01.62 -11 28 30.1          17.5 GUEL004I52
     K18L00A  C2018 06 02.39840 16 09 01.15 -11 28 31.8          17.7 GUEL004I52
     K18L00A  C2018 06 02.40223 16 08 51.04 -11 29 13.6          17.7 GUEL004G96
     K18L00A  C2018 06 02.40233 16 08 50.78 -11 29 15.1          17.9 GUEL004G96
     K18L00A  C2018 06 02.40242 16 08 50.58 -11 29 16.1          17.8 GUEL004G96
     K18L00A  C2018 06 02.40251 16 08 50.28 -11 29 16.8          17.8 GUEL004G96
     K18L00A  C2018 06 02.49263 16 06 03.77 -11 44 01.9          17.5 oUEL004T08
     K18L00A  C2018 06 02.50096 16 05 20.09 -11 46 56.2          17.3 oUEL004T08

Observer details:
G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  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.  Observer J. A. Johnson.
    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.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, A. Heinze, H. Weiland,
    J. Tonry.  Measurers L. Denneau, H. Flewelling, A. Heinze, B. Stalder,
    J. Tonry.  0.5-m f/2.0 Schmidt + CCD.

Orbital elements:
2018 LA                                                  Earth MOID = 0.0000 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 282.84309              (2000.0)            P               Q
n   0.61405312     Peri.  256.08498     +0.84516929     +0.52977474
a   1.3708778      Node    71.88175     -0.45706629     +0.78511420
e   0.4289022      Incl.    4.27851     -0.27709072     +0.32083394
P   1.61           H   30.6           G   0.15           U   6
Residuals in seconds of arc
180602 G96  0.2-  0.0     180602 I52  0.4+  0.1+    180602 G96  0.5+  0.0
180602 G96  0.7-  0.3-    180602 I52  0.2-  0.1+    180602 G96  0.4-  0.3+
180602 G96  1.0+  0.3-    180602 I52  0.2-  0.3+    180602 T08  0.0   1.1-
180602 G96  0.0   0.8-    180602 G96  0.2-  0.4+    180602 T08  0.1+  0.6+
180602 I52  0.0   0.2+    180602 G96  0.1-  0.0

2018 LA
Epoch 2018 June 1.0 TT = JDT 2458270.5                  MPC
M 325.87894              (2000.0)            P               Q
n   0.61340064     Peri.  256.09466     +0.84517929     +0.52974648
a   1.3718498      Node    71.87389     -0.45699922     +0.78513487
e   0.4294998      Incl.    4.28426     -0.27717087     +0.32083002
P   1.61           H   30.6           G   0.15           U   6

Ephemeris:
2018 LA                  a,e,i = 1.37, 0.43, 4                   q = 0.7829
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 05 04    16 13 49.3 -11 12 56   0.2258  1.2199   157.5    18.4    28.7
...
2018 05 19    16 16 39.2 -10 35 54   0.1065  1.1159   167.7    11.2    26.7
...
2018 05 27    16 16 36.2 -10 23 10   0.04795 1.0602   169.2    10.3    24.8
...
2018 06 02    16 14 29.5 -10 30 20   0.0050791.0190   167.0    12.9    19.9

Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-L04

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