MPC Preparation(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 theTamkin 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 entryinto the Earth's atmosphere on 2018 June 2.  A news item on the event is inpreparation by JPL's Center for Near-Earth Object Studies.  The orbit below,based on only the given astrometric observations, indicates that the objectreached 50-km height above the Earth's surface around 16:51 UTC over southernAfrica.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 oUEL004T08Observer 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                                                  EarthMOID = 0.0000 AUEpoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPCM 282.84309              (2000.0)            P               Qn   0.61405312     Peri.  256.08498     +0.84516929     +0.52977474a   1.3708778      Node    71.88175     -0.45706629     +0.78511420e   0.4289022      Incl.    4.27851     -0.27709072     +0.32083394P   1.61           H   30.6           G   0.15           U   6Residuals in seconds of arc180602 G96  0.2-  0.0     180602 I52  0.4+  0.1+    180602 G96  0.5+  0.0180602 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-  0.02018 LAEpoch 2018 June 1.0 TT = JDT 2458270.5                  MPCM 325.87894              (2000.0)            P               Qn   0.61340064     Peri.  256.09466     +0.84517929     +0.52974648a   1.3718498      Node    71.87389     -0.45699922     +0.78513487e   0.4294998      Incl.    4.28426     -0.27717087     +0.32083002P   1.61           H   30.6           G   0.15           U   6Ephemeris:2018 LA                  a,e,i = 1.37, 0.43, 4                   q = 0.7829Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V2018 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    19.9Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-L04

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• 1997-B01 (the full form)
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