[Iaude] MPEC A129: 2018 EA1 [a=1.11,e=0.48,i=14.7,H=20.8]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Tue Jan 8 21:59:17 EST 2019


M.P.E.C. 2019-A129                               Issued 2019 Jan.  9, 02:55 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 EA1
 
                           Revision to MPEC 2018-E40
 
Additional Observations:
     K18E01A KC2019 01 04.36417910 30 30.18 +37 22 52.4          22.3 VuEA129H21
     K18E01A KC2019 01 04.37840610 30 28.35 +37 23 04.7          21.7 VuEA129H21
     K18E01A KC2019 01 04.39039410 30 26.83 +37 23 15.1          22.2 VuEA129H21
     K18E01A  C2019 01 08.54020 10 21 05.38 +38 23 41.1          21.9 GVEA129V06
     K18E01A  C2019 01 08.54349 10 21 04.87 +38 23 44.0          22.8 GVEA129V06
     K18E01A  C2019 01 08.55030 10 21 03.86 +38 23 49.9          21.7 GVEA129V06
 
Observer details:
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.81-m f/4.0
    astrograph + CCD.
V06 Catalina Sky Survey-Kuiper.  Observer A. R. Gibbs.  Measurers
    B. M. Africano, E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs,
    A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard,
    R. L. Seaman, F. C. Shelly.  1.55-m reflector + CCD.
 
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
190104 H21  3.3+  3.6+    190108 V06  3.0+  3.6+    MPO450735   +0.0049 day
 
Orbital elements:
2018 EA1                                                 Earth MOID = 0.1750 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M 220.08588              (2000.0)            P               Q
n   0.84568753     Peri.  333.31282     +0.78338008     +0.61929240
a   1.1074635      Node   347.97702     -0.51526953     +0.59953732
e   0.4798243      Incl.   14.69603     -0.34758159     +0.50698316
P   1.17           H   20.8           G   0.15           U   4
Residuals in seconds of arc
180307 F51  0.0   0.2-    180308 291  0.0   0.2-    180320 691  0.4-  0.4+
180307 F51  0.1+  0.2-    180309 691  0.3-  0.1-    180320 691  0.4-  0.4+
180307 F51  0.0   0.1-    180309 691  0.2+  0.1+    180405 H21  0.2-  0.3-
180307 I52  0.1-  0.4+    180312 I52  0.3-  0.3-    180405 H21  0.2-  0.3-
180307 I52  0.3-  0.4-    180312 I52  0.2-  0.0     180405 H21  0.0   0.8-
180307 I52  0.9-  0.5+    180312 I52  0.2+  0.5-    180411 H21  0.6-  1.1+
180307 I52  0.2+  0.3+    180312 I52  0.3+  0.0     180411 H21  0.0   0.8+
180307 H01  0.2+  0.1-    180316 G96  0.3+  0.5-    180511 807  0.2-  0.1+
180307 H01  0.0   0.2-    180316 G96  0.4-  0.1+    180511 807  0.5+  0.0
180307 H01  0.1+  0.2-    180316 G96  0.2-  0.1+    180511 807  0.5+  0.1+
180307 H01  0.3+  0.2-    180316 G96  0.6-  0.3-    190104 H21  0.3+  0.3+
180308 807  0.9+  0.5-    180320 I52  0.3-  0.1-    190104 H21  0.0   0.0
180308 807 (1.8+  0.6-)   180320 I52  0.2-  0.2-    190104 H21  0.1+  0.2-
180308 807  0.9+  0.4-    180320 I52  0.3+  0.1-    190108 V06  0.2-  0.1-
180308 291  0.1-  0.3+    180320 I52  0.4+  0.1-    190108 V06  0.2-  0.0
180308 291  0.5+  0.1+    180320 691  0.2+  0.2+    190108 V06  0.2+  0.3+

Ephemeris:
2018 EA1                 a,e,i = 1.11, 0.48, 15                  q = 0.5761
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 12 10    10 51 59.0 +32 18 45   0.7984  1.4176   104.8    42.2    22.7
...
2018 12 25    10 46 00.9 +34 56 56   0.7227  1.4857   120.3    34.9    22.4
...
2019 01 02    10 35 00.0 +36 48 14   0.6869  1.5167   129.6    30.0    22.2
...
2019 01 08    10 22 25.4 +38 15 54   0.6649  1.5376   136.9    25.9    22.0
2019 01 09    10 19 57.2 +38 30 14   0.6618  1.5409   138.1    25.2    22.0
2019 01 10    10 17 22.7 +38 44 20   0.6589  1.5441   139.3    24.5    22.0
...
2019 01 16    09 59 48.4 +40 01 56   0.6454  1.5624   146.4    20.4    21.8
...
2019 01 24    09 31 46.2 +41 12 40   0.6399  1.5836   153.7    16.0    21.7
...
2019 02 08    08 36 07.4 +40 52 56   0.6743  1.6140   152.3    16.5    21.9

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-A129



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