[Iaude] MPEC E54: 2018 ET1 [a=1.28,e=0.24,i=7.8,H=26.4]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Sat Mar 10 16:19:17 EST 2018


M.P.E.C. 2018-E54                                Issued 2018 Mar. 10, 21:16 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 ET1
 
Observations:
     K18E01T* C2018 03 07.23596 09 26 35.02 +50 41 49.1          21.1 GUEE054G96
     K18E01T  C2018 03 07.24118 09 26 32.20 +50 41 33.1          20.9 GUEE054G96
     K18E01T  C2018 03 07.24641 09 26 29.43 +50 41 16.9          20.7 GUEE054G96
     K18E01T  C2018 03 07.25162 09 26 26.45 +50 41 00.2          20.6 GUEE054G96
     K18E01T  C2018 03 07.33610909 25 39.86 +50 36 03.5          20.6 GUEE054H01
     K18E01T  C2018 03 07.34248509 25 36.53 +50 35 39.9          21.3 GUEE054H01
     K18E01T  C2018 03 07.34950809 25 32.85 +50 35 13.6          21.2 GUEE054H01
     K18E01T  C2018 03 07.35775309 25 28.60 +50 34 42.5          20.9 GUEE054H01
     K18E01T  C2018 03 07.38664 09 25 14.23 +50 33 01.9          21.0 GUEE054I52
     K18E01T  C2018 03 07.38830 09 25 13.44 +50 32 55.5          20.8 GUEE054I52
     K18E01T  C2018 03 07.38996 09 25 12.61 +50 32 49.4          21.8 GUEE054I52
     K18E01T  C2018 03 07.39162 09 25 11.67 +50 32 42.7          20.9 GUEE054I52
     K18E01T  C2018 03 08.31394 09 18 17.44 +49 39 03.9          20.7 GUEE054G96
     K18E01T  C2018 03 08.31469 09 18 17.02 +49 39 01.4          21.6 GUEE054G96
     K18E01T  C2018 03 08.31544 09 18 16.57 +49 38 57.0          21.2 GUEE054G96
     K18E01T  C2018 03 08.31620 09 18 16.09 +49 38 54.3          21.2 GUEE054G96
     K18E01T  C2018 03 10.25170 09 00 36.85 +46 57 58.3          19.8 GUEE054I52
     K18E01T  C2018 03 10.25229 09 00 36.47 +46 57 54.9          20.1 GUEE054I52
     K18E01T  C2018 03 10.25288 09 00 35.98 +46 57 50.9          20.0 GUEE054I52
     K18E01T  C2018 03 10.25347 09 00 35.49 +46 57 46.5          20.7 GUEE054I52
 
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, J. A. Johnson,
    R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.
    1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers B. M. Africano,
    D. C. Fuls, J. A. Johnson.  Measurers B. M. Africano, E. J. Christensen,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.  1.0-m reflector
    + CCD.
 
Orbital elements:
2018 ET1                                                 Earth MOID = 0.0050 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 347.43242              (2000.0)            P               Q
n   0.67775228     Peri.  208.78385     -0.92043618     +0.39065115
a   1.2835774      Node   354.16030     -0.32776352     -0.79046790
e   0.2388533      Incl.    7.76366     -0.21299838     -0.47175436
P   1.45           H   26.4           G   0.15           U   6
Residuals in seconds of arc
180307 G96  0.1-  0.4+    180307 H01  0.8+  0.3+    180308 G96  0.5+  0.4-
180307 G96  0.2+  0.3+    180307 I52  0.4-  0.7-    180308 G96  0.2+  0.2+
180307 G96  1.1+  0.2+    180307 I52  0.2+  0.6-    180310 I52  0.0   0.1-
180307 G96  0.1-  0.3-    180307 I52  0.3+  0.2-    180310 I52  0.8+  0.3+
180307 H01  0.6+  0.3+    180307 I52  0.7-  0.3-    180310 I52  0.5+  0.2+
180307 H01  0.7+  0.3+    180308 G96  0.2+  0.1-    180310 I52  0.2+  0.3-
180307 H01  0.6+  0.2+    180308 G96  0.5+  0.6+

Ephemeris:
2018 ET1                 a,e,i = 1.28, 0.24, 8                   q = 0.9770
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 02 08    10 33 46.1 +52 03 13   0.1375  1.0962   140.7    34.8    23.7
...
2018 02 23    10 15 39.9 +54 08 15   0.08194 1.0497   135.8    41.0    22.7
...
2018 03 03    09 50 16.0 +53 02 44   0.05417 1.0284   132.2    45.6    21.9
...
2018 03 09    09 12 41.7 +48 49 34   0.03401 1.0144   128.7    49.8    20.9
2018 03 10    09 03 17.2 +47 22 29   0.03075 1.0122   127.9    50.7    20.7
2018 03 11    08 52 28.5 +45 30 04   0.02755 1.0101   127.0    51.8    20.5
...
2018 03 17    06 57 19.7 +08 07 34   0.01203 0.9987   108.0    71.4    19.3
...
2018 03 25    02 24 37.6 -59 27 03   0.02576 0.9870    66.1   112.5    22.7
...
2018 04 09    00 01 37.9 -60 19 59   0.07499 0.9771    69.0   106.9    24.7

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-E54



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