[Iaude] MPEC E91: 2018 ER3 [a=2.02,e=0.49,i=5.2,H=25.6]

[mpec at mpcdb1.cfa.harvard.edu]

M.P.E.C. 2018-E91                                Issued 2018 Mar. 13, 22:35 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 ER3
 
Observations:
     K18E03R* C2018 03 07.33874 11 37 04.733+20 41 52.17         21.9 wUEE091F51
     K18E03R  C2018 03 07.35039 11 37 08.970+20 42 27.10         21.9 wUEE091F51
     K18E03R  C2018 03 07.37366 11 37 17.495+20 43 37.73         22.1 wUEE091F51
     K18E03R KC2018 03 09.28509611 50 32.80 +22 18 31.9          22.1 VuEE091H21
     K18E03R KC2018 03 09.29454511 50 36.71 +22 19 00.3          21.8 VuEE091H21
     K18E03R KC2018 03 09.30600811 50 41.44 +22 19 34.7          22.2 VuEE091H21
     K18E03R KC2018 03 13.26805012 24 15.66 +25 45 35.5          22.0 VuEE091H21
     K18E03R KC2018 03 13.27883812 24 21.43 +25 46 08.7          21.9 VuEE091H21
 
Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
    M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
    M. Huber, E. Magnier, Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.
    1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
    astrograph + CCD, 1.3-m f/4.0 astrograph + CCD.
 
Orbital elements:
2018 ER3                                                 Earth MOID = 0.0780 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 354.92912              (2000.0)            P               Q
n   0.34282171     Peri.   51.75577     -0.93970779     +0.33852775
a   2.0218884      Node   147.94789     -0.33530901     -0.88423540
e   0.4852104      Incl.    5.23910     -0.06720960     -0.32175568
P   2.87           H   25.6           G   0.15           U   8
Residuals in seconds of arc
180307 F51  0.0   0.0     180309 H21  0.4+  0.4+    180313 H21  0.4+  0.3+
180307 F51  0.4-  0.3-    180309 H21  0.1+  0.1+    180313 H21  0.4-  0.3-
180307 F51  0.3+  0.3+    180309 H21  0.5-  0.3-

Ephemeris:
2018 ER3                 a,e,i = 2.02, 0.49, 5                   q = 1.0408
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 02 11    10 16 52.4 +08 39 05   0.2304  1.2138   168.8     9.1    23.4
...
2018 02 26    10 51 52.9 +14 19 26   0.1487  1.1378   173.2     5.9    22.2
...
2018 03 06    11 28 41.0 +19 38 14   0.1160  1.1045   165.1    13.4    21.9
...
2018 03 12    12 12 34.6 +24 39 41   0.09742 1.0834   156.2    21.7    21.8
2018 03 13    12 21 42.0 +25 31 58   0.09492 1.0803   154.5    23.3    21.8
2018 03 14    12 31 23.6 +26 23 44   0.09262 1.0773   152.7    25.0    21.7
...
2018 03 20    13 41 07.5 +30 48 03   0.08316 1.0615   140.8    36.4    21.8
...
2018 03 28    15 28 45.7 +31 54 58   0.08296 1.0472   124.5    51.8    22.2
...
2018 04 12    17 42 29.6 +23 26 12   0.1103  1.0426   108.5    65.7    23.2

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-E91