[Iaude] MPEC X122: 2018 XE4 [a=1.58,e=0.44,i=3.0,H=26.4]

[mpec at mpcdb1.cfa.harvard.edu]

M.P.E.C. 2018-X122                               Issued 2018 Dec. 15, 04:11 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 XE4
 
Observations:
     K18X04E* C2018 12 13.44552 03 54 27.239+23 59 32.29         21.8 wUEX122F51
     K18X04E  C2018 12 13.45815 03 54 24.862+23 59 02.01         22.0 wUEX122F51
     K18X04E  C2018 12 13.47077 03 54 22.482+23 58 31.13         21.9 wUEX122F51
     K18X04E KC2018 12 14.19778 03 52 39.54 +23 28 56.5          20.8 RoEX122691
     K18X04E KC2018 12 14.22835 03 52 33.17 +23 27 39.1          21.8 RoEX122691
     K18X04E KC2018 12 14.25888 03 52 26.88 +23 26 20.3          21.5 RoEX122691
     K18X04E KC2018 12 14.83741503 50 54.97 +22 59 41.8          21.6 GVEX122L01
     K18X04E KC2018 12 14.84209203 50 54.01 +22 59 29.3          21.5 GVEX122L01
     K18X04E pC2018 12 14.84326003 50 53.73 +22 59 26.4          21.5 GVEX122L01
 
Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch.  Observer M. T. Read.  0.9-m
    f/3 reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
    M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, J. Fairlamb,
    H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
    R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
 
Orbital elements:
2018 XE4                                                 Earth MOID = 0.0080 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  42.18659              (2000.0)            P               Q
n   0.49582865     Peri.  237.85191     -0.78858895     -0.61270541
a   1.5809385      Node   264.30994     +0.58035824     -0.71355233
e   0.4428540      Incl.    3.00411     +0.20325302     -0.33975749
P   1.99           H   26.4           G   0.15           U   6
Residuals in seconds of arc
181213 F51  0.0   0.3-    181214 691  0.2+  0.6+    181214 L01  0.4+  0.8-
181213 F51  0.2+  0.0     181214 691  1.0-  0.2+    181214 L01  0.7+  0.3-
181213 F51  0.0   0.0     181214 691  0.5-  0.2+    181214 L01  0.2+  0.0

Ephemeris:
2018 XE4                 a,e,i = 1.58, 0.44, 3                   q = 0.8808
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 11 15    04 20 10.5 +28 38 51   0.2592  1.2391   162.7    13.7    24.7
...
2018 11 30    04 13 41.0 +27 59 38   0.1540  1.1393   173.2     5.8    23.1
...
2018 12 08    04 04 44.9 +26 24 36   0.1053  1.0882   167.5    11.3    22.4
...
2018 12 14    03 53 08.3 +23 37 35   0.07148 1.0515   159.2    19.4    21.8
2018 12 15    03 50 24.9 +22 52 49   0.06602 1.0456   157.5    21.1    21.6
2018 12 16    03 47 19.5 +21 59 57   0.06061 1.0397   155.7    22.9    21.5
...
2018 12 22    03 11 31.0 +09 59 07   0.02963 1.0058   137.8    41.0    20.4
...
2018 12 30    19 20 52.9 -55 03 07   0.02192 0.9650    33.0   146.3    25.8
...
2019 01 14    16 53 47.3 -37 18 33   0.1014  0.9072    39.2   136.7    27.7

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-X122