[Iaude] MPEC X130: 2018 XP4 [a=2.34,e=0.74,i=1.7,H=24.3]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Sat Dec 15 13:01:17 EST 2018


M.P.E.C. 2018-X130                               Issued 2018 Dec. 15, 17:54 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 XP4
 
Observations:
     K18X04P  C2018 12 13.48773 04 09 11.086+09 09 47.67         21.6 wUEX130F51
     K18X04P* C2018 12 13.49030 04 09 11.393+09 09 57.52         21.3 wUEX130F51
     K18X04P  C2018 12 13.49935 04 09 12.525+09 10 32.94         21.5 wUEX130F51
     K18X04P  C2018 12 13.50195 04 09 12.847+09 10 43.11         21.4 wUEX130F51
     K18X04P  C2018 12 13.51098 04 09 13.954+09 11 18.30         21.2 wUEX130F51
     K18X04P  C2018 12 13.51354 04 09 14.287+09 11 28.56         21.6 wUEX130F51
     K18X04P  C2018 12 13.52259 04 09 15.415+09 12 03.25         21.4 wUEX130F51
     K18X04P  C2018 12 13.52517 04 09 15.729+09 12 13.56         21.5 wUEX130F51
     K18X04P  C2018 12 14.22597 04 10 52.20 +09 55 23.2          21.6 GVEX130I52
     K18X04P  C2018 12 14.22847 04 10 52.48 +09 55 31.8          21.4 GVEX130I52
     K18X04P  C2018 12 14.23449 04 10 53.12 +09 55 52.7          21.6 GVEX130I52
     K18X04P  C2018 12 14.23698 04 10 53.36 +09 56 02.2          21.1 GVEX130I52
     K18X04P ^C2018 12 14.37367304 11 10.238+10 04 06.71         21.40GVEX130568
     K18X04P ^C2018 12 14.37462304 11 10.339+10 04 10.07         21.49GVEX130568
     K18X04P ^C2018 12 14.37557604 11 10.435+10 04 13.17         21.51GVEX130568
     K18X04P KC2018 12 15.21302 04 12 49.51 +10 48 58.7                oEX130291
     K18X04P KC2018 12 15.21975 04 12 50.15 +10 49 19.2                oEX130291
 
Observer details:
291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
568 Mauna Kea.  Observers R. Wainscoat, C. Wipper, A. Petric.  Measurers
    R. Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + 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.
I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.
    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.  1.0-m reflector + CCD.
 
Orbital elements:
2018 XP4                                                 Earth MOID = 0.0282 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  52.15915              (2000.0)            P               Q
n   0.27476471     Peri.  200.78549     +0.95660118     +0.29080959
a   2.3433046      Node   142.29233     -0.26289193     +0.88872063
e   0.7445016      Incl.    1.73764     -0.12570608     +0.35440855
P   3.59           H   24.3           G   0.15           U   8
Residuals in seconds of arc
181213 F51  0.1-  0.0     181213 F51  0.1+  0.1-    181214 568  0.1+  0.0
181213 F51  0.2-  0.2-    181213 F51  0.1-  0.2+    181214 568  0.1+  0.2+
181213 F51  0.1+  0.1-    181214 I52  0.0   0.1-    181214 568  0.1+  0.0
181213 F51  0.1+  0.1-    181214 I52  0.2+  0.2-    181215 291  0.1-  0.0
181213 F51  0.1-  0.0     181214 I52  0.1+  0.5-    181215 291  0.0   0.1+
181213 F51  0.1+  0.3+    181214 I52  0.3-  0.3+

Ephemeris:
2018 XP4                 a,e,i = 2.34, 0.74, 2                   q = 0.5987
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 11 15    16 50 43.9 -28 13 10   0.2354  0.7782    23.1   150.1    29.1
...
2018 11 30    19 38 13.9 -59 05 50   0.04680 0.9575    51.0   126.8    23.0
...
2018 12 08    03 46 57.2 -01 43 35   0.08259 1.0576   150.2    27.6    20.2
...
2018 12 14    04 10 22.6 +09 42 15   0.1583  1.1326   157.9    19.1    21.5
2018 12 15    04 12 24.6 +10 38 20   0.1715  1.1450   158.0    18.8    21.7
2018 12 16    04 14 12.4 +11 26 48   0.1848  1.1575   157.9    18.6    21.9
...
2018 12 22    04 22 03.2 +14 40 36   0.2670  1.2316   155.5    19.4    22.9
...
2018 12 30    04 29 17.7 +16 57 45   0.3828  1.3287   150.0    21.7    23.9
...
2019 01 14    04 41 47.0 +19 13 21   0.6208  1.5044   138.2    25.8    25.3

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-X130



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