[Iaude] MPEC X78: 2018 XA2 [a=1.56,e=0.34,i=8.3,H=26.8]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Wed Dec 12 06:51:16 EST 2018


M.P.E.C. 2018-X78                                Issued 2018 Dec. 12, 11:47 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 XA2
 
Observations:
     K18X02A* C2018 12 09.19889 03 41 37.24 +37 21 22.1          20.6 GVEX078G96
     K18X02A  C2018 12 09.20410 03 41 42.23 +37 20 31.2          20.2 GVEX078G96
     K18X02A  C2018 12 09.20931 03 41 47.42 +37 19 38.4          21.1 GVEX078G96
     K18X02A  C2018 12 09.21452 03 41 52.38 +37 18 46.3          21.1 GVEX078G96
     K18X02A  C2018 12 09.25256903 42 28.35 +37 12 17.0          20.7 GVEX078H01
     K18X02A  C2018 12 09.25915403 42 34.73 +37 11 09.6          20.6 GVEX078H01
     K18X02A  C2018 12 09.26843203 42 43.71 +37 09 34.6          20.7 GVEX078H01
     K18X02A  C2018 12 09.27305803 42 48.20 +37 08 46.9          21.0 GVEX078H01
     K18X02A  C2018 12 09.29406 03 43 09.28 +37 05 16.8          21.4 GVEX078I52
     K18X02A  C2018 12 09.29600 03 43 11.13 +37 04 56.6          20.8 GVEX078I52
     K18X02A  C2018 12 09.29794 03 43 13.02 +37 04 36.1                VEX078I52
     K18X02A  C2018 12 09.29988 03 43 14.97 +37 04 16.1                VEX078I52
     K18X02A IC2018 12 09.89287903 53 30.45 +35 20 57.9          20.9 GVEX078L01
     K18X02A IC2018 12 09.89645803 53 33.78 +35 20 20.0          21.0 GVEX078L01
     K18X02A KC2018 12 09.90265803 53 39.62 +35 19 14.8          21.0 GVEX078L01
     K18X02A KC2018 12 10.12346903 57 25.57 +34 40 15.0          21.2 VuEX078H21
     K18X02A  C2018 12 10.13116 03 57 37.44 +34 38 57.3          20.6 GVEX078I52
     K18X02A KC2018 12 10.13217803 57 33.62 +34 38 43.2          21.0 VuEX078H21
     K18X02A  C2018 12 10.13262 03 57 38.83 +34 38 42.6          21.0 GVEX078I52
     K18X02A  C2018 12 10.13464 03 57 40.75 +34 38 21.0          21.1 GVEX078I52
     K18X02A KC2018 12 10.14138403 57 42.12 +34 37 06.2          21.4 VuEX078H21
     K18X02A  C2018 12 12.14365 04 28 39.54 +28 26 34.2          21.1 GVEX078I52
     K18X02A  C2018 12 12.14511 04 28 40.70 +28 26 17.4          20.4 GVEX078I52
     K18X02A  C2018 12 12.14656 04 28 41.88 +28 26 02.2          21.0 GVEX078I52
     K18X02A  C2018 12 12.14801 04 28 43.04 +28 25 46.9          20.0 GVEX078I52
 
Observer details:
G96 Mt. Lemmon Survey.  Observer D. C. Fuls.  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.  1.5-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 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.
I52 Steward Observatory, Mt. Lemmon Station.  Observers H. Groeller,
    G. J. Leonard.  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.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
 
Orbital elements:
2018 XA2                                                 Earth MOID = 0.0448 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  73.67218              (2000.0)            P               Q
n   0.50412370     Peri.  166.69192     +0.37156407     -0.91741384
a   1.5635483      Node   261.34934     +0.83806006     +0.39745701
e   0.3444297      Incl.    8.28454     +0.39949402     +0.01948759
P   1.96           H   26.8           G   0.15           U   7
Residuals in seconds of arc
181209 G96  0.3+  0.0     181209 I52  0.3-  0.1+    181210 I52  0.2-  0.5+
181209 G96  0.6-  0.9+    181209 I52  0.2-  0.3-    181210 I52  0.2+  0.2-
181209 G96  1.0+  0.0     181209 I52  0.7+  0.2-    181210 H21  0.3-  0.0
181209 G96  0.1-  0.1-    181209 L01  0.6+  0.3-    181212 I52  0.0   0.1+
181209 H01  0.3-  0.0     181209 L01  0.1+  0.4-    181212 I52  0.1-  0.7-
181209 H01  0.2-  0.1-    181209 L01  0.2+  0.1-    181212 I52  0.1+  0.0
181209 H01  0.2-  0.1+    181210 H21  0.1-  0.1+    181212 I52  0.1+  0.7+
181209 H01  0.1-  0.0     181210 I52  0.5-  0.1+
181209 I52  0.0   0.2+    181210 H21  0.3-  0.1-

Ephemeris:
2018 XA2                 a,e,i = 1.56, 0.34, 8                   q = 1.0250
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 11 12    22 28 53.7 +48 06 44   0.1096  1.0435   116.5    58.1    24.2
...
2018 11 27    00 07 22.2 +51 37 21   0.06664 1.0260   124.4    52.5    22.9
...
2018 12 05    02 21 38.2 +46 45 06   0.04975 1.0254   142.3    36.0    21.8
...
2018 12 11    04 11 26.0 +32 01 21   0.04590 1.0290   164.1    15.2    21.0
2018 12 12    04 26 26.5 +28 54 23   0.04630 1.0299   167.6    11.8    20.9
2018 12 13    04 40 17.2 +25 45 52   0.04700 1.0309   170.7     8.9    20.8
...
2018 12 19    05 41 42.0 +09 05 47   0.05679 1.0390   165.7    13.6    21.4
...
2018 12 27    06 25 26.7 -03 52 37   0.07953 1.0548   152.8    25.3    22.6
...
2019 01 11    07 00 16.4 -11 48 45   0.1354  1.0978   145.6    30.4    24.0

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-X78



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