[Iaude] MPEC X40: 2018 XB [a=1.34,e=0.30,i=4.1,H=28.4]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Tue Dec 4 17:41:34 EST 2018


M.P.E.C. 2018-X40                                Issued 2018 Dec. 4, 22:38 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 XB
 
Observations:
     K18X00B* C2018 12 01.41490 03 47 02.78 +24 16 43.2          19.0 oVEX040T08
     K18X00B  C2018 12 01.42852 03 47 14.74 +24 25 58.8          19.0 oVEX040T08
     K18X00B  C2018 12 01.44445 03 47 29.06 +24 36 52.0          18.7 oVEX040T08
     K18X00B  C2018 12 01.44491 03 47 29.49 +24 37 09.2          19.0 oVEX040T08
     K18X00B  C2018 12 03.28020906 08 06.93 +61 32 02.6          18.00RUEX040I41
     K18X00B  C2018 12 03.28055506 08 11.34 +61 32 34.6          18.00RUEX040I41
     K18X00B  C2018 12 03.36289206 27 33.66 +63 33 53.8          18.14RUEX040I41
     K18X00B  C2018 12 03.36324006 27 39.20 +63 34 23.1          18.14RUEX040I41
     K18X00B  C2018 12 03.36380506 27 48.00 +63 35 11.3          18.01RUEX040I41
     K18X00B KC2018 12 04.15266111 18 00.53 +65 37 34.8          19.4 GVEX040J95
     K18X00B KC2018 12 04.15528811 18 43.55 +65 35 01.5          19.2 GVEX040J95
     K18X00B KC2018 12 04.15845811 19 35.22 +65 31 55.6          19.3 GVEX040J95
     K18X00B KC2018 12 04.16095711 20 15.54 +65 29 28.6          19.0 GVEX040J95
     K18X00B KC2018 12 04.16405011 21 05.48 +65 26 25.0          19.2 GVEX040J95
     K18X00B KC2018 12 04.16659311 21 46.02 +65 23 54.3          19.1 GVEX040J95
 
Observer details:
I41 Palomar Mountain--ZTF.  Observer A. U. Tomatic.  Measurers H.-J. Tan,
    H.-W. Lin, F. J. Masci, Q.-Z. Ye.  1.2-m f/2.4 Schmidt.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3
    Schmidt-Cassegrain + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, H. Flewelling, A. Heinze,
    H. Weiland, J. Tonry.  Measurers L. Denneau, H. Flewelling, A. Heinze,
    J. Tonry, A. Fitzsimmons, D. Young, N. Erasmus.  0.5-m f/2.0 Schmidt +
    CCD.
 
Orbital elements:
2018 XB                                                  Earth MOID = 0.0050 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
M  71.43077              (2000.0)            P               Q
n   0.63717976     Peri.   41.65132     -0.33564517     -0.93969267
a   1.3375029      Node    68.05474     +0.84444384     -0.33107562
e   0.2975953      Incl.    4.06346     +0.41744092     -0.08582900
P   1.55           H   28.4           G   0.15           U   6
Residuals in seconds of arc
181201 T08  0.5+  0.6+    181203 I41  1.1-  0.8-    181204 J95  0.1-  0.2+
181201 T08  0.1-  0.1+    181203 I41 (2.6-  1.5-)   181204 J95  0.4+  0.1+
181201 T08  0.3-  0.5+    181203 I41 (0.8-  1.3-)   181204 J95  0.4-  0.3+
181201 T08  0.1-  1.2-    181203 I41  0.9+  0.3-    181204 J95  0.6+  0.1-
181203 I41  0.0   0.7-    181204 J95  0.3-  0.4+    181204 J95  0.5-  0.6+

Ephemeris:
2018 XB                  a,e,i = 1.34, 0.30, 4                   q = 0.9395
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 11 04    03 02 21.1 -02 56 35   0.1118  1.0980   160.7    17.4    24.8
...
2018 11 19    03 04 35.5 -01 57 46   0.05288 1.0374   157.3    21.5    23.1
...
2018 11 27    03 13 39.7 +04 05 20   0.02412 1.0092   158.3    21.2    21.4
...
2018 12 03    05 15 26.4 +54 05 43   0.0057130.9906   147.0    32.8    18.5
2018 12 04    10 26 35.7 +67 47 47   0.0054940.9877   111.7    68.0    19.5
2018 12 05    13 21 08.2 +49 20 02   0.0072770.9849    84.6    94.9    21.1
...
2018 12 11    14 40 08.4 +17 15 03   0.02671 0.9695    54.5   124.2    25.6
...
2018 12 19    14 51 12.1 +11 11 16   0.05471 0.9535    55.0   122.4    27.0
...
2019 01 03    15 04 22.1 +06 48 03   0.1073  0.9397    63.1   111.0    27.7

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-X40



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