[Iaude] MPEC E25: 2018 DJ4 [a=2.21,e=0.50,i=3.4,H=21.6]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Wed Mar 7 10:47:17 EST 2018


M.P.E.C. 2018-E25                                Issued 2018 Mar. 7, 15:43 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 DJ4
 
Observations:
     K18D04J* C2018 02 26.40165 12 09 40.50 -01 54 06.3          19.8 GUEE025G96
     K18D04J  C2018 02 26.40694 12 09 40.87 -01 54 12.5          20.0 GUEE025G96
     K18D04J  C2018 02 26.41225 12 09 41.22 -01 54 19.3          20.9 GUEE025G96
     K18D04J  C2018 02 26.41756 12 09 41.67 -01 54 27.8          20.5 GUEE025G96
     K18D04J  C2018 02 26.46456 12 09 44.97 -01 55 27.8          20.3 GUEE025I52
     K18D04J  C2018 02 26.47193 12 09 45.51 -01 55 38.1          19.7 GUEE025I52
     K18D04J  C2018 02 26.47744 12 09 45.93 -01 55 44.7          21.0 GUEE025I52
     K18D04J  C2018 02 26.47855 12 09 45.99 -01 55 46.5          21.1 GUEE025I52
     K18D04J KC2018 02 27.25770 12 10 51.01 -02 13 00.8          20.7 RoEE025291
     K18D04J KC2018 02 27.26370 12 10 51.47 -02 13 09.0          20.5 RoEE025291
     K18D04J KC2018 02 27.26974 12 10 51.91 -02 13 17.0          20.8 RoEE025291
     K18D04J |C2018 03 01.23696 12 13 33.20 -02 58 15.0          20.0 GUEE025807
     K18D04J |C2018 03 01.24158 12 13 33.53 -02 58 21.7          19.8 GUEE025807
     K18D04J |C2018 03 01.24599 12 13 33.84 -02 58 28.1          19.8 GUEE025807
     K18D04J |C2018 03 05.23721 12 19 18.65 -04 40 00.4          20.2 GUEE025807
     K18D04J |C2018 03 05.24036 12 19 18.89 -04 40 05.5          20.3 GUEE025807
     K18D04J |C2018 03 05.24395 12 19 19.17 -04 40 11.3          19.9 GUEE025807
     K18D04J ^C2018 03 06.34389 12 20 58.90 -05 11 10.3          19.8 RoEE025695
     K18D04J ^C2018 03 06.34683 12 20 59.14 -05 11 15.3          19.6 RoEE025695
     K18D04J ^C2018 03 06.34976 12 20 59.38 -05 11 20.2          19.3 RoEE025695
     K18D04J  C2018 03 07.30838 12 22 28.52 -05 38 48.3          19.6 GUEE025I52
     K18D04J  C2018 03 07.31230 12 22 28.82 -05 38 55.2          19.6 GUEE025I52
     K18D04J  C2018 03 07.31622 12 22 29.15 -05 39 01.8          19.4 GUEE025I52
     K18D04J  C2018 03 07.32014 12 22 29.48 -05 39 08.8          19.2 GUEE025I52
     K18D04J  C2018 03 07.37182812 22 33.56 -05 40 39.8          20.3 GUEE025H01
     K18D04J  C2018 03 07.37811112 22 34.08 -05 40 50.9          19.7 GUEE025H01
     K18D04J  C2018 03 07.38582812 22 34.71 -05 41 04.3          19.8 GUEE025H01
     K18D04J  C2018 03 07.39284712 22 35.28 -05 41 16.7          20.3 GUEE025H01
 
Observer details:
291 LPL/Spacewatch II.  Observer M. J. Brucker.  1.8-m f/2.7 reflector + CCD.
695 Kitt Peak.  Observer R. A. Mastaler.  2.3-m f/9 reflector + CCD.
807 Cerro Tololo.  Observers T. Linder, R. Holmes.  1.00-m f/10.0 astrograph
    + CCD.
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers E. J. Christensen,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. G. Matheny, 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 reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers B. M. Africano,
    D. C. Fuls, R. A. Kowalski.  Measurers B. M. Africano, E. J. Christensen,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly, R. G. Matheny.
    1.0-m reflector + CCD.
 
Orbital elements:
2018 DJ4                                                 Earth MOID = 0.1076 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 349.87896              (2000.0)            P               Q
n   0.30029936     Peri.  238.09184     -0.78278662     +0.62196767
a   2.2085121      Node   340.34503     -0.54894118     -0.70532481
e   0.5018082      Incl.    3.41450     -0.29310183     -0.34010752
P   3.28           H   21.6           G   0.15           U   7
Residuals in seconds of arc
180226 G96  0.2-  0.5-    180227 291  0.1+  0.2+    180307 I52  0.2+  0.2-
180226 G96  0.2-  0.3+    180301 807  0.2+  0.0     180307 I52  0.1-  0.2-
180226 G96  0.6-  0.4+    180301 807  0.1+  0.1-    180307 I52  0.0   0.0
180226 G96  0.5+  1.1-    180301 807  0.1-  0.2-    180307 I52  0.1+  0.1-
180226 I52  0.2-  0.4+    180305 807  0.0   0.1-    180307 H01  0.1-  0.1+
180226 I52  0.0   0.3-    180305 807  0.1-  0.1-    180307 H01  0.0   0.0
180226 I52  0.3+  0.3+    180305 807  0.1-  0.0     180307 H01  0.0   0.1+
180226 I52  0.0   0.0     180306 695  0.0   0.2+    180307 H01  0.1-  0.0
180227 291  0.1-  0.1+    180306 695  0.0   0.2+
180227 291  0.1+  0.0     180306 695  0.1+  0.2+

Ephemeris:
2018 DJ4                 a,e,i = 2.21, 0.50, 3                   q = 1.1003
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 02 05    11 42 27.4 +04 03 35   0.4973  1.4094   141.5    25.8    22.0
...
2018 02 20    12 01 21.6 +00 13 31   0.3637  1.3183   150.8    21.4    21.0
...
2018 02 28    12 11 50.4 -02 29 33   0.3043  1.2734   155.4    18.9    20.5
...
2018 03 06    12 20 27.1 -05 01 11   0.2649  1.2420   158.3    17.2    20.1
2018 03 07    12 21 59.0 -05 29 30   0.2588  1.2370   158.7    16.9    20.0
2018 03 08    12 23 32.9 -05 58 48   0.2528  1.2320   159.1    16.7    20.0
...
2018 03 14    12 33 48.9 -09 17 17   0.2195  1.2037   161.0    15.6    19.6
...
2018 03 22    12 50 59.2 -14 54 32   0.1821  1.1703   161.4    15.7    19.1
...
2018 04 06    13 44 25.9 -29 45 41   0.1351  1.1237   154.1    22.9    18.6

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-E25



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