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    • MPEC 2018-H36 : 2018 HB

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    M.P.E.C. 2018-H36                                Issued 2018 Apr. 18, 17:31 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@CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2018 HB

Observations:
     K18H00B* C2018 04 16.24890 11 41 32.23 -10 48 12.7          20.5 GUEH036G96
     K18H00B  C2018 04 16.25921 11 41 27.55 -10 48 11.6          20.3 GUEH036G96
     K18H00B  C2018 04 16.26437 11 41 25.18 -10 48 10.1          21.2 GUEH036G96
     K18H00B  C2018 04 16.35681 11 40 43.27 -10 47 57.4                UEH036I52
     K18H00B  C2018 04 16.35805 11 40 42.77 -10 47 57.4          20.9 GUEH036I52
     K18H00B  C2018 04 16.35929 11 40 42.18 -10 47 56.1          20.9 GUEH036I52
     K18H00B  C2018 04 16.36053 11 40 41.65 -10 47 55.8          20.9 GUEH036I52
     K18H00B KC2018 04 17.19753611 34 35.77 -10 45 53.9          20.6 VuEH036H21
     K18H00B KC2018 04 17.20138011 34 34.05 -10 45 52.6          20.7 VuEH036H21
     K18H00B KC2018 04 17.20757511 34 31.33 -10 45 51.7          20.7 VuEH036H21
     K18H00B  C2018 04 17.84527 11 29 57.74 -10 44 03.6          21.6 VSEH036033
     K18H00B  C2018 04 17.84786 11 29 56.61 -10 44 02.6          21.5 VSEH036033
     K18H00B  C2018 04 17.85046 11 29 55.47 -10 44 01.9          21.2 VSEH036033
     K18H00B  C2018 04 17.85306 11 29 54.33 -10 44 01.7          21.6 VSEH036033
     K18H00B  C2018 04 17.85566 11 29 53.17 -10 44 01.3          21.7 VSEH036033
     K18H00B KC2018 04 17.92131 11 29 24.95 -10 43 44.8          20.0 RtEH036Z84
     K18H00B KC2018 04 17.93083 11 29 20.79 -10 43 43.1          20.2 RtEH036Z84
     K18H00B KC2018 04 17.94033 11 29 16.64 -10 43 40.8          20.1 RtEH036Z84
     K18H00B KC2018 04 17.94994 11 29 12.49 -10 43 38.8          20.5 RtEH036Z84
     K18H00B  C2018 04 18.15696 11 27 45.69 -10 42 58.3                UEH036I52
     K18H00B  C2018 04 18.15853 11 27 44.97 -10 42 57.4          21.5 GUEH036I52
     K18H00B  C2018 04 18.16011 11 27 44.33 -10 42 57.0                UEH036I52
     K18H00B  C2018 04 18.16136 11 27 43.75 -10 42 56.0          20.8 GUEH036I52

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers C. Hoegner,
    B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  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.
    1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.81-m f/4.0
    astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer J. A. Johnson.
    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.  1.0-m reflector + CCD.
Z84 Calar Alto-Schmidt.  Observer E. Schwab.  Measurers E. Schwab, D. Koschny,
    M. Micheli.  0.8-m f/3 Schmidt + CCD.

Orbital elements:
2018 HB                                                  Earth MOID = 0.1804 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 183.57288              (2000.0)            P               Q
n   1.35182825     Peri.  354.83938     +0.98538541     -0.14251406
a   0.8100684      Node    14.40252     +0.16660826     +0.69233993
e   0.5880605      Incl.   22.03122     +0.03545832     +0.70735787
P   0.73           H   22.3           G   0.15           U   9
Residuals in seconds of arc
180416 G96  0.0   0.1+    180417 H21  0.1-  0.4+    180417 Z84  0.4-  0.2-
180416 G96  0.2+  0.2-    180417 H21  0.3+  0.2+    180417 Z84  0.4-  0.3+
180416 G96  0.1-  0.6+    180417 033  0.3+  0.3-    180417 Z84  0.2+  0.4+
180416 I52  0.6-  0.7-    180417 033  0.3+  0.2+    180418 I52  0.3+  1.0-
180416 I52  0.3+  0.9-    180417 033  0.1+  0.5+    180418 I52  0.2-  0.4-
180416 I52  0.1-  0.2+    180417 033  0.0   0.2+    180418 I52  0.4+  0.2-
180416 I52  0.3+  0.3+    180417 033  0.4-  0.1+    180418 I52  0.1-  0.5+
180417 H21  0.0   0.2-    180417 Z84  0.3-  0.1-

Ephemeris:
2018 HB                  a,e,i = 0.81, 0.59, 22                  q = 0.3337
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 03 19    14 42 36.6 -07 47 22   0.3651  1.2863   136.9    32.0    22.0
...
2018 04 03    13 22 57.5 -10 10 24   0.2804  1.2766   169.9     7.9    20.6
...
2018 04 11    12 21 57.8 -10 49 38   0.2658  1.2617   166.2    10.9    20.6
...
2018 04 17    11 36 02.5 -10 46 01   0.2717  1.2460   149.8    23.9    21.1
2018 04 18    11 28 51.9 -10 43 06   0.2739  1.2430   147.1    26.0    21.1
2018 04 19    11 21 53.0 -10 39 42   0.2765  1.2399   144.5    28.0    21.2
...
2018 04 25    10 44 39.6 -10 12 59   0.2980  1.2189   130.0    39.2    21.7
...
2018 05 03    10 07 51.7 -09 36 10   0.3371  1.1846   113.7    51.2    22.2
...
2018 05 18    09 28 11.8 -09 00 39   0.4194  1.0999    90.7    66.9    23.0

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-H36

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