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    • MPEC 2015-H115: 2015 HW11

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    M.P.E.C. 2015-H115                               Issued 2015 Apr. 24, 16:42 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 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

                                   2015 HW11

Observations:
     K15H11W* C2015 04 23.24935 10 18 27.816-19 04 02.22         19.0 rLEH115F51
     K15H11W  C2015 04 23.27246 10 19 00.200-19 05 11.99         18.9 rLEH115F51
     K15H11W  C2015 04 23.28369 10 19 15.882-19 05 45.25         19.0 rLEH115F51
     K15H11W bC2015 04 23.87895 10 33 45.58 -19 33 39.9                qEH115J95
     K15H11W bC2015 04 23.88386 10 33 52.61 -19 33 51.2                qEH115J95
     K15H11W KC2015 04 23.88897 10 33 59.73 -19 34 04.2          18.4 RqEH115J95
     K15H11W KC2015 04 24.10492710 39 14.16 -19 42 26.4          19.0 VuEH115H21
     K15H11W KC2015 04 24.10808210 39 18.56 -19 42 33.6          18.9 VuEH115H21
     K15H11W KC2015 04 24.11131010 39 23.02 -19 42 40.9          19.0 VuEH115H21
     K15H11W HC2015 04 24.13460 10 39 59.32 -19 43 21.4                oEH115291
     K15H11W HC2015 04 24.13476 10 39 59.55 -19 43 21.7                oEH115291
     K15H11W HC2015 04 24.13492 10 39 59.74 -19 43 22.2                oEH115291
     K15H11W KC2015 04 24.21630 10 41 46.17 -19 43 15.6          19.0 VqEH115X13
     K15H11W KC2015 04 24.21727 10 41 47.58 -19 43 18.0          18.7 VqEH115X13
     K15H11W KC2015 04 24.21805 10 41 48.69 -19 43 19.5          19.0 VqEH115X13
     K15H11W KC2015 04 24.56606 10 50 09.69 -19 55 30.2          18.8 VqEH115E23
     K15H11W KC2015 04 24.57347 10 50 19.94 -19 55 42.6          18.9 VqEH115E23

Observer details:
291 LPL/Spacewatch II.  Observer R. A. Mastaler.  1.8-m f/2.7 reflector + CCD.
E23 Arcadia.  Observer A. Hidas.
F51 Pan-STARRS 1, Haleakala.  Observers R. Anderson, B. Gibson, T. Goggia,
    N. Primak, A. Schultz, M. Willman.  Measurers K. Chambers, S. Chastel,
    L. Denneau, H. Flewelling, M. Huber, E. Magnier, E. Schunova, R. Wainscoat,
    C. Waters, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Buzzi.  0.61-m f/4.5 astrograph + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
    + CCD.
X13 Observatorio Remoto Bosque Alegre.  Observers R. Melia, C. Colazo.  0.76-m
    f/3.9 reflector + CCD.

Orbital elements:
2015 HW11                                                Earth MOID = 0.0318 AU
Epoch 2015 June 27.0 TT = JDT 2457200.5                 MPC
M  37.83793              (2000.0)            P               Q
n   0.39300285     Peri.  299.54828     -0.99070659     -0.12711487
a   1.8458890      Node   233.19053     +0.13600636     -0.92148630
e   0.4763363      Incl.    3.46555     +0.00164989     -0.36702154
P   2.51           H   23.5           G   0.15           U   6
Residuals in seconds of arc
150423 F51  0.2-  0.1+    150424 H21  0.2+  0.2+    150424 X13  0.0   0.1+
150423 F51  0.2+  0.1+    150424 H21  0.4+  0.2+    150424 X13  0.5+  0.4-
150423 F51  0.3-  0.3+    150424 H21  0.0   0.3+    150424 X13  0.6+  0.4-
150423 J95  0.9-  0.4-    150424 291  0.6+  0.0     150424 E23  0.7-  0.0
150423 J95  0.6+  0.4+    150424 291  0.7+  0.1+    150424 E23  0.6-  0.4+
150423 J95  0.5-  0.2-    150424 291  0.2+  0.0

Ephemeris:
2015 HW11                a,e,i = 1.85, 0.48, 3                   q = 0.9666
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2015 03 25    05 10 54.1 +03 53 32   0.1514  0.9668    74.2    97.2    22.8
...
2015 04 09    06 22 59.3 -02 38 45   0.08590 0.9886    79.0    96.1    21.6
...
2015 04 17    08 00 23.5 -11 10 08   0.05868 1.0128    97.3    79.4    20.1
...
2015 04 23    10 12 18.2 -18 49 22   0.05218 1.0360   124.9    52.8    19.1
2015 04 24    10 36 41.3 -19 35 56   0.05291 1.0402   129.8    47.9    19.0
2015 04 25    11 00 28.3 -20 09 04   0.05417 1.0446   134.6    43.3    18.9
...
2015 05 01    12 53 20.2 -19 58 46   0.07091 1.0726   156.2    22.3    19.0
...
2015 05 09    14 08 47.4 -17 19 33   0.1077  1.1147   167.4    11.4    19.6
...
2015 05 24    15 01 44.9 -14 36 48   0.1976  1.2043   164.7    12.8    21.1

A. U. Tomatic                (C) Copyright 2015 MPC           M.P.E.C. 2015-H115

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