[Iaude] MPEC H53: 2017 HW2 [a=1.79,e=0.46,i=5.3,H=26.5]

mpec at si.edu mpec at si.edu
Sun Apr 23 10:31:20 EDT 2017


M.P.E.C. 2017-H53                                Issued 2017 Apr. 23, 14:27 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 http://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2017 HW2
 
Observations:
     K17H02W* C2017 04 22.33287 15 22 12.61 +23 55 41.2          21.4 VqEH053G96
     K17H02W  C2017 04 22.33791 15 22 18.80 +23 55 41.0          20.9 VqEH053G96
     K17H02W  C2017 04 22.34383 15 22 26.20 +23 55 40.3          20.8 VqEH053G96
     K17H02W  C2017 04 22.34810 15 22 31.55 +23 55 39.9          20.6 VqEH053G96
     K17H02W  C2017 04 22.37095315 22 59.10 +23 55 28.8          21.2 GUEH053H01
     K17H02W  C2017 04 22.37703715 23 06.72 +23 55 27.2          20.7 GUEH053H01
     K17H02W  C2017 04 22.38662015 23 18.75 +23 55 24.4          19.8 GUEH053H01
     K17H02W  C2017 04 22.39204415 23 25.58 +23 55 22.5          20.3 GUEH053H01
     K17H02W KC2017 04 22.97937 15 37 37.40 +23 49 05.8                UEH053J95
     K17H02W KC2017 04 22.99130 15 37 54.96 +23 48 57.4                UEH053J95
     K17H02W KC2017 04 23.00354 15 38 12.91 +23 48 48.7          21.0 GUEH053J95
     K17H02W  C2017 04 23.35967 15 47 38.68 +23 43 51.4          20.5 RoEH053926
     K17H02W  C2017 04 23.36437 15 47 46.03 +23 43 45.8          20.5 RoEH053926
     K17H02W  C2017 04 23.36903 15 47 53.31 +23 43 39.5          20.5 RoEH053926
     K17H02W  C2017 04 23.42304 15 49 18.24 +23 42 18.8          21.7 VqEH053I52
     K17H02W  C2017 04 23.42526 15 49 21.64 +23 42 14.7          20.7 VqEH053I52
     K17H02W  C2017 04 23.42637 15 49 23.35 +23 42 13.1          20.8 VqEH053I52
 
Observer details:
926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
    M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer R. G. Matheny.  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.  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.  1.0-m reflector + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
    + CCD.
 
Orbital elements:
2017 HW2                                                 Earth MOID = 0.0090 AU
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5                 MPC
M 320.79045              (2000.0)            P               Q
n   0.40998917     Peri.  201.23274     -0.36902196     +0.92692549
a   1.7945454      Node    47.18257     -0.83880323     -0.30061087
e   0.4587023      Incl.    5.32372     -0.40028981     -0.22459351
P   2.40           H   26.5           G   0.15           U   7
Residuals in seconds of arc
170422 G96  0.3+  0.1-    170422 H01  0.1-  0.1-    170423 926  0.2+  0.3-
170422 G96  0.6-  0.2+    170422 H01  0.0   0.2-    170423 926  0.3+  0.6-
170422 G96  0.0   0.1+    170422 J95  0.1-  0.6+    170423 I52  1.2+  0.8+
170422 G96  0.6+  0.2+    170422 J95  0.4+  0.1-    170423 I52  0.4-  0.2+
170422 H01  0.1-  0.2-    170423 J95  0.3-  0.5-    170423 I52  1.1-  0.4+
170422 H01  0.1-  0.1-    170423 926  0.1-  0.7-

Ephemeris:
2017 HW2                 a,e,i = 1.79, 0.46, 5                   q = 0.9714
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 03 24    13 05 08.5 +17 11 16   0.1993  1.1833   157.4    18.9    24.3
...
2017 04 08    13 28 07.2 +20 27 25   0.1098  1.0993   151.9    25.4    23.1
...
2017 04 16    14 02 12.9 +22 32 04   0.06742 1.0606   146.8    31.2    22.1
...
2017 04 22    15 15 02.1 +23 56 31   0.03906 1.0351   139.4    39.2    21.1
2017 04 23    15 38 01.7 +23 50 54   0.03499 1.0312   136.8    41.8    20.9
2017 04 24    16 06 32.9 +23 24 45   0.03130 1.0275   133.3    45.4    20.8
...
2017 04 30    20 29 44.3 +04 30 44   0.02599 1.0070    88.6    89.9    21.8
...
2017 05 08    23 02 48.9 -11 50 06   0.05764 0.9864    65.2   111.7    24.5
...
2017 05 23    00 03 57.7 -15 42 56   0.1317  0.9711    68.1   104.7    25.9

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-H53




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