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  • MPEC 2017-G45 : 2017 GP4

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    M.P.E.C. 2017-G45                                Issued 2017 Apr. 4, 18:13 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
    
                                       2017 GP4
    
    Observations:
         K17G04P* C2017 04 01.46490 12 33 30.060-16 02 11.75         21.6 wLEG045F51
         K17G04P  C2017 04 01.47520 12 33 30.191-16 03 13.72         21.8 wLEG045F51
         K17G04P  C2017 04 01.48548 12 33 30.346-16 04 16.40         21.6 wLEG045F51
         K17G04P |C2017 04 02.17180 12 34 12.78 -17 17 12.3          21.5 VuEG045807
         K17G04P |C2017 04 02.17723 12 34 12.92 -17 17 49.1          21.3 VuEG045807
         K17G04P |C2017 04 02.18281 12 34 13.04 -17 18 28.1          21.5 VuEG045807
         K17G04P |C2017 04 03.15004 12 35 21.10 -19 19 47.3          21.4 VuEG045807
         K17G04P |C2017 04 03.15476 12 35 21.26 -19 20 26.3          21.4 VuEG045807
         K17G04P |C2017 04 03.15962 12 35 21.40 -19 21 06.5          21.4 VuEG045807
         K17G04P  C2017 04 03.32352 12 35 31.88 -19 45 49.6                qEG045I52
         K17G04P  C2017 04 03.32632 12 35 31.99 -19 46 13.2                qEG045I52
         K17G04P  C2017 04 03.32778 12 35 32.04 -19 46 26.0                qEG045I52
         K17G04P |C2017 04 04.15303 12 36 48.11 -21 51 14.4          20.9 VuEG045807
         K17G04P |C2017 04 04.15918 12 36 48.41 -21 52 16.2          21.2 VuEG045807
         K17G04P |C2017 04 04.16514 12 36 48.72 -21 53 15.9          21.2 VuEG045807
         K17G04P  C2017 04 04.28584 12 37 00.30 -22 15 42.8          21.6 VqEG045I52
         K17G04P  C2017 04 04.28749 12 37 00.27 -22 15 58.3          20.6 VqEG045I52
         K17G04P  C2017 04 04.28970 12 37 00.39 -22 16 21.7                qEG045I52
    
    Observer details:
    807 Cerro Tololo.  Observers T. Linder, R. Holmes.  0.61-m f/6.5 astrograph
        + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers B. Gibson, T. Goggia, S. Kahale,
        T. Lowe, A. Schultz, M. Willman.  Measurers K. Chambers, S. Chastel,
        L. Denneau, H. Flewelling, M. Huber, E. Lilly, E. Magnier, R. Wainscoat,
        C. Waters, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer E. J. Christensen.
        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.
    
    Orbital elements:
    2017 GP4                                                 Earth MOID = 0.0256 AU
    Epoch 2017 Feb. 16.0 TT = JDT 2457800.5                 MPC
    M 325.25910              (2000.0)            P               Q
    n   0.36682737     Peri.  264.73224     -0.21345656     +0.97693346
    a   1.9326872      Node   352.93391     -0.87551801     -0.19406456
    e   0.5562928      Incl.    2.84639     -0.43347954     -0.08910649
    P   2.69           H   25.9           G   0.15           U   7
    Residuals in seconds of arc
    170401 F51  0.1+  0.3-    170403 807  0.3+  0.2+    170404 807  0.3+  0.1-
    170401 F51  0.1-  0.3+    170403 807  0.3+  0.2+    170404 807  0.3+  0.1-
    170401 F51  0.0   0.1+    170403 807  0.0   0.2+    170404 807  0.5+  0.0
    170402 807  0.2-  0.6-    170403 I52  0.4-  0.1+    170404 I52  0.8+  0.8-
    170402 807  0.1+  0.1+    170403 I52  0.3-  0.2+    170404 I52  0.8-  0.7+
    170402 807  0.1+  0.4-    170403 I52  0.3-  0.3-    170404 I52  0.8-  0.1+
    
    Ephemeris:
    2017 GP4                 a,e,i = 1.93, 0.56, 3                   q = 0.8575
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 03 05    12 23 49.7 -01 54 56   0.3336  1.3073   158.1    16.4    25.0
    ...
    2017 03 20    12 28 19.3 -05 42 31   0.1908  1.1843   170.3     8.2    23.2
    ...
    2017 03 28    12 30 46.9 -10 30 19   0.1237  1.1208   172.3     6.8    22.1
    ...
    2017 04 03    12 35 08.0 -18 59 48   0.07741 1.0750   165.8    13.2    21.3
    2017 04 04    12 36 31.6 -21 26 21   0.07014 1.0676   163.7    15.2    21.1
    2017 04 05    12 38 19.4 -24 25 25   0.06307 1.0602   161.1    17.8    21.0
    ...
    2017 04 11    13 43 45.2 -68 35 39   0.03079 1.0176   119.5    59.0    20.5
    ...
    2017 04 19    00 05 34.1 -31 32 59   0.06052 0.9658    49.1   128.2    25.3
    ...
    2017 05 04    00 23 07.2 -11 02 25   0.1742  0.8914    44.1   128.1    27.4
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-G45
    

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