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  • MPEC 2017-E91 : 2017 EH4

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    M.P.E.C. 2017-E91                                Issued 2017 Mar. 13, 22:57 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 EH4
    
    Observations:
         K17E04H* C2017 03 08.26797 11 23 10.47 +34 24 35.3          19.2 VqEE091G96
         K17E04H  C2017 03 08.27222 11 23 11.34 +34 23 46.2          19.2 VqEE091G96
         K17E04H  C2017 03 08.27649 11 23 12.24 +34 22 58.3          18.8 VqEE091G96
         K17E04H  C2017 03 08.28075 11 23 13.17 +34 22 09.6          19.3 VqEE091G96
         K17E04H KC2017 03 08.31758 11 23 17.02 +34 14 47.0          19.5 VqEE091W25
         K17E04H KC2017 03 08.32309 11 23 18.06 +34 13 43.5          19.3 VqEE091W25
         K17E04H  C2017 03 08.34172 11 23 25.36 +34 10 30.3          19.1 VqEE091G96
         K17E04H  C2017 03 08.34343 11 23 25.67 +34 10 10.3          19.7 VqEE091G96
         K17E04H  C2017 03 08.34519 11 23 26.05 +34 09 50.1          19.4 VqEE091G96
         K17E04H  C2017 03 08.34699 11 23 26.40 +34 09 28.8          19.1 VqEE091G96
         K17E04H  C2017 03 08.35822611 23 28.13 +34 07 15.0          19.0 GUEE091H01
         K17E04H  C2017 03 08.36688911 23 29.90 +34 05 34.4          19.1 GUEE091H01
         K17E04H  C2017 03 08.37381811 23 31.30 +34 04 14.1          19.1 GUEE091H01
         K17E04H  C2017 03 08.38035311 23 32.64 +34 02 58.2          18.9 GUEE091H01
         K17E04H  C2017 03 08.41212 11 23 39.58 +33 56 53.3          19.4 VqEE091I52
         K17E04H  C2017 03 08.41555 11 23 40.28 +33 56 12.9          19.3 VqEE091I52
         K17E04H  C2017 03 08.41936 11 23 41.06 +33 55 28.5          19.3 VqEE091I52
         K17E04H  C2017 03 08.42280 11 23 41.78 +33 54 48.8          19.0 VqEE091I52
         K17E04H  C2017 03 08.43689 11 23 44.73 +33 52 03.2          19.1 VqEE091G96
         K17E04H  C2017 03 08.43879 11 23 45.13 +33 51 41.1          19.6 VqEE091G96
         K17E04H  C2017 03 08.44076 11 23 45.56 +33 51 18.4          19.4 VqEE091G96
         K17E04H  C2017 03 08.44254 11 23 45.95 +33 50 57.2          19.4 VqEE091G96
         K17E04H  C2017 03 08.55213 11 24 23.86 +33 30 07.1          19.5 RoEE091300
         K17E04H  C2017 03 08.55521 11 24 24.45 +33 29 32.7          19.5 RoEE091300
         K17E04H  C2017 03 08.55829 11 24 25.10 +33 28 58.3          19.8 RoEE091300
         K17E04H  C2017 03 08.56444 11 24 26.25 +33 27 48.5          19.9 RoEE091300
         K17E04H  C2017 03 09.18827 11 26 57.74 +31 29 47.7                uEE091G37
         K17E04H  C2017 03 09.18933 11 26 57.94 +31 29 36.1                uEE091G37
         K17E04H  C2017 03 09.19006 11 26 58.10 +31 29 27.8                uEE091G37
         K17E04H  C2017 03 09.19591 11 26 59.27 +31 28 23.5                uEE091G37
         K17E04H  C2017 03 09.19831 11 26 59.76 +31 27 57.0                uEE091G37
         K17E04H  C2017 03 09.19918 11 27 00.03 +31 27 52.7          20.0 VqEE091I52
         K17E04H  C2017 03 09.19960 11 27 00.13 +31 27 48.1          19.3 VqEE091I52
         K17E04H  C2017 03 09.20001 11 27 00.19 +31 27 43.7          19.2 VqEE091I52
         K17E04H  C2017 03 09.20059 11 27 00.28 +31 27 37.6          19.1 VqEE091I52
         K17E04H  C2017 03 09.20068 11 27 00.21 +31 27 30.9                uEE091G37
         K17E04H  C2017 03 09.20211 11 27 00.49 +31 27 15.3                uEE091G37
         K17E04H KC2017 03 09.28732411 27 13.18 +31 11 23.7          19.4 VuEE091H21
         K17E04H KC2017 03 09.29308511 27 14.23 +31 10 18.8          19.4 VuEE091H21
         K17E04H KC2017 03 09.29910111 27 15.35 +31 09 10.8          19.4 VuEE091H21
         K17E04H KC2017 03 09.30171711 27 15.84 +31 08 41.4          19.7 VuEE091H21
         K17E04H KC2017 03 09.41597 11 27 39.25 +30 47 34.9          18.8 RqEE091926
         K17E04H KC2017 03 09.41712 11 27 39.47 +30 47 20.8          18.7 RqEE091926
         K17E04H  C2017 03 10.20881 11 30 41.27 +28 21 58.1          20.0 VqEE091I52
         K17E04H  C2017 03 10.20957 11 30 41.42 +28 21 50.5          19.7 VqEE091I52
         K17E04H  C2017 03 10.21033 11 30 41.58 +28 21 42.2          19.1 VqEE091I52
         K17E04H  C2017 03 10.21109 11 30 41.66 +28 21 33.5          20.1 VqEE091I52
         K17E04H  C2017 03 10.27452 11 30 52.12 +28 10 15.0          19.0 VqEE091G96
         K17E04H  C2017 03 10.27562 11 30 52.30 +28 10 03.8          19.0 VqEE091G96
         K17E04H  C2017 03 10.27672 11 30 52.47 +28 09 51.9          19.1 VqEE091G96
         K17E04H  C2017 03 10.27783 11 30 52.64 +28 09 39.8          19.1 VqEE091G96
         K17E04H KC2017 03 10.88090 11 32 54.97 +26 21 21.6          19.1 RqEE091K61
         K17E04H KC2017 03 10.88222 11 32 55.19 +26 21 07.5          19.3 RqEE091K61
         K17E04H KC2017 03 10.88313 11 32 55.33 +26 20 57.9          19.4 RqEE091K61
         K17E04H KC2017 03 10.90323 11 32 59.18 +26 17 37.8          18.4 RqEE091160
         K17E04H KC2017 03 10.90744 11 32 59.85 +26 16 53.4          18.7 RqEE091160
         K17E04H KC2017 03 10.91161 11 33 00.51 +26 16 10.0          18.5 RqEE091160
         K17E04H KC2017 03 10.94253 11 33 04.97 +26 10 41.3          18.9 VSEE091595
         K17E04H KC2017 03 10.96174 11 33 07.90 +26 07 19.1                SEE091595
         K17E04H KC2017 03 11.12252 11 33 43.12 +25 39 11.7          20.0 VqEE091W25
         K17E04H KC2017 03 11.12954 11 33 44.17 +25 37 59.3          19.8 VqEE091W25
         K17E04H BC2017 03 12.99061 11 39 03.97 +20 26 10.2                UEE091J95
         K17E04H KC2017 03 13.00424 11 39 05.68 +20 23 59.9                UEE091J95
         K17E04H KC2017 03 13.01672 11 39 07.24 +20 22 00.4                UEE091J95
         K17E04H KC2017 03 13.02766 11 39 08.69 +20 20 15.3          19.3 GUEE091J95
         K17E04H KC2017 03 13.80918 11 41 13.34 +18 17 59.4          19.5  tEE091104
         K17E04H KC2017 03 13.81687 11 41 14.32 +18 16 50.1          19.6  tEE091104
    
    Observer details:
    104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
        P. Bacci, L. Tesi, G. Fagioli.  0.60-m f/4 reflector + CCD.
    160 Castelmartini.  Observers M. Jaeger, E. Prosperi, S. Prosperi, W. Vollmann.
        Measurer E. Prosperi.  0.35-m f/10 Schmidt-Cassegrain + CCD.
    300 Bisei Spaceguard Center--BATTeRS.  Observers K. Nishiyama, T. Nimura.
        1.0-m f/3.0 reflector + CCD.
    595 Farra d'Isonzo.  Observers M. Ceschia, E. Pettarin.  Measurer E. Pettarin.
        0.61-m f/4.0 reflector + CCD.
    926 Tenagra II Observatory.  Observers G. Masi, M. Schwartz.  Measurers
        G. Masi, P. Holvorcem.  0.41-m f/3.75 reflector + CCD.
    G37 Lowell Observatory-Discovery Channel Telescope.  Observers A. Thirouin,
        H. Larson.  Measurer A. Thirouin.
    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.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
        astrograph + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer R. A. Kowalski.
        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.
    K61 Rokycany Observatory.  Observer M. Adamovsky.  0.51-m f/6.8 reflector
        + CCD.
    W25 RMS Observatory, Cincinnati.  Observer B. Rowe.  0.35-m Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2017 EH4                                                 Earth MOID = 0.0646 AU
    Epoch 2017 Feb. 16.0 TT = JDT 2457800.5                 MPC
    M   1.78864              (2000.0)            P               Q
    n   0.42128002     Peri.  137.38865     -0.76033178     -0.64952059
    a   1.7623364      Node     2.11987     +0.56012561     -0.65901814
    e   0.4223085      Incl.    6.69469     +0.32886911     -0.37923356
    P   2.34           H   23.9           G   0.15           U   6
    Residuals in seconds of arc
    170308 G96  0.7-  0.3+    170308 300  1.3+  1.2+    170310 I52  0.2-  0.9-
    170308 G96  0.6-  0.5-    170308 300  1.6+  1.4+    170310 G96  0.2+  0.5-
    170308 G96  0.2-  0.3+    170308 300  0.5+  0.8+    170310 G96  0.2+  0.2+
    170308 G96  0.6+  0.2+    170309 G37  0.8-  0.2+    170310 G96  0.1+  0.1+
    170308 W25  1.1+  0.9-    170309 G37  1.0-  0.2+    170310 G96  0.1+  0.1-
    170308 W25  0.3-  0.2-    170309 G37  0.8-  0.0     170310 K61  0.2+  0.7+
    170308 G96  0.3+  0.1+    170309 G37  0.5-  0.1-    170310 K61  0.2+  0.4+
    170308 G96  0.1-  0.1-    170309 G37  0.3-  0.2-    170310 K61  0.1+  0.3+
    170308 G96  0.3+  0.0     170309 I52  0.1-  0.0     170310 160  0.2+  0.2+
    170308 G96  0.1+  0.6-    170309 I52  0.2+  0.0     170310 160  0.3+  0.2-
    170308 H01  0.3-  0.1-    170309 I52  0.1-  0.1+    170310 160  0.3+  0.1+
    170308 H01  0.1-  0.3-    170309 I52  0.4-  0.4+    170310 595  0.2+  0.8-
    170308 H01  0.2-  0.1-    170309 G37  0.4-  0.3-    170310 595  0.4-  1.0-
    170308 H01  0.1-  0.1-    170309 G37  0.4-  0.2-    170311 W25  0.3+  0.2+
    170308 I52  0.1+  0.0     170309 H21  0.4-  0.2+    170311 W25  0.6-  0.1+
    170308 I52  0.0   0.3-    170309 H21  0.5-  0.2+    170312 J95  0.1+  0.1-
    170308 I52  0.1-  0.2-    170309 H21  0.3-  0.0     170313 J95  0.1-  0.1+
    170308 I52  0.1-  0.3+    170309 H21  0.1-  0.1+    170313 J95  0.4-  0.2+
    170308 G96  0.1-  0.5-    170309 926  0.4-  0.5+    170313 J95  0.5+  0.0
    170308 G96  0.1-  0.4-    170309 926  0.3-  0.5-    170313 104  0.2+  0.5-
    170308 G96  0.1+  0.0     170310 I52  0.2-  0.6-    170313 104  0.0   0.2-
    170308 G96  0.2+  0.4-    170310 I52  0.0   0.1-
    170308 300  1.7+  1.0+    170310 I52  0.4+  0.3-
    
    Ephemeris:
    2017 EH4                 a,e,i = 1.76, 0.42, 7                   q = 1.0181
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 02 11    03 52 05.7 +73 17 06   0.1045  1.0181   104.5    69.8    21.5
    ...
    2017 02 26    09 54 55.9 +65 46 26   0.07112 1.0302   122.6    54.1    20.2
    ...
    2017 03 06    11 12 07.8 +41 47 21   0.06722 1.0472   144.0    33.9    19.5
    ...
    2017 03 12    11 36 18.0 +23 09 42   0.07478 1.0642   160.2    18.5    19.4
    2017 03 13    11 39 04.5 +20 25 47   0.07687 1.0674   162.5    16.2    19.3
    2017 03 14    11 41 36.1 +17 50 05   0.07917 1.0707   164.7    14.2    19.3
    ...
    2017 03 20    11 52 53.0 +05 08 58   0.09677 1.0922   175.0     4.6    19.4
    ...
    2017 03 28    12 01 54.1 -05 26 22   0.1281  1.1254   173.3     5.9    20.2
    ...
    2017 04 12    12 13 04.9 -14 40 07   0.2043  1.1985   162.2    14.8    21.7
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-E91
    

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