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    • MPEC 2017-T90 : 2017 TP4

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    M.P.E.C. 2017-T90                                Issued 2017 Oct. 15, 15:48 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 TP4

Observations:
     K17T04P* C2017 10 12.27640 23 19 01.96 +28 06 48.0          21.0 GUET090G96
     K17T04P  C2017 10 12.28365 23 19 01.40 +28 06 41.4          20.7 GUET090G96
     K17T04P  C2017 10 12.29013 23 19 00.92 +28 06 36.2                UET090G96
     K17T04P  C2017 10 12.29644 23 19 00.47 +28 06 31.7                UET090G96
     K17T04P  C2017 10 12.31446 23 18 59.19 +28 06 17.0          22.0 GUET090G96
     K17T04P  C2017 10 12.31813 23 18 58.99 +28 06 13.4          21.0 GUET090G96
     K17T04P  C2017 10 12.32191 23 18 58.67 +28 06 10.6          21.0 GUET090G96
     K17T04P  C2017 10 12.32568 23 18 58.42 +28 06 06.7          21.1 GUET090G96
     K17T04P  C2017 10 12.42069323 18 53.46 +28 04 29.7          21.6 GUET090H01
     K17T04P  C2017 10 12.42477523 18 53.34 +28 04 25.4          21.4 GUET090H01
     K17T04P  C2017 10 12.43492823 18 53.03 +28 04 15.0          21.6 GUET090H01
     K17T04P  C2017 10 12.44346723 18 52.83 +28 04 06.5          21.4 GUET090H01
     K17T04P  C2017 10 13.21395 23 18 51.44 +27 56 36.2          21.0 GUET090G96
     K17T04P  C2017 10 13.21745 23 18 51.12 +27 56 34.6          21.3 GUET090G96
     K17T04P  C2017 10 13.22104 23 18 50.90 +27 56 31.9          20.4 GUET090G96
     K17T04P  C2017 10 13.22462 23 18 50.65 +27 56 29.7                UET090G96
     K17T04P  C2017 10 15.13988 23 18 39.89 +27 33 34.0          21.5 GUET090I52
     K17T04P  C2017 10 15.14418 23 18 39.66 +27 33 31.9                UET090I52
     K17T04P  C2017 10 15.14847 23 18 39.40 +27 33 29.6                UET090I52
     K17T04P  C2017 10 15.15275 23 18 39.11 +27 33 26.2                UET090I52

Observer details:
G96 Mt. Lemmon Survey.  Observer J. A. Johnson.  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 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.  1.0-m reflector + CCD.

Orbital elements:
2017 TP4                                                 Earth MOID = 0.0532 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
M 289.27346              (2000.0)            P               Q
n   0.88020391     Peri.  136.73760     +0.53131156     -0.84675503
a   1.0783188      Node   281.15142     +0.76965627     +0.49563444
e   0.0379129      Incl.    1.56058     +0.35403003     +0.19326775
P   1.12           H   26.3           G   0.15           U   7
Residuals in seconds of arc
171012 G96  0.3+  0.5+    171012 G96  0.0   0.3-    171013 G96  0.3-  0.1+
171012 G96  0.1+  0.4-    171012 H01  0.1-  0.1+    171013 G96  0.1-  0.3+
171012 G96  0.1+  0.5-    171012 H01  0.0   0.1-    171015 I52  0.1+  0.3-
171012 G96  0.2+  0.1+    171012 H01  0.3-  0.2-    171015 I52  0.4+  0.2+
171012 G96  0.1+  0.3+    171012 H01  0.1-  0.0     171015 I52  0.3+  0.4+
171012 G96  0.8+  0.1-    171013 G96  0.2-  0.4-    171015 I52  0.2-  0.4-
171012 G96  0.0   0.3+    171013 G96  1.0-  0.3+

Ephemeris:
2017 TP4                 a,e,i = 1.08, 0.04, 2                   q = 1.0374
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2017 09 15    23 45 30.6 +27 08 38   0.06216 1.0597   149.5    28.8    21.7
...
2017 09 30    23 27 40.0 +29 14 20   0.05742 1.0517   150.2    28.3    21.5
...
2017 10 08    23 20 59.1 +28 45 12   0.05687 1.0479   148.2    30.2    21.5
...
2017 10 14    23 18 42.6 +27 47 45   0.05722 1.0454   146.0    32.3    21.5
2017 10 15    23 18 36.1 +27 35 38   0.05735 1.0450   145.6    32.7    21.6
2017 10 16    23 18 34.7 +27 22 54   0.05749 1.0446   145.1    33.1    21.6
...
2017 10 22    23 20 21.4 +25 56 04   0.05875 1.0425   142.5    35.5    21.7
...
2017 10 30    23 28 00.0 +23 46 54   0.06138 1.0401   139.0    38.8    21.9
...
2017 11 14    23 55 35.5 +19 57 52   0.06894 1.0374   132.7    44.5    22.3

A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-T90

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