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  • MPEC 2017-U164: 2017 UR2

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    M.P.E.C. 2017-U164                               Issued 2017 Oct. 22, 14:35 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 UR2
    
    Observations:
         K17U02R* C2017 10 19.39518 00 12 54.51 +22 34 19.7          19.1 o EU164T08
         K17U02R  C2017 10 19.40368 00 13 04.80 +22 35 36.0          19.1 o EU164T08
         K17U02R  C2017 10 19.40981 00 13 12.30 +22 36 28.7          18.2 o EU164T08
         K17U02R  C2017 10 19.42328 00 13 28.57 +22 38 24.7          18.9 o EU164T08
         K17U02R  C2017 10 19.81579 00 22 14.11 +23 20 39.5                qEU164246
         K17U02R  C2017 10 19.81613 00 22 14.39 +23 20 42.3                qEU164246
         K17U02R  C2017 10 19.81769 00 22 15.70 +23 20 51.8                qEU164246
         K17U02R  C2017 10 19.81807 00 22 16.07 +23 20 54.5          19.7 RqEU164246
         K17U02R  C2017 10 19.81867 00 22 16.49 +23 20 58.8                qEU164246
         K17U02R  C2017 10 19.81920 00 22 16.94 +23 21 01.1                qEU164246
         K17U02R  C2017 10 19.81981 00 22 17.54 +23 21 05.3          19.8 RqEU164246
         K17U02R  C2017 10 19.82324 00 22 20.30 +23 21 28.2                qEU164246
         K17U02R  C2017 10 19.82375 00 22 20.87 +23 21 31.1                qEU164246
         K17U02R  C2017 10 19.82471 00 22 21.63 +23 21 37.4                qEU164246
         K17U02R KC2017 10 19.82473 00 22 24.77 +23 22 20.9          19.2 RUEU164104
         K17U02R  C2017 10 19.82530 00 22 22.11 +23 21 42.4                qEU164246
         K17U02R KC2017 10 19.82885 00 22 28.21 +23 22 47.5          19.3 RUEU164104
         K17U02R KC2017 10 19.83312 00 22 31.71 +23 23 15.1          19.1 RUEU164104
         K17U02R KC2017 10 19.88648900 23 32.772+23 30 51.60         19.0 GUEU164J04
         K17U02R KC2017 10 19.88834800 23 34.162+23 31 03.40         19.2 GUEU164J04
         K17U02R KC2017 10 19.89020800 23 35.546+23 31 15.13         19.0 GUEU164J04
         K17U02R  C2017 10 20.11697 00 26 59.11 +23 49 02.6          19.0 RoEU164926
         K17U02R  C2017 10 20.11933 00 27 00.62 +23 49 15.2          18.8 RoEU164926
         K17U02R  C2017 10 20.12168 00 27 02.09 +23 49 27.9          18.9 RoEU164926
         K17U02R  C2017 10 20.15466 00 27 22.02 +23 52 10.4          19.4 GUEU164I52
         K17U02R  C2017 10 20.15582 00 27 22.70 +23 52 16.4          19.6 GUEU164I52
         K17U02R  C2017 10 20.15925 00 27 24.70 +23 52 33.3          19.2 GUEU164I52
         K17U02R  C2017 10 20.16039 00 27 25.35 +23 52 38.9          19.2 GUEU164I52
         K17U02R KC2017 10 20.29567 00 28 25.93 +24 00 30.1          20.1 VqEU164W25
         K17U02R KC2017 10 20.31793 00 28 38.79 +24 01 38.5          20.1 VqEU164W25
         K17U02R KC2017 10 20.46445 00 30 07.94 +24 10 15.3          19.6 RoEU164291
         K17U02R KC2017 10 20.46533 00 30 08.49 +24 10 17.1          19.6 RoEU164291
         K17U02R KC2017 10 20.46621 00 30 08.98 +24 10 19.4          19.6 RoEU164291
         K17U02R  C2017 10 21.24262 00 37 01.98 +24 46 01.5                UEU164G96
         K17U02R  C2017 10 21.25240 00 37 04.33 +24 46 20.8          20.2 GUEU164G96
         K17U02R  C2017 10 21.25945 00 37 05.97 +24 46 34.2          20.2 GUEU164G96
         K17U02R  C2017 10 21.26632 00 37 07.55 +24 46 47.5          20.3 GUEU164G96
    
    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.
    246 Klet Observatory-KLENOT.  Observers M. Tichy, J. Ticha.  Measurer M. Tichy.
        1.06-m KLENOT Telescope + CCD.
    291 LPL/Spacewatch II.  Observer R. A. Mastaler.  1.8-m f/2.7 reflector + CCD.
    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 D. C. Fuls.  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.
    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.
    J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers
        M. Micheli, D. Koschny, M. Busch, A. Knoefel, E. Schwab.  1.0-m f/4.4
        reflector + CCD.
    T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, A. Heinze, H. Weiland,
        J. Tonry.  Measurers L. Denneau, H. Flewelling, A. Heinze, B. Stalder,
        J. Tonry.  0.5-m f/2.0 Schmidt + CCD.
    W25 RMS Observatory, Cincinnati.  Observer B. Rowe.  0.35-m Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2017 UR2                                                 Earth MOID = 0.0001 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M  16.47178              (2000.0)            P               Q
    n   0.83399398     Peri.  270.95598     +0.42024899     +0.90618865
    a   1.1177914      Node    24.06632     -0.77989861     +0.38720940
    e   0.3228162      Incl.    6.62419     -0.46384152     +0.16997356
    P   1.18           H   27.7           G   0.15           U   6
    Residuals in seconds of arc
    171019 T08  1.1+  0.3-    171019 246  0.4-  0.1-    171020 I52  0.5+  0.1+
    171019 T08  0.4-  0.3+    171019 104  0.2-  0.2-    171020 I52  0.3+  0.0
    171019 T08  0.1+  0.7-    171019 246  0.6-  1.1+    171020 W25  0.4-  0.1-
    171019 T08  0.4-  0.3+    171019 104  0.2+  0.4-    171020 W25  0.0   0.2-
    171019 246  0.3+  0.1+    171019 104  0.0   0.4-    171020 291  0.2-  0.2+
    171019 246  0.1+  0.6+    171019 J04  0.0   0.1-    171020 291  0.2+  0.0
    171019 246  0.1-  0.1-    171019 J04  0.1-  0.1-    171020 291  0.2-  0.2+
    171019 246  0.5+  0.1+    171019 J04  0.1-  0.1-    171021 G96  0.8-  0.0
    171019 246  0.7-  0.5+    171020 926  0.2-  0.1+    171021 G96  0.3+  0.2-
    171019 246  0.7-  0.6-    171020 926  0.1-  0.0     171021 G96  0.4+  0.5-
    171019 246  0.4+  0.4-    171020 926  0.4-  0.0     171021 G96  0.3+  0.2-
    171019 246 (1.6-  0.2+)   171020 I52  0.7+  0.2+
    171019 246  0.3+  0.2-    171020 I52  0.6+  0.3+
    
    Ephemeris:
    2017 UR2                 a,e,i = 1.12, 0.32, 7                   q = 0.7570
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 09 22    12 56 24.5 -24 25 26   0.1684  0.8601    28.8   145.8    31.2
    ...
    2017 10 07    13 03 08.1 -26 36 35   0.06696 0.9375    21.4   157.1    31.7
    ...
    2017 10 15    13 26 34.4 -28 29 47   0.01684 0.9814    20.1   159.5    29.6
    ...
    2017 10 21    00 35 19.7 +24 38 17   0.02070 1.0149   158.8    20.8    20.3
    2017 10 22    00 41 04.6 +25 06 56   0.02690 1.0204   159.1    20.4    20.9
    2017 10 23    00 44 44.6 +25 23 53   0.03312 1.0260   159.1    20.2    21.4
    ...
    2017 10 29    00 54 00.1 +25 53 56   0.07095 1.0593   157.6    20.9    23.1
    ...
    2017 11 06    00 59 37.9 +25 49 20   0.1232  1.1031   153.7    23.5    24.5
    ...
    2017 11 21    01 10 38.0 +25 20 45   0.2298  1.1815   144.0    29.5    26.2
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-U164
    

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