• Processing (Info)

    • MPEC 2018-H06 : 2018 GY4

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    M.P.E.C. 2018-H06                                Issued 2018 Apr. 16, 16:36 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

                                   2018 GY4

Observations:
     K18G04Y* C2018 04 13.25818 09 22 35.952-22 47 13.61         20.8 wUEH006F51
     K18G04Y  C2018 04 13.26987 09 22 35.682-22 46 51.71         21.0 wUEH006F51
     K18G04Y  C2018 04 13.28159 09 22 35.408-22 46 29.83         20.9 wUEH006F51
     K18G04Y |C2018 04 14.03134 09 22 22.92 -22 23 08.7          20.7 VuEH006807
     K18G04Y |C2018 04 14.03440 09 22 22.85 -22 23 03.4          21.1 VuEH006807
     K18G04Y |C2018 04 14.03756 09 22 22.80 -22 22 57.4          20.7 VuEH006807
     K18G04Y HC2018 04 14.12937 09 22 21.56 -22 20 20.1          20.9 RoEH006691
     K18G04Y  C2018 04 14.13813 09 22 21.30 -22 20 03.4          20.2 GUEH006I52
     K18G04Y HC2018 04 14.13943 09 22 21.35 -22 20 01.2                oEH006691
     K18G04Y  C2018 04 14.13991 09 22 21.30 -22 20 00.4          20.5 GUEH006I52
     K18G04Y  C2018 04 14.14067 09 22 21.24 -22 19 58.2          20.9 GUEH006I52
     K18G04Y HC2018 04 14.14945 09 22 21.13 -22 19 42.6          20.6 RoEH006691
     K18G04Y |C2018 04 14.99546 09 22 10.27 -21 53 53.3          20.4 GUEH006807
     K18G04Y |C2018 04 14.99864 09 22 10.22 -21 53 47.5          20.7 GUEH006807
     K18G04Y |C2018 04 15.00227 09 22 10.18 -21 53 41.1          20.8 GUEH006807
     K18G04Y KC2018 04 15.12177 09 22 08.81 -21 50 16.7                oEH006691
     K18G04Y KC2018 04 15.13162 09 22 08.67 -21 49 59.1                oEH006691
     K18G04Y KC2018 04 15.14139 09 22 08.54 -21 49 42.5                oEH006691
     K18G04Y KC2018 04 16.20415 09 21 58.94 -21 18 15.9          20.0 RoEH006691
     K18G04Y KC2018 04 16.21924 09 21 58.72 -21 17 49.7          20.4 RoEH006691
     K18G04Y KC2018 04 16.23404 09 21 58.57 -21 17 23.5          20.9 RoEH006691

Observer details:
691 Steward Observatory, Kitt Peak.  Observers R. A. Mastaler, T. H. Bressi.
    0.9-m f/3 reflector + CCD.
807 Cerro Tololo.  Observers T. Linder, R. Holmes.  0.61-m f/6.5 astrograph
    + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
    M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
    M. Huber, E. Magnier, Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.
    1.8-m Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer A. R. Gibbs.  Measurers
    B. M. Africano, 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. L. Seaman,
    F. C. Shelly.  1.0-m reflector + CCD.

Orbital elements:
2018 GY4                                                 Earth MOID = 0.1734 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 131.13731              (2000.0)            P               Q
n   1.12088980     Peri.  102.77585     +0.94236118     -0.15792422
a   0.9178269      Node   266.88289     +0.04150402     +0.92997014
e   0.7046658      Incl.   17.18277     +0.33201328     +0.33198717
P   0.88           H   19.0           G   0.15           U   9
Residuals in seconds of arc
180413 F51  0.0   0.0     180414 I52  0.6-  0.1+    180415 807  0.2+  0.1+
180413 F51  0.0   0.0     180414 691  0.3+  0.1-    180415 691  0.0   0.2+
180413 F51  0.0   0.1-    180414 I52  0.2-  0.1-    180415 691  0.2+  0.1+
180414 807  0.1-  0.5+    180414 I52  0.8-  0.7+    180415 691  0.4+  0.8-
180414 807  0.2-  0.1+    180414 691  0.1-  0.1+    180416 691  0.5+  0.3+
180414 807  0.1-  0.3+    180414 807  0.0   0.2+    180416 691  0.4-  0.1-
180414 691  0.5+  0.5-    180414 807  0.0   0.3+    180416 691  0.4-  0.0

Ephemeris:
2018 GY4                 a,e,i = 0.92, 0.70, 17                  q = 0.2711
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 03 17    10 07 06.0 -40 01 41   0.5865  1.4579   132.7    30.1    20.0
...
2018 04 01    09 32 23.4 -29 57 36   0.6711  1.5132   128.8    31.0    20.4
...
2018 04 09    09 24 33.6 -25 06 02   0.7335  1.5343   123.6    32.9    20.6
...
2018 04 15    09 22 10.1 -21 53 48   0.7861  1.5465   119.1    34.5    20.9
2018 04 16    09 22 00.7 -21 24 08   0.7953  1.5482   118.3    34.8    20.9
2018 04 17    09 21 55.0 -20 55 08   0.8046  1.5498   117.6    35.0    20.9
...
2018 04 23    09 22 32.2 -18 15 11   0.8618  1.5578   112.9    36.5    21.1
...
2018 05 01    09 26 00.0 -15 17 35   0.9414  1.5637   106.7    38.1    21.4
...
2018 05 16    09 38 18.4 -11 18 04   1.0935  1.5600    95.6    40.2    21.7

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-H06

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