[Iaude] MPEC Y14: 2018 VG18 [a=95.23,e=0.77,i=31.7,H=3.6]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Mon Dec 17 09:37:17 EST 2018


M.P.E.C. 2018-Y14                                Issued 2018 Dec. 17, 14:12 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2018 VG18

     While it is clear that the current heliocentric distance of this object
is between 125 and 130 AU, the exact nature of the orbit is unclear.  The
orbit below is the lowest r.m.s. solution from the range of orbits
investigated.  The ephemeris uncertainty remains less than 10" for several
months.
 
Observations:
     K18V18G*5C2018 11 10.55241 04 49 36.353+18 53 10.69         24.6  VEY014568
     K18V18G 5C2018 11 10.59845 04 49 36.262+18 53 10.36         24.5  VEY014568
     K18V18G  C2018 12 03.18219 04 48 54.286+18 51 31.50         24.5  VEY014304
     K18V18G  C2018 12 03.30293 04 48 54.073+18 51 30.86               VEY014304
     K18V18G  C2018 12 04.12222 04 48 52.497+18 51 27.87               VEY014304
     K18V18G  C2018 12 08.19843 04 48 44.574+18 51 11.03               VEY014304
     K18V18G  C2018 12 08.22737 04 48 44.540+18 51 11.23               VEY014304
     K18V18G  C2018 12 09.13542 04 48 42.782+18 51 07.28         24.6 rVEY014304
     K18V18G  C2018 12 10.17341 04 48 40.755+18 51 03.18         24.5 rVEY014304
     K18V18G  C2018 12 11.20760 04 48 38.762+18 50 59.23               VEY014304
     K18V18G  C2018 12 12.21319 04 48 36.828+18 50 55.30         24.6 rVEY014304
 
Observer details:
304 Las Campanas Observatory.  Observers S. S. Sheppard, C. A. Trujillo,
    W. J. Oldroyd.  6.5-m Magellan-Baade telescope + CCD.
568 Mauna Kea.  Observers S. S. Sheppard, D. J. Tholen, C. A. Trujillo.
    8.2-m reflector + CCD.
 
Orbital elements:
2018 VG18
Epoch 2018 Nov. 18.0 TT = JDT 2458440.5                 MPC
M  73.76367              (2000.0)            P               Q
n   0.00106051     Peri.   32.88723     +0.10444281     +0.86799810
a  95.2342913      Node   247.44270     -0.98761569     +0.03305808
e   0.7717325      Incl.   31.71374     -0.11707664     +0.49546591
P 929              H    3.6           G   0.15
>From 11 observations 2018 Nov. 10-Dec. 12.  E-assumed.

Ephemeris:
2018 VG18                a,e,i = 95.23, 0.77, 32                 q = 21.739
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 11 17    04 49 24.9 +18 52 42 124.3330125.2666   160.7     0.1    24.6
...
2018 12 02    04 48 56.6 +18 51 37 124.2987125.2808   174.9     0.0    24.6
...
2018 12 10    04 48 41.1 +18 51 04 124.3083125.2884   174.3     0.0    24.6
...
2018 12 16    04 48 29.6 +18 50 41 124.3284125.2940   168.8     0.1    24.6
2018 12 17    04 48 27.7 +18 50 37 124.3328125.2950   167.8     0.1    24.6
2018 12 18    04 48 25.8 +18 50 33 124.3376125.2959   166.8     0.1    24.6
...
2018 12 24    04 48 14.6 +18 50 12 124.3720125.3016   160.8     0.1    24.6
...
2019 01 01    04 48 00.4 +18 49 47 124.4341125.3091   152.7     0.2    24.6
...
2019 01 16    04 47 36.7 +18 49 09 124.5968125.3233   137.5     0.3    24.6

Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-Y14



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