[Iaude] MPEC B20: COMET C/2017 A1 (PANSTARRS)

[mpec at si.edu]

M.P.E.C. 2017-B20                                Issued 2017 Jan. 18, 18:03 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 http://www.minorplanetcenter.net/    ISSN 1523-6714


                          COMET C/2017 A1 (PANSTARRS)
 
Observations:
    CK17A010 KC2017 01 06.50335 05 19 17.66 -23 24 16.7          17.6 NqEB020Q21
    CK17A010 KC2017 01 06.51456 05 19 17.14 -23 24 03.4          17.4 NqEB020Q21
    CK17A010 KC2017 01 06.54525 05 19 15.72 -23 23 26.8          18.1 NqEB020Q21
    CK17A010 KC2017 01 06.55644 05 19 14.95 -23 23 15.8          18.7 NqEB020Q21
    CK17A010 |C2017 01 14.59683 05 13 32.11 -20 35 59.3          18.5 NvEB020Q62
    CK17A010 |C2017 01 14.60152 05 13 31.89 -20 35 52.8          18.3 NvEB020Q62
    CK17A010 |C2017 01 14.60622 05 13 31.70 -20 35 46.4          17.8 NvEB020Q62
 
Observer details:
Q21 Southern Utsunomiya.  Observer H. Nohara.  0.4-m f/3.8 astrograph + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observers S. Foglia, L. Buzzi,
    P. Concari, C. Cremaschini, G. Galli, M. Tombelli.  0.15-m f/7 refractor
    + CCD.
 
Orbital elements:
    C/2017 A1 (PANSTARRS)
Epoch 2017 May 7.0 TT = JDT 2457880.5
T 2017 May 17.12912 TT                                  MPCW
q   2.2908208            (2000.0)            P               Q
z  +0.0127138      Peri.    2.02988     -0.53531036     -0.53431280
 +/-0.0010704      Node   121.06758     +0.76379805     -0.63688698
e   0.9708750      Incl.   49.79423     +0.36063190     +0.55577406
>From 61 observations 2017 Jan. 2-14, mean residual 0".6.

    C/2017 A1 (PANSTARRS)
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5
T 2017 May 17.12148 TT                                  MPCW
q   2.2908411            (2000.0)            P               Q
z  +0.0126966      Peri.    2.02671     -0.53528590     -0.53434910
 +/-0.0010704      Node   121.06790     +0.76383042     -0.63684894
e   0.9709142      Incl.   49.79347     +0.36059963     +0.55578275
>From 61 observations 2017 Jan. 2-14, mean residual 0".6.

Ephemeris:
    C/2017 A1 (PANSTARRS)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2016 12 19    05 35 48.5 -28 02 39   2.0963  2.8157   128.5    15.9  19.1
...
2017 01 03    05 22 09.4 -24 28 53   2.0120  2.7260   127.6    16.6  18.9
...
2017 01 11    05 15 56.0 -21 53 48   1.9875  2.6805   125.5    17.4  18.8
...
2017 01 17    05 12 05.9 -19 41 35   1.9786  2.6476   123.1    18.1  18.7
2017 01 18    05 11 32.4 -19 18 23   1.9780  2.6422   122.7    18.3  18.7
2017 01 19    05 11 00.3 -18 54 53   1.9775  2.6368   122.2    18.4  18.7
...
2017 01 25    05 08 20.2 -16 28 10   1.9795  2.6053   119.2    19.3  18.6
...
2017 02 02    05 06 18.9 -13 00 37   1.9943  2.5651   114.5    20.5  18.6
...
2017 02 17    05 07 27.6 -06 14 31   2.0562  2.4958   104.6    22.5  18.5

Gareth V. Williams           (C) Copyright 2017 MPC           M.P.E.C. 2017-B20