• Processing (Info)

    • MPEC 2017-H02 : COMET C/2017 E1 (Borisov)

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    M.P.E.C. 2017-H02                                Issued 2017 Apr. 16, 02:44 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

                           COMET C/2017 E1 (Borisov)

Observations:
    CK17E010 1C2017 03 06.78671 19 36 21.28 -10 02 47.7                vEH002Q62
    CK17E010 1C2017 03 06.78822 19 36 21.78 -10 02 46.8                vEH002Q62
    CK17E010 1C2017 03 06.78972 19 36 22.27 -10 02 45.9          13.1 TvEH002Q62
    CK17E010 @C2017 03 26.51110 21 26 21.54 -06 48 03.4          16.1 NUEH002695
    CK17E010 @C2017 03 26.51340 21 26 22.26 -06 48 02.5          16.0 NUEH002695
    CK17E010 @C2017 03 26.51572 21 26 23.07 -06 48 00.1          16.3 NUEH002695
    CK17E010 @C2017 03 26.51804 21 26 23.79 -06 47 58.4          16.1 NUEH002695
    CK17E010 @C2017 03 26.52036 21 26 24.56 -06 47 57.3          16.0 NUEH002695
    CK17E010 @C2017 03 26.52266 21 26 25.32 -06 47 55.3          16.2 NUEH002695
    CK17E010 @C2017 03 26.52497 21 26 26.09 -06 47 53.2          16.0 NUEH002695
    CK17E010 KC2017 03 27.14855 21 29 51.26 -06 40 01.1          15.3 NqEH002A71
    CK17E010 KC2017 03 27.15053 21 29 51.83 -06 40 00.3          15.7 NqEH002A71
    CK17E010 KC2017 03 27.15251 21 29 52.51 -06 39 57.1          14.5 NvEH002A71
    CK17E010  C2017 03 27.81433 21 33 30.12 -06 31 30.6                mEH002349
    CK17E010  C2017 03 27.81815 21 33 31.32 -06 31 27.5                mEH002349
    CK17E010  C2017 03 27.82220 21 33 32.68 -06 31 25.2          12.4 TmEH002349
    CK17E010 KC2017 04 01.83461 22 00 34.91 -05 25 10.3                uEH002367
    CK17E010 KC2017 04 01.83582 22 00 35.38 -05 25 09.1          12.4 TuEH002367
    CK17E010  C2017 04 04.80140 22 16 12.29 -04 44 33.0                qEH002D95
    CK17E010  C2017 04 04.80178 22 16 12.40 -04 44 32.8                qEH002D95
    CK17E010  C2017 04 04.80332 22 16 12.96 -04 44 31.9          13.0 TqEH002D95
    CK17E010  C2017 04 04.80640 22 16 13.84 -04 44 28.6                mEH002349
    CK17E010  C2017 04 04.81150 22 16 15.42 -04 44 24.6          12.2 TmEH002349
    CK17E010  C2017 04 05.81002 22 21 26.55 -04 30 36.6          12.3 TmEH002349
    CK17E010  C2017 04 05.81296 22 21 27.48 -04 30 33.6                mEH002349
    CK17E010  C2017 04 07.40385 22 29 38.55 -04 08 19.9          15.6 NUEH002W97
    CK17E010  C2017 04 07.40854 22 29 40.02 -04 08 15.7          15.7 NUEH002W97
    CK17E010  C2017 04 07.41449 22 29 41.81 -04 08 12.8          15.6 NUEH002W97

Observer details:
349 Ageo.  Observer K. Kadota.  0.25-m f/5.0 reflector + CCD.
367 Yatsuka.  Observer H. Abe.  0.26-m f/6.0 reflector + CCD.
695 Kitt Peak.  Observers M.-T. Hui, A. Graykowski.  Measurer M.-T. Hui.
    0.9-m WIYN reflector + CCD.
A71 Stixendorf.  Observers M. Jaeger, W. Vollmann, E. Prosperi, S. Prosperi.
    Measurer W. Vollmann.  0.3-m f/4 reflector + CCD.
D95 Kurihara.  Observer T. Takahashi.  0.25-m f/4.2 reflector + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observer H. Sato.  0.40-m f/3.5
    astrograph + CCD.
W97 Atacama Desert Observatory, San Pedro de Atacama.  Observers A. Maury,
    B. Sandness, T. Noel.  Measurer T. Noel.  0.38-m f/4.6 Newtonian reflector
    + CCD.

Orbital elements:
    C/2017 E1 (Borisov)
Epoch 2017 Mar. 28.0 TT = JDT 2457840.5
T 2017 Apr. 10.13868 TT                                 MPCW
q   0.9006612            (2000.0)            P               Q
z  -0.0028383      Peri.  152.47289     +0.43485688     +0.88755018
 +/-0.0003156      Node   142.73327     -0.86548978     +0.45859931
e   1.0025564      Incl.   14.55408     -0.24865023     -0.04406072
From 162 observations 2017 Mar. 1-Apr. 7, mean residual 0".7.

    C/2017 E1 (Borisov)
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5
T 2017 Apr. 10.13840 TT                                 MPCW
q   0.9006634            (2000.0)            P               Q
z  -0.0028439      Peri.  152.47217     +0.43485078     +0.88755339
 +/-0.0003156      Node   142.73359     -0.86549326     +0.45859302
e   1.0025614      Incl.   14.55406     -0.24864879     -0.04406168
From 162 observations 2017 Mar. 1-Apr. 7, mean residual 0".7.

Ephemeris:
    C/2017 E1 (Borisov)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2017 03 17    20 33 20.2 -08 37 02   1.3229  0.9999    48.6    48.3  14.6
...
2017 04 01    21 56 07.5 -05 36 22   1.3572  0.9158    42.4    47.4  14.3
...
2017 04 09    22 37 44.5 -03 46 04   1.4041  0.9009    39.7    45.3  14.3
...
2017 04 15    23 07 16.5 -02 22 03   1.4488  0.9050    38.1    43.2  14.4
2017 04 16    23 12 02.7 -02 08 08   1.4569  0.9069    37.9    42.8  14.4
2017 04 17    23 16 46.2 -01 54 16   1.4651  0.9092    37.7    42.5  14.4
...
2017 04 23    23 44 09.7 -00 32 35   1.5171  0.9302    36.7    40.2  14.6
...
2017 05 01    00 18 05.7 +01 10 10   1.5914  0.9759    36.0    37.3  14.9
...
2017 05 16    01 13 58.6 +03 55 06   1.7347  1.1040    36.7    33.2  15.6

Gareth V. Williams           (C) Copyright 2017 MPC           M.P.E.C. 2017-H02

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