[Iaude] MPEC F42: COMET C/2018 F1 (Grauer)

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Mon Mar 19 17:29:17 EDT 2018


M.P.E.C. 2018-F42                                Issued 2018 Mar. 19, 21:13 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


                           COMET C/2018 F1 (Grauer)
 
Observations:
    CK18F010  C2017 12 22.64040 12 37 31.932-03 40 13.80         21.7 TUEF042F51
    CK18F010  C2017 12 22.64430 12 37 32.080-03 40 13.64         21.9 TUEF042F51
    CK18F010  C2017 12 22.64819 12 37 32.223-03 40 13.31         21.8 TUEF042F51
    CK18F010  C2017 12 22.65208 12 37 32.368-03 40 12.66         21.4 TUEF042F51
    CK18F010  C2018 01 17.65112 12 50 36.029-02 17 44.34         21.1 TUEF042F51
    CK18F010  C2018 01 17.65976 12 50 36.192-02 17 41.37         21.1 TUEF042F51
    CK18F010  C2018 02 23.37291 12 55 22.39 +02 30 28.5          19.5 TUEF042G96
    CK18F010  C2018 02 23.37804 12 55 22.34 +02 30 31.8          19.6 TUEF042G96
    CK18F010  C2018 02 23.38319 12 55 22.31 +02 30 34.8          19.7 TUEF042G96
    CK18F010  C2018 02 23.38832 12 55 22.26 +02 30 38.5          19.9 TUEF042G96
    CK18F010  C2018 03 10.44914 12 52 03.711+05 27 15.56         19.7 TUEF042F51
    CK18F010  C2018 03 10.47060 12 52 03.286+05 27 31.62         19.8 TUEF042F51
    CK18F010  C2018 03 10.48141 12 52 03.075+05 27 39.81         19.6 TUEF042F51
    CK18F010* C2018 03 17.34541 12 49 40.12 +06 55 32.5          19.1 TUEF042G96
    CK18F010  C2018 03 17.35057 12 49 40.00 +06 55 36.5          19.0 TUEF042G96
    CK18F010  C2018 03 17.35571 12 49 39.86 +06 55 40.4          19.0 TUEF042G96
    CK18F010  C2018 03 17.36087 12 49 39.74 +06 55 45.2          19.1 TUEF042G96
    CK18F010  C2018 03 17.44429 12 49 37.924+06 56 50.35         19.7 TUEF042F51
    CK18F010  C2018 03 17.45829 12 49 37.590+06 57 01.30         19.7 TUEF042F51
    CK18F010  C2018 03 17.45876 12 49 37.44 +06 57 01.0          18.8 TUEF042I52
    CK18F010  C2018 03 17.46182 12 49 37.35 +06 57 03.5          18.9 TUEF042I52
    CK18F010  C2018 03 17.46539 12 49 37.26 +06 57 06.2          18.9 TUEF042I52
    CK18F010  C2018 03 17.46908 12 49 37.19 +06 57 09.2          18.8 TUEF042I52
    CK18F010  C2018 03 17.47231 12 49 37.252+06 57 12.28         19.7 TUEF042F51
    CK18F010  C2018 03 17.48635 12 49 36.918+06 57 23.18         19.7 TUEF042F51
    CK18F010  C2018 03 17.50982 12 49 36.24 +06 57 40.9          18.9 TUEF042I52
    CK18F010  C2018 03 17.51243 12 49 36.18 +06 57 42.5          18.8 TUEF042I52
    CK18F010  C2018 03 17.51485 12 49 36.07 +06 57 44.6          18.2 TUEF042I52
    CK18F010  C2018 03 17.51750 12 49 36.02 +06 57 46.8          18.3 TUEF042I52
    CK18F010 KC2018 03 17.93332 12 49 26.64 +07 03 11.1          18.9 TtEF042B49
    CK18F010 KC2018 03 17.93706 12 49 26.55 +07 03 13.9          18.6 TtEF042B49
    CK18F010 KC2018 03 17.93897 12 49 26.51 +07 03 15.2          18.5 TtEF042B49
    CK18F010 KC2018 03 18.22677 12 49 19.82 +07 07 00.6          18.8 TuEF042850
    CK18F010 KC2018 03 18.24100 12 49 19.53 +07 07 12.5          19.1 TuEF042850
    CK18F010 KC2018 03 18.25523 12 49 19.19 +07 07 24.6          18.9 TuEF042850
    CK18F010 KC2018 03 18.26945 12 49 18.89 +07 07 34.8          19.2 TuEF042850
    CK18F010  C2018 03 18.32444 12 49 17.55 +07 08 18.3          19.0 TUEF042I52
    CK18F010  C2018 03 18.32904 12 49 17.43 +07 08 21.1          18.6 TUEF042I52
    CK18F010  C2018 03 18.33927 12 49 17.18 +07 08 30.0          19.7 TUEF042I52
    CK18F010  C2018 03 18.34447 12 49 17.07 +07 08 34.3          18.9 TUEF042I52
    CK18F010  C2018 03 18.44704 12 49 14.58 +07 09 54.2          18.8 TUEF042G96
    CK18F010  C2018 03 18.45215 12 49 14.46 +07 09 58.3          19.0 TUEF042G96
    CK18F010  C2018 03 18.45724 12 49 14.33 +07 10 02.3          18.9 TUEF042G96
    CK18F010  C2018 03 18.46234 12 49 14.21 +07 10 05.9          18.9 TUEF042G96
    CK18F010 9C2018 03 19.13322 12 48 58.48 +07 18 52.3          18.9 TUEF042G40
    CK18F010 9C2018 03 19.14073 12 48 58.28 +07 18 58.6          18.9 TUEF042G40
    CK18F010 KC2018 03 19.17076 12 48 57.71 +07 19 24.9          19.2 TqEF042W96
    CK18F010 KC2018 03 19.18963 12 48 57.26 +07 19 39.6          19.3 TqEF042W96
    CK18F010 KC2018 03 19.20849 12 48 56.80 +07 19 54.4          19.2 TqEF042W96
    CK18F010  C2018 03 19.29035 12 48 54.92 +07 20 55.2          18.7 TUEF042I52
    CK18F010  C2018 03 19.29451 12 48 54.78 +07 20 59.1                UEF042I52
    CK18F010  C2018 03 19.29870 12 48 54.67 +07 21 02.2                UEF042I52
    CK18F010  C2018 03 19.30176 12 48 54.59 +07 21 05.0          18.8 TUEF042I52
    CK18F010  C2018 03 19.39827 12 48 52.343+07 22 21.31         19.7 TUEF042F51
    CK18F010  C2018 03 19.41118 12 48 52.026+07 22 31.52         19.7 TUEF042F51
    CK18F010  C2018 03 19.42414 12 48 51.703+07 22 41.71         19.8 TUEF042F51
    CK18F010  C2018 03 19.43723 12 48 51.374+07 22 51.96         19.6 TUEF042F51
 
Observer details:
850 Cordell-Lorenz Observatory, Sewanee.  Observer D. T. Durig.  0.3-m f/7.6
    Schmidt-Cassegrain + CCD.
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4 Newtonian
    reflector + 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.
G40 Slooh.com Canary Islands Observatory.  Observer B. Lutkenhoner.  0.43-m
    f/6.8 Corrected Dall-Kirkham + CCD.
G96 Mt. Lemmon Survey.  Observers A. D. Grauer, J. A. Johnson.  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, R. G. Matheny.  1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers B. M. Africano,
    G. J. Leonard, R. A. Kowalski.  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.
W96 CAO, San Pedro de Atacama (since 2013).  Observers A. Maury, J.-B. Vanssay,
    J.-F. Soulier.  Measurer J.-F. Soulier.  0.4-m f/5.2 Ritchey-Chretien
    + CCD.
 
Orbital elements:
    C/2018 F1 (Grauer)
Epoch 2018 Dec. 28.0 TT = JDT 2458480.5
T 2018 Dec. 14.07301 TT                                 MPCW
q   2.9931078            (2000.0)            P               Q
z  +0.0030696      Peri.   71.62193     -0.34605495     +0.93759634
 +/-0.0000171      Node   177.29058     -0.86156437     -0.33193913
e   0.9908123      Incl.   46.07224     +0.37141999     +0.10358337
>From 57 observations 2017 Dec. 22-2018 Mar. 19, mean residual 0".4.

    C/2018 F1 (Grauer)
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2018 Dec. 14.11326 TT                                 MPCW
q   2.9930304            (2000.0)            P               Q
z  +0.0031557      Peri.   71.61732     -0.34593929     +0.93764614
 +/-0.0000171      Node   177.30688     -0.86153593     -0.33173298
e   0.9905548      Incl.   46.08672     +0.37159366     +0.10379283
>From 57 observations 2017 Dec. 22-2018 Mar. 19, mean residual 0".4.

Ephemeris:
    C/2018 F1 (Grauer)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2018 02 17    12 55 52.3 +01 24 56   3.3880  4.1490   135.3     9.6  20.3
...
2018 03 04    12 53 49.6 +04 08 22   3.1601  4.0558   151.0     6.8  20.1
...
2018 03 12    12 51 33.9 +05 46 49   3.0640  4.0069   158.9     5.1  20.0
...
2018 03 18    12 49 25.1 +07 04 05   3.0048  3.9706   163.9     4.0  19.9
2018 03 19    12 49 01.7 +07 17 09   2.9961  3.9646   164.6     3.8  19.9
2018 03 20    12 48 37.8 +07 30 14   2.9876  3.9586   165.2     3.7  19.9
...
2018 03 26    12 46 05.8 +08 49 14   2.9439  3.9227   167.2     3.2  19.8
...
2018 04 03    12 42 27.1 +10 33 45   2.9037  3.8754   164.3     4.0  19.7
...
2018 04 18    12 35 35.1 +13 36 40   2.8820  3.7887   150.6     7.5  19.6

Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-F42



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