[Iaude] MPEC C77: COMET P/2018 C1 (Lemmon-Read)

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Sat Feb 10 21:17:18 EST 2018


M.P.E.C. 2018-C77                                Issued 2018 Feb. 11, 02:12 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


                         COMET P/2018 C1 (Lemmon-Read)
 
Observations:
    PK18C010  C2018 01 16.41712 09 33 28.898+08 51 39.06         20.6 TUEC077F51
    PK18C010  C2018 01 16.44082 09 33 28.305+08 51 37.39         20.6 TUEC077F51
    PK18C010  C2018 01 16.45267 09 33 28.010+08 51 36.62         20.6 TUEC077F51
    PK18C010  C2018 02 04.41871 09 23 33.88 +08 50 22.5          19.1 TUEC077G96
    PK18C010  C2018 02 04.42384 09 23 33.66 +08 50 22.6          18.9 TUEC077G96
    PK18C010  C2018 02 04.45096 09 23 32.65 +08 50 24.1          19.2 TUEC077G96
    PK18C010  C2018 02 04.45610 09 23 32.44 +08 50 24.4          18.7 TUEC077G96
    PK18C010  C2018 02 07.27448 09 21 49.09 +08 53 04.6          19.4 TUEC077I41
    PK18C010  C2018 02 07.29779 09 21 48.17 +08 53 05.3          19.4 TUEC077I41
    PK18C010  C2018 02 07.33676 09 21 46.67 +08 53 08.1          19.4 TUEC077I41
    PK18C010  C2018 02 09.28482 09 20 34.77 +08 55 18.6          18.4 TUEC077703
    PK18C010  C2018 02 09.28990 09 20 34.45 +08 55 19.0          19.1 ToEC077691
    PK18C010  C2018 02 09.29003 09 20 34.53 +08 55 18.9          18.5 TUEC077703
    PK18C010  C2018 02 09.29524 09 20 34.29 +08 55 19.7          18.6 TUEC077703
    PK18C010  C2018 02 09.29816 09 20 34.26 +08 55 19.1          19.5 TUEC077I41
    PK18C010  C2018 02 09.30045 09 20 34.11 +08 55 20.2          18.4 TUEC077703
    PK18C010  C2018 02 09.30549 09 20 33.90 +08 55 20.4          19.1 ToEC077691
    PK18C010  C2018 02 09.32107 09 20 33.31 +08 55 21.3          19.3 ToEC077691
    PK18C010  C2018 02 09.33330 09 20 32.90 +08 55 21.6          19.5 TUEC077I41
    PK18C010  C2018 02 09.35277 09 20 32.13 +08 55 22.7          19.6 TUEC077I41
    PK18C010  C2018 02 09.35573 09 20 32.03 +08 55 23.1          19.6 TUEC077I41
    PK18C010  C2018 02 09.37553 09 20 31.27 +08 55 24.7          19.6 TUEC077I41
    PK18C010  C2018 02 10.13873 09 20 03.41 +08 56 19.3          18.8 TUEC077I52
    PK18C010  C2018 02 10.15009 09 20 03.01 +08 56 20.6          18.9 TUEC077I52
    PK18C010  C2018 02 10.16153 09 20 02.59 +08 56 21.3          18.5 TUEC077I52
    PK18C010 |C2018 02 10.26532 09 19 58.61 +08 56 29.7                vEC077H06
    PK18C010 |C2018 02 10.26771 09 19 58.53 +08 56 30.0                vEC077H06
    PK18C010 |C2018 02 10.27010 09 19 58.45 +08 56 29.9          19.0 TvEC077H06
    PK18C010 KC2018 02 10.27310 09 19 58.24 +08 56 30.7          18.7 ToEC077291
    PK18C010 KC2018 02 10.27983 09 19 58.02 +08 56 31.0          18.7 ToEC077291
    PK18C010 KC2018 02 10.28654 09 19 57.79 +08 56 31.4          18.7 ToEC077291
    PK18C010 KC2018 02 10.31175 09 19 56.82 +08 56 32.7          19.2 ToEC077291
    PK18C010 KC2018 02 10.32070 09 19 56.47 +08 56 33.4          19.0 ToEC077291
    PK18C010 KC2018 02 10.32967 09 19 56.12 +08 56 34.0          19.0 ToEC077291
    PK18C010 KC2018 02 10.87977 09 19 36.08 +08 57 14.1          19.0 TqEC077C77
    PK18C010 KC2018 02 10.90348 09 19 35.16 +08 57 15.6          18.7 TqEC077C77
    PK18C010 KC2018 02 10.92837 09 19 34.21 +08 57 17.8          19.9 TqEC077C77
    PK18C010 KC2018 02 10.93062 09 19 34.12 +08 57 18.1          19.1 TUEC077203
    PK18C010 KC2018 02 10.93205 09 19 34.04 +08 57 17.5          18.1 TqEC077595
    PK18C010 KC2018 02 10.94340 09 19 33.61 +08 57 18.4                qEC077595
    PK18C010 KC2018 02 10.94843 09 19 33.39 +08 57 19.4          18.6 TUEC077203
    PK18C010 KC2018 02 10.95475 09 19 33.17 +08 57 19.7          18.5 TqEC077595
 
Observer details:
203 GiaGa Observatory.  Observers S. Foglia, G. Galli.  Measurer G. Galli.
    0.28-m f/6.8 Schmidt-Cassegrain + CCD.
291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
595 Farra d'Isonzo.  Observers U. Montanar, E. Pettarin, F. Piani.  Measurer
    E. Pettarin.  0.61-m f/4.0 reflector + CCD.
691 Steward Observatory, Kitt Peak.  Observers M. T. Read, M. T. R ed.  0.9-m
    f// reflector + CCD, 0.9-m f/3 reflector + CCD.
703 Catalina Sky Survey.  Observer G. J. Leonard.  Measurers 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. G. Matheny, R. L. Seaman, F. C. Shelly.
    0.68-m Schmidt + 10K CCD.
C77 Bernezzo Observatory.  Observer A. Mantero.  0.25-m f/4.0 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. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk.  1.8-m
    Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer J. A. Johnson.  Measurers 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. G. Matheny, R. L. Seaman, F. C. Shelly.
    1.5-m reflector + 10K CCD.
H06 iTelescope Observatory, Mayhill.  Observer H. Sato.  0.43-m f/6.8
    astrograph + CCD + f/4.5 focal reducer.
I41 Palomar Mountain--ZTF.  Measurers Q.-Z. Ye, F. Masci.  1.2-m f/2.44 Oschin
    Schmidt + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer J. A. Johnson.
    Measurers 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. G. Matheny,
    R. L. Seaman, F. C. Shelly.  1.0-m reflector + CCD.
 
Orbital elements:
    P/2018 C1 (Lemmon-Read)
Epoch 2018 Feb. 11.0 TT = JDT 2458160.5
T 2018 Feb. 25.15426 TT                                 MPCW
q   2.5944328            (2000.0)            P               Q
n   0.07494662     Peri.  234.24007     -0.81250242     -0.57606110
a   5.5714469      Node   270.42174     +0.55955467     -0.72763862
e   0.5343341      Incl.    5.12958     +0.16351879     -0.37241866
P  13.15
>From 42 observations 2018 Jan. 16-Feb. 10, mean residual 0".4.

    P/2018 C1 (Lemmon-Read)
Epoch 2031 Aug. 2.0 TT = JDT 2463080.5
T 2031 July 26.93412 TT                                 MPCW
q   2.6405384            (2000.0)            P               Q
n   0.07372759     Peri.  236.18809     -0.82539382     -0.55752275
a   5.6326922      Node   269.77524     +0.54288785     -0.74064051
e   0.5312120      Incl.    5.09720     +0.15491234     -0.37499336
P  13.37
>From 42 observations 2018 Jan. 16-Feb. 10, mean residual 0".4.

    P/2018 C1 (Lemmon-Read)
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2018 Feb. 25.16266 TT                                 MPCW
q   2.5944343            (2000.0)            P               Q
n   0.07494549     Peri.  234.24271     -0.81252702     -0.57602642
a   5.5715033      Node   270.42155     +0.55952359     -0.72766266
e   0.5343386      Incl.    5.12956     +0.16350287     -0.37242532
P  13.15
>From 42 observations 2018 Jan. 16-Feb. 10, mean residual 0".4.

Ephemeris:
    P/2018 C1 (Lemmon-Read)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2018 01 12    09 34 59.4 +08 57 47   1.7307  2.6172   148.0    11.5  18.9
...
2018 01 27    09 28 28.5 +08 46 24   1.6436  2.6044   164.0     6.0  18.7
...
2018 02 04    09 23 49.3 +08 50 04   1.6204  2.5997   171.7     3.1  18.7
...
2018 02 10    09 20 08.3 +08 56 12   1.6142  2.5971   173.6     2.4  18.7
2018 02 11    09 19 31.5 +08 57 27   1.6142  2.5968   173.2     2.6  18.7
2018 02 12    09 18 54.9 +08 58 44   1.6143  2.5965   172.7     2.8  18.7
...
2018 02 18    09 15 22.3 +09 07 24   1.6211  2.5950   167.6     4.7  18.7
...
2018 02 26    09 11 13.9 +09 20 07   1.6447  2.5944   159.3     7.8  18.7
...
2018 03 13    09 06 31.0 +09 41 12   1.7300  2.5974   143.5    13.1  18.8

Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-C77



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