[Iaude] MPEC P84: COMET C/2018 KJ3 (Lemmon)

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Mon Aug 13 12:59:16 EDT 2018


M.P.E.C. 2018-P84                                Issued 2018 Aug. 13, 16:49 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 KJ3 (Lemmon)

     M. Micheli (568) reported that this object was clearly a comet, with a
~ 5" tail to the E and coma FWHM ~1".0 (in 0".6 seeing) in images obtained on
Aug. 7.
 
Observations:
    CK18K03J* C2018 05 17.40610 20 19 11.99 +05 17 13.3          19.9 GUEP084G96
    CK18K03J  C2018 05 17.41087 20 19 11.84 +05 17 13.2          19.9 GUEP084G96
    CK18K03J  C2018 05 17.41566 20 19 11.69 +05 17 13.2          19.8 GUEP084G96
    CK18K03J  C2018 05 17.42044 20 19 11.54 +05 17 13.0          20.2 GUEP084G96
    CK18K03J  C2018 05 17.43785920 19 11.03 +05 17 12.6          20.0 GVEP084H01
    CK18K03J  C2018 05 17.44512620 19 10.81 +05 17 12.4          19.8 GVEP084H01
    CK18K03J  C2018 05 17.45294120 19 10.57 +05 17 12.2          19.7 GVEP084H01
    CK18K03J  C2018 05 17.45671720 19 10.46 +05 17 12.1          20.0 GVEP084H01
    CK18K03J (C2018 05 18.16053 20 18 49.44 +05 16 54.1          19.8 GUEP084G40
    CK18K03J (C2018 05 18.16338 20 18 49.36 +05 16 54.0          19.8 GUEP084G40
    CK18K03J  C2018 05 18.36117420 18 43.39 +05 16 48.4          20.0 GVEP084H01
    CK18K03J  C2018 05 18.36873020 18 43.16 +05 16 48.2          19.9 GVEP084H01
    CK18K03J  C2018 05 18.37628520 18 42.93 +05 16 48.0          19.9 GVEP084H01
    CK18K03J  C2018 05 18.37994 20 18 42.75 +05 16 47.9          19.7 GUEP084I52
    CK18K03J  C2018 05 18.38383920 18 42.70 +05 16 47.7          19.9 GVEP084H01
    CK18K03J  C2018 05 18.39117 20 18 42.48 +05 16 47.5          19.8 GUEP084I52
    CK18K03J  C2018 05 18.39903 20 18 42.23 +05 16 47.0          19.8 GUEP084I52
    CK18K03J |C2018 05 18.43781 20 18 41.03 +05 16 46.2                vEP084H06
    CK18K03J |C2018 05 18.44100 20 18 40.92 +05 16 46.0                vEP084H06
    CK18K03J |C2018 05 18.44419 20 18 40.84 +05 16 45.8          20.3 wvEP084H06
    CK18K03J  C2018 05 19.06512 20 18 21.74 +05 16 27.3          20.3 VSEP084L01
    CK18K03J  C2018 05 19.06733 20 18 21.65 +05 16 27.1          20.5 VSEP084L01
    CK18K03J  C2018 05 19.08499 20 18 21.08 +05 16 26.6          20.6 VSEP084L01
    CK18K03J  C2018 05 19.39205 20 18 11.55 +05 16 17.5          19.7 GUEP084I52
    CK18K03J  C2018 05 19.39892 20 18 11.31 +05 16 16.5          19.7 GUEP084I52
    CK18K03J  C2018 05 19.40579 20 18 11.10 +05 16 16.3          19.5 GUEP084I52
    CK18K03J  C2018 05 19.41266 20 18 10.88 +05 16 16.2          19.6 GUEP084I52
    CK18K03J 9C2018 05 19.54659620 18 06.60 +05 16 12.1          19.8 RuEP084F65
    CK18K03J 9C2018 05 19.54887820 18 06.56 +05 16 12.1          19.8 RuEP084F65
    CK18K03J 9C2018 05 19.55114220 18 06.48 +05 16 12.0          19.8 RuEP084F65
    CK18K03J 9C2018 05 19.55340520 18 06.39 +05 16 11.9          19.8 RuEP084F65
    CK18K03J 9C2018 05 19.55566820 18 06.34 +05 16 11.7          19.9 RuEP084F65
    CK18K03J 9C2018 05 19.55793120 18 06.26 +05 16 11.8          19.8 RuEP084F65
    CK18K03J  C2018 05 20.01236 20 17 51.90 +05 15 54.7          20.4 VUEP084L01
    CK18K03J  C2018 05 20.01456 20 17 51.81 +05 15 55.3          20.4 VUEP084L01
    CK18K03J  C2018 05 20.01676 20 17 51.74 +05 15 55.3          20.4 VUEP084L01
    CK18K03J  C2018 05 20.01897 20 17 51.66 +05 15 54.7          20.3 VUEP084L01
    CK18K03J  C2018 05 20.02119 20 17 51.61 +05 15 55.3          20.5 VUEP084L01
    CK18K03J  C2018 05 20.02339 20 17 51.53 +05 15 54.3          20.5 VUEP084L01
    CK18K03J KC2018 05 20.05450620 17 50.53 +05 15 54.2          20.5 VqEP084C95
    CK18K03J KC2018 05 20.07401720 17 49.91 +05 15 53.1          20.0 VqEP084C95
    CK18K03J KC2018 05 20.09354120 17 49.27 +05 15 52.2          19.7 VqEP084C95
    CK18K03J  C2018 05 20.42736 20 17 38.55 +05 15 40.6          19.4 GUEP084I52
    CK18K03J  C2018 05 20.43430 20 17 38.31 +05 15 40.2          19.6 GUEP084I52
    CK18K03J  C2018 05 20.44123 20 17 38.05 +05 15 39.3          19.5 GUEP084I52
    CK18K03J HC2018 05 20.46072 20 17 37.43 +05 15 39.5                oEP084691
    CK18K03J HC2018 05 20.46436 20 17 37.30 +05 15 38.8                oEP084691
    CK18K03J  C2018 05 21.42284 20 17 05.85 +05 14 59.5                UEP084I52
    CK18K03J  C2018 05 21.43057 20 17 05.54 +05 14 59.6          19.5 GUEP084I52
    CK18K03J HC2018 05 21.43451 20 17 05.44 +05 14 59.9          19.5 RoEP084691
    CK18K03J  C2018 05 21.43735 20 17 05.34 +05 14 59.3          19.5 GUEP084I52
    CK18K03J HC2018 05 21.44872 20 17 04.97 +05 14 59.3          20.0 RoEP084691
    CK18K03J HC2018 05 21.46297 20 17 04.46 +05 14 58.7                oEP084691
    CK18K03J  C2018 05 22.39207 20 16 33.07 +05 14 16.3          19.9 GUEP084I52
    CK18K03J  C2018 05 22.39911 20 16 32.87 +05 14 16.1          19.8 GUEP084I52
    CK18K03J  C2018 05 22.41146 20 16 32.42 +05 14 15.0          19.8 GUEP084I52
    CK18K03J KC2018 05 23.03335 20 16 10.90 +05 13 44.4          19.7 GUEP084J77
    CK18K03J KC2018 05 23.04933 20 16 10.36 +05 13 43.2          20.1 GUEP084J77
    CK18K03J KC2018 05 23.06396 20 16 09.89 +05 13 42.9          19.9 GUEP084J77
    CK18K03J KC2018 05 23.07846 20 16 09.34 +05 13 41.8          19.6 GUEP084J77
    CK18K03J KC2018 05 23.27781 20 16 02.35 +05 13 34.5          19.8 RqEP084W96
    CK18K03J KC2018 05 23.29435 20 16 01.78 +05 13 33.2          19.9 RqEP084W96
    CK18K03J KC2018 05 23.31088 20 16 01.22 +05 13 31.9          20.1 RqEP084W96
    CK18K03J  C2018 05 23.38372 20 15 58.63 +05 13 26.3          19.9 GUEP084I52
    CK18K03J  C2018 05 23.38977 20 15 58.44 +05 13 26.1          20.1 GUEP084I52
    CK18K03J  C2018 05 23.39649 20 15 58.18 +05 13 25.8          19.6 GUEP084I52
    CK18K03J  C2018 05 23.40406 20 15 57.92 +05 13 25.7          19.4 GUEP084I52
    CK18K03J  C2018 05 24.37716 20 15 23.22 +05 12 31.9          20.2 GUEP084I52
    CK18K03J  C2018 05 24.38279 20 15 23.00 +05 12 31.3          19.5 GUEP084I52
    CK18K03J  C2018 05 24.39008 20 15 22.73 +05 12 30.7          19.9 GUEP084I52
    CK18K03J  C2018 05 24.39673 20 15 22.50 +05 12 30.4          19.8 GUEP084I52
    CK18K03J KC2018 05 24.97262320 15 01.51 +05 11 55.8          20.3 GUEP084K41
    CK18K03J KC2018 05 24.97734020 15 01.39 +05 11 55.7          20.7 GUEP084K41
    CK18K03J KC2018 05 24.98169520 15 01.22 +05 11 55.2          20.1 GUEP084K41
    CK18K03J  C2018 05 25.37689 20 14 46.56 +05 11 29.8                UEP084I52
    CK18K03J  C2018 05 25.38419 20 14 46.22 +05 11 29.9          19.8 GUEP084I52
    CK18K03J  C2018 05 25.39880 20 14 45.62 +05 11 29.8                UEP084I52
    CK18K03J  C2018 05 26.56453 20 14 01.772+05 10 12.70         19.8 iUEP084F51
    CK18K03J  C2018 05 26.57523 20 14 01.352+05 10 12.02         19.7 iUEP084F51
    CK18K03J  C2018 05 26.58597 20 14 00.939+05 10 11.21         19.9 iUEP084F51
    CK18K03J  C2018 05 26.59672 20 14 00.521+05 10 10.33         19.7 iUEP084F51
    CK18K03J ^C2018 05 28.37454 20 12 50.95 +05 07 57.5          19.5 RoEP084695
    CK18K03J ^C2018 05 28.37881 20 12 50.77 +05 07 57.2          19.4 RoEP084695
    CK18K03J ^C2018 05 28.38309 20 12 50.60 +05 07 56.9          19.4 RoEP084695
    CK18K03J KC2018 05 30.31348 20 11 31.52 +05 05 11.2          20.0 RoEP084691
    CK18K03J KC2018 05 30.32251 20 11 31.13 +05 05 10.5          20.1 RoEP084691
    CK18K03J _C2018 06 06.58068020 06 01.343+04 51 25.76         19.9 GVEP084568
    CK18K03J _C2018 06 06.58186520 06 01.281+04 51 25.60         19.8 GVEP084568
    CK18K03J OC2018 06 06.73752 20 05 53.62 +04 51 06.2          19.3 GVEP084Q62
    CK18K03J OC2018 06 06.76034 20 05 52.52 +04 51 02.7          20.5 GVEP084Q62
    CK18K03J KC2018 06 10.03821 20 03 06.54 +04 42 49.6          18.8 RqEP084157
    CK18K03J KC2018 06 10.04557 20 03 06.21 +04 42 48.4          19.0 RqEP084157
    CK18K03J KC2018 06 10.05293 20 03 05.82 +04 42 47.2          19.2 RqEP084157
    CK18K03J KC2018 06 13.04896 20 00 25.27 +04 34 11.3          19.9 RQEP084J01
    CK18K03J KC2018 06 13.07729 20 00 23.69 +04 34 06.2          19.1 RQEP084J01
    CK18K03J KC2018 06 13.08438 20 00 23.29 +04 34 05.1          19.4 RQEP084J01
    CK18K03J KC2018 06 17.03369 19 56 39.16 +04 21 02.1          19.2 RqEP084157
    CK18K03J KC2018 06 17.03789 19 56 38.94 +04 21 01.0          18.9 RqEP084157
    CK18K03J KC2018 06 17.04209 19 56 38.65 +04 21 00.3          19.0 RqEP084157
    CK18K03J KC2018 06 17.04630 19 56 38.47 +04 20 59.3          18.9 RqEP084157
    CK18K03J KC2018 06 17.05052 19 56 38.20 +04 20 58.3          19.1 RqEP084157
    CK18K03J KC2018 06 17.05474 19 56 37.93 +04 20 57.4          18.9 RqEP084157
    CK18K03J KC2018 06 17.05842 19 56 37.73 +04 20 57.0          18.9  qEP084104
    CK18K03J KC2018 06 17.06610 19 56 37.25 +04 20 55.3          19.5  qEP084104
    CK18K03J KC2018 06 17.07377 19 56 36.79 +04 20 53.2          19.1  qEP084104
    CK18K03J HC2018 06 19.36532 19 54 20.55 +04 12 23.9          19.0 RoEP084691
    CK18K03J HC2018 06 19.38050 19 54 19.67 +04 12 20.4          19.0 RoEP084691
    CK18K03J HC2018 06 19.39571 19 54 18.74 +04 12 16.7                oEP084691
    CK18K03J HC2018 06 20.34544 19 53 20.97 +04 08 33.4          19.0 RoEP084691
    CK18K03J HC2018 06 20.35808 19 53 20.20 +04 08 30.4          19.1 RoEP084691
    CK18K03J HC2018 06 20.37107 19 53 19.39 +04 08 27.1          18.9 RoEP084691
    CK18K03J 8C2018 06 22.01316 19 51 37.74 +04 01 43.3          19.0 RqEP084094
    CK18K03J 8C2018 06 22.01422 19 51 37.67 +04 01 43.1          18.1 RqEP084094
    CK18K03J 8C2018 06 22.01528 19 51 37.61 +04 01 42.8          18.9 RqEP084094
    CK18K03J 8C2018 06 22.01634 19 51 37.53 +04 01 42.6          18.8 RqEP084094
    CK18K03J KC2018 06 22.43192 19 51 11.54 +03 59 56.8          19.0 RoEP084291
    CK18K03J KC2018 06 22.43566 19 51 11.25 +03 59 56.3          19.2 RoEP084291
    CK18K03J KC2018 06 22.43940 19 51 11.01 +03 59 55.3          19.4 RoEP084291
    CK18K03J KC2018 07 07.96528 19 33 35.87 +02 37 40.7          18.3 RqEP084A17
    CK18K03J KC2018 07 07.97699 19 33 35.02 +02 37 35.9          18.4 RqEP084A17
    CK18K03J KC2018 07 07.98871 19 33 34.13 +02 37 32.3          18.7 RqEP084A17
    CK18K03J KC2018 07 08.94671 19 32 24.88 +02 31 24.9          18.7 RqEP084157
    CK18K03J KC2018 07 08.95408 19 32 24.31 +02 31 22.3          18.6 RqEP084157
    CK18K03J KC2018 07 08.96146 19 32 23.81 +02 31 18.8          18.7 RqEP084157
    CK18K03J KC2018 08 04.88556 18 59 22.58 -01 02 08.3          18.3 RqEP084157
    CK18K03J KC2018 08 04.89099 18 59 22.17 -01 02 11.3          18.4 RqEP084157
    CK18K03J _C2018 08 07.32568518 56 31.395-01 24 24.83         19.4 GVEP084568
    CK18K03J _C2018 08 07.32755918 56 31.264-01 24 25.85         19.3 GVEP084568
    CK18K03J _C2018 08 07.32942818 56 31.132-01 24 26.88         19.1 GVEP084568
    CK18K03J _C2018 08 07.33130218 56 31.003-01 24 27.99         18.8 GVEP084568
 
Observer details:
094 Crimea-Simeis.  Observer A. Novichonok.  1.0-m f/13 reflector + CCD.
104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri,
    M. D. Grazia.  Measurers P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector
    + CCD.
157 Frasso Sabino.  Observers R. Haver, R. Gorelli.  Measurer R. Haver.
    0.37-m f/6.70 Cassegrain + CCD.
291 LPL/Spacewatch II.  Observer J. V. Scotti.  1.8-m f/2.7 reflector + CCD.
568 Mauna Kea.  Observers K. Meech, J. Kleyna, K. J. Meech.  Measurers
    M. Micheli, J. Kleyna.  3.6-m Canada-France-Hawaii Telescope + CCD.
691 Steward Observatory, Kitt Peak-Spacewatch.  Observers T. H. Bressi,
    J. V. Scotti.  0.9-m f/3 reflector + CCD.
695 Kitt Peak.  Observer J. V. Scotti.  2.3-m f/9 reflector + CCD.
A17 Guidestar Observatory, Weinheim.  Observers M. Emmerich, S. Melchert.
    0.36-m f/6 Schmidt-Cassegrain + CCD.
C95 SATINO Remote Observatory, Haute Provence.  Observer J. Jahn.  0.60-m
    f/3.2 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.
F65 Haleakala-Faulkes Telescope North.  Observer J. D. Armstrong.  2.0-m f/10
    reflector + CCD.
G40 Slooh.com Canary Islands Observatory.  Observer K. Dankov.  0.5-m f/6.8
    Corrected Dall-Kirkham + CCD.
G96 Mt. Lemmon Survey.  Observers H. Groeller, G. J. Leonard.  Measurers
    B. M. Africano, E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
    H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
    R. L. Seaman, F. C. Shelly.  1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
H06 iTelescope Observatory, Mayhill.  Observer H. Sato.  0.43-m f/6.8
    astrograph + CCD + f/4.5 focal reducer.
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, H. Groeller,
    J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman,
    F. C. Shelly.  1.0-m reflector + CCD.
J01 Observatorio Cielo Profundo, Leon.  Observer J. Gonzalez.  0.23-m f/7
    Schmidt-Cassegrain + CCD.
J77 Golden Hill Observatory, Stourton Caundle.  Observer R. Miles.  0.35-m
    f/8 Schmidt-Cassegrain + CCD.
K41 Vegaquattro Astronomical Observatory, Novi Ligure.  Observer V. Luna.
    0.3-m Schmidt-Cassegrain + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observer G. Baj.  0.70-m f/6.6
    reflector + CCD.
W96 CAO, San Pedro de Atacama (since 2013).  Observers A. Maury, J.-B. de
    Vanssay, J.-F. Soulier.  Measurer J.-F. Soulier.  0.4-m f/5.2
    Ritchey-Chretien + CCD.
 
Orbital elements:
    C/2018 KJ3 (Lemmon)
Epoch 2019 Aug. 25.0 TT = JDT 2458720.5
T 2019 Sept.  9.52550 TT                                MPCW
q   3.6281760            (2000.0)            P               Q
z  +0.0012347      Peri.  217.63389     -0.42220723     -0.59318585
 +/-0.0000587      Node    91.59586     -0.57109677     +0.76129693
e   0.9955203      Incl.  136.70634     -0.70398121     -0.26183492
>From 130 observations 2018 May 17-Aug. 7, mean residual 0".4.

    C/2018 KJ3 (Lemmon)
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2019 Sept. 10.02431 TT                                MPCW
q   3.6271353            (2000.0)            P               Q
z  +0.0012280      Peri.  217.71469     -0.42285630     -0.59213299
 +/-0.0000587      Node    91.58833     -0.56984051     +0.76234248
e   0.9955458      Incl.  136.66636     -0.70460936     -0.26117516
>From 130 observations 2018 May 17-Aug. 7, mean residual 0".4.

Ephemeris:
    C/2018 KJ3 (Lemmon)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2018 07 14    19 26 14.4 +01 57 14   4.2181  5.1648   156.3     4.5        19.3
...
2018 07 29    19 07 39.6 -00 01 09   4.1588  5.0780   152.0     5.4        19.3
...
2018 08 06    18 58 04.0 -01 12 14   4.1628  5.0321   145.5     6.5        19.3
...
2018 08 12    18 51 13.4 -02 07 55   4.1812  4.9979   139.8     7.5        19.3
2018 08 13    18 50 07.2 -02 17 20   4.1854  4.9922   138.8     7.7        19.3
2018 08 14    18 49 01.7 -02 26 47   4.1900  4.9865   137.7     7.9        19.4
...
2018 08 20    18 42 45.1 -03 23 54   4.2244  4.9526   131.4     8.8        19.4
...
2018 08 28    18 35 11.0 -04 40 24   4.2862  4.9076   122.8    10.0        19.5
...
2018 09 12    18 23 47.3 -07 00 42   4.4409  4.8244   106.5    11.5        19.6

Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-P84



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