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M.P.E.C. 2019-K18                                Issued 2019 May 24, 14:32 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/2019 JU6 (ATLAS)

     Initially reported (and designated on MPS 996641) as an asteroid,
subsquent observation has shown the object to be a comet.  L. Buzzi (204,
May 14) reported a 12" coma and a faint 12" tail in P.A. ~230 in 30 stacked
30-s exposures.  B. Lutkenhoner (G40, May 14) described a 5".2 FWHM (compared
to 4".4 for field stars) and a faint tail at least 13" long in P.A. 230 in
15 stacked 50-s exposures.  Lutkenhoner (G40, May 18) noted a 6".4 FWHM
(compared to 3".7 for field stars).  R. Wainscoat (F52, May 21) suspected
that the images showed cometary features.

Observations:
    CK19J06U* C2019 05 12.57373521 24 54.26 +20 28 23.7          18.82oVEK018T05
    CK19J06U  C2019 05 12.57655721 24 53.95 +20 28 28.0          18.79oVEK018T05
    CK19J06U  C2019 05 12.58718021 24 52.69 +20 28 39.6          19.17oVEK018T05
    CK19J06U  C2019 05 12.59235821 24 52.03 +20 28 44.6          17.96oVEK018T05
    CK19J06U  C2019 05 13.04665 21 24 00.88 +20 37 10.0          19.5 VVEK018033
    CK19J06U  C2019 05 13.04729 21 24 00.81 +20 37 10.4          19.9 VVEK018033
    CK19J06U  C2019 05 13.04792 21 24 00.75 +20 37 11.2          19.5 VVEK018033
    CK19J06U  C2019 05 13.07983 21 23 57.07 +20 37 47.6          19.9 VVEK018033
    CK19J06U  C2019 05 13.08041 21 23 57.00 +20 37 48.1          19.8 VVEK018033
    CK19J06U  C2019 05 13.08100 21 23 56.94 +20 37 48.5          19.5 VVEK018033
    CK19J06U  C2019 05 13.41868 21 23 18.21 +20 44 07.8          18.5 GVEK018I52
    CK19J06U  C2019 05 13.42453 21 23 17.51 +20 44 15.1          18.7 GVEK018I52
    CK19J06U  C2019 05 13.42699 21 23 17.19 +20 44 17.7          19.1 GVEK018I52
    CK19J06U  C2019 05 13.42944 21 23 16.93 +20 44 20.7          18.4 GVEK018I52
    CK19J06U KC2019 05 14.03265 21 22 06.12 +20 55 40.0          18.8 RqEK018A17
    CK19J06U KC2019 05 14.04441 21 22 04.67 +20 55 53.8          18.5 RqEK018A17
    CK19J06U KC2019 05 14.05617 21 22 03.31 +20 56 06.6          19.1 RqEK018A17
    CK19J06U KC2019 05 14.07932 21 22 00.48 +20 56 33.3          19.7 GVEK018204
    CK19J06U KC2019 05 14.08335 21 22 00.00 +20 56 37.7                VEK018204



M.P.E.C. 2019-K13                                Issued 2019 May 23, 17:50 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/2019 K1 (ATLAS)

     This object was reported as a comet candidate by the ATLAS program, but
no details seem to have been submitted.  H. Sato (Q62, May 18) reported that
the object was diffuse, with a strong central condensation and a 10" coma in
four stacked 60-s exposures.  W. Ryan (H01, May 22) described a definitive
fuzzy appearance, with a PSF twice that of field stars.  M. Micheli (Z84,
May 23) reported a possible ~10" to the NW.  G. Hug (H36, May 23) described a
wide vee-shaped ~20" tail in P.A. ~300.  Ryan (H01, May 23) noted a tail in
P.A. ~325.  Micheli (C65, May 23) reported a possible ~7" faint tail in P.A.
~330.

Observations:
    CK19K010* C2019 05 16.48248317 16 29.89 -24 33 15.3          17.18o EK013T08
    CK19K010  C2019 05 16.48903217 16 29.42 -24 33 20.3          17.60o EK013T08
    CK19K010  C2019 05 16.49184117 16 29.19 -24 33 22.5          17.46o EK013T08
    CK19K010  C2019 05 16.49694717 16 28.77 -24 33 25.7          17.43o EK013T08
    CK19K010  C2019 05 16.50265917 16 28.34 -24 33 28.7          17.52o EK013T08
    CK19K010  C2019 05 16.50659017 16 27.91 -24 33 29.8          17.63o EK013T08
    CK19K010  C2019 05 17.06982117 15 42.42 -24 39 33.0          18.0 VtEK013K91
    CK19K010  C2019 05 17.07105417 15 42.33 -24 39 33.8          18.2 VtEK013K91
    CK19K010  C2019 05 17.07229317 15 42.22 -24 39 34.6          18.0 VtEK013K91
    CK19K010  C2019 05 17.07352817 15 42.12 -24 39 35.5          18.5 VtEK013K91
    CK19K010  C2019 05 17.07476517 15 42.03 -24 39 36.2          18.2 VtEK013K91
    CK19K010 [C2019 05 17.50123 17 15 07.50 -24 44 11.7                VEK013Q62
    CK19K010 [C2019 05 17.50381 17 15 07.26 -24 44 13.1          17.9 GVEK013Q62
    CK19K010  C2019 05 18.15450 17 14 13.43 -24 51 16.1          17.5 RqEK013X74
    CK19K010  C2019 05 18.16308 17 14 12.69 -24 51 21.6          17.4 RqEK013X74
    CK19K010  C2019 05 18.17164 17 14 11.95 -24 51 27.2          17.5 RqEK013X74