[Iaude] MPEC F54: COMET C/2019 E3 (ATLAS)

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Thu Mar 21 15:21:17 EDT 2019


M.P.E.C. 2019-F54                                Issued 2019 Mar. 21, 19:12 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 C/2019 E3 (ATLAS)

     Initially reported as a new NEO candidate, D. Young (T08) subsequently
reported that the object appeared cometary in the discovery images, with a
15" FWHM (compared to 5" for nearby field stars) in four stacked 30s exposures.
P. Kilmartin (474, Mar. 6) described a circular ~10" moderately-condensed coma.
T. Lister (W86, Mar. 6) reported a ~10" coma.  M. Micheli (J04, Mar. 8)
described a coma with a 5" FWHM in 3" seeing.  H. Sato (Q62, Mar. 7) reported
a strongly-condensed 15" coma and no tail in ten stacked 60s exposures.

Observations:
    CK19E030* C2019 03 05.42678010 14 03.12 -37 05 03.2          18.45oVEF054T08
    CK19E030  C2019 03 05.43322810 14 03.07 -37 05 02.4          17.87oVEF054T08
    CK19E030  C2019 03 05.44151510 14 02.74 -37 05 01.0          18.86oVEF054T08
    CK19E030  C2019 03 05.45626010 14 02.39 -37 05 00.8          18.92oVEF054T08
    CK19E030  C2019 03 05.94833610 13 50.61 -37 04 51.3          20.1 GVEF054K92
    CK19E030  C2019 03 05.95003010 13 50.56 -37 04 51.2          20.1 GVEF054K92
    CK19E030  C2019 03 05.95173110 13 50.51 -37 04 51.1          20.0 GVEF054K92
    CK19E030  C2019 03 05.95342410 13 50.47 -37 04 51.0          20.1 GVEF054K92
    CK19E030 |C2019 03 06.03759 10 13 48.52 -37 04 48.7          19.7 VuEF054807
    CK19E030 |C2019 03 06.04316 10 13 48.36 -37 04 48.7          19.6 VuEF054807
    CK19E030 |C2019 03 06.04886 10 13 48.23 -37 04 48.5          20.1 VuEF054807
    CK19E030  C2019 03 06.23613410 13 43.71 -37 04 44.8          20.2 GVEF054W86
    CK19E030  C2019 03 06.23886610 13 43.64 -37 04 45.1          20.3 GVEF054W86
    CK19E030  C2019 03 06.24160410 13 43.55 -37 04 44.7          20.2 GVEF054W86
    CK19E030  C2019 03 06.24433810 13 43.49 -37 04 44.9          20.2 GVEF054W86
    CK19E030 KC2019 03 06.49969 10 13 37.39 -37 04 38.3          19.4 GVEF054474
    CK19E030 KC2019 03 06.50326 10 13 37.29 -37 04 38.3          19.6 GVEF054474
    CK19E030 KC2019 03 06.50682 10 13 37.22 -37 04 38.5          19.3 GVEF054474
    CK19E030 KC2019 03 06.51038 10 13 37.17 -37 04 37.5          19.9 GVEF054474
    CK19E030 KC2019 03 07.46348 10 13 14.37 -37 04 15.1          18.6 RUEF054Q62
    CK19E030 KC2019 03 07.46834 10 13 14.29 -37 04 14.2          18.5 RUEF054Q62
    CK19E030 KC2019 03 07.46928 10 13 14.27 -37 04 14.4          18.3 RUEF054Q62
    CK19E030 KC2019 03 07.47374 10 13 14.17 -37 04 14.2          18.5 RUEF054Q62
    CK19E030 1C2019 03 07.57721 10 13 11.68 -37 04 11.5                VEF054Q62
    CK19E030 1C2019 03 07.57991 10 13 11.57 -37 04 11.1                VEF054Q62
    CK19E030 1C2019 03 07.58260 10 13 11.49 -37 04 10.8          18.3 GVEF054Q62
    CK19E030  C2019 03 08.97417610 12 38.478-37 03 30.81         19.7 GVEF054J04
    CK19E030  C2019 03 08.97528010 12 38.491-37 03 30.61         19.8 GVEF054J04
    CK19E030  C2019 03 08.97638610 12 38.435-37 03 30.67         19.2 GVEF054J04
    CK19E030 |C2019 03 13.16077 10 11 00.20 -37 00 47.3          19.4 VuEF054807
    CK19E030 |C2019 03 13.16992 10 11 00.02 -37 00 46.7          19.7 VuEF054807
    CK19E030 |C2019 03 13.17876 10 10 59.78 -37 00 46.3          19.6 VuEF054807
    CK19E030 KC2019 03 13.25505 10 10 57.96 -37 00 42.7          19.1 VqEF054I47
    CK19E030 KC2019 03 13.27598 10 10 57.51 -37 00 41.6          19.0 VqEF054I47
    CK19E030  C2019 03 13.29916410 10 56.93 -37 00 40.5          18.7 RtEF054W87
    CK19E030  C2019 03 13.30155810 10 56.88 -37 00 40.4          18.5 RtEF054W87
    CK19E030  C2019 03 13.30394710 10 56.82 -37 00 40.3          18.7 RtEF054W87
    CK19E030  C2019 03 13.30633210 10 56.77 -37 00 40.2          18.9 RtEF054W87
    CK19E030 |C2019 03 16.05314 10 09 53.68 -36 58 20.9          19.8 VuEF054807
    CK19E030 |C2019 03 16.05869 10 09 53.52 -36 58 20.6          19.1 VuEF054807
    CK19E030 |C2019 03 21.06128 10 08 01.64 -36 53 08.4          19.5 VuEF054807
    CK19E030 |C2019 03 21.07043 10 08 01.43 -36 53 08.0          19.5 VuEF054807
    CK19E030 |C2019 03 21.07929 10 08 01.22 -36 53 07.6          19.8 VuEF054807
 
Observer details:
474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore,
    P. M. Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.
    0.61-m f/6.5 astrograph + CCD.
I47 Pierre Auger Observatory, Malargue.  Observer M. Masek.  0.3-m f/6.8
    reflector + CCD.
J04 ESA Optical Ground Station, Tenerife.  Observer D. Abreu.  Measurers
    M. Micheli, D. Koschny, A. Knoefel, M. Busch, E. Schwab.  1.0-m f/4.4
    reflector + CCD.
K92 Sutherland-LCO B.  Observers T. Lister, J. Chatelain, E. Gomez,
    S. Greenstreet.  Measurer T. Lister.  1.0-m f/8.0 Ritchey-Chretien + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observers C. Jacques, E. Pimentel,
    J. Barros, H. Sato.  Measurers C. Jacques, H. Sato.  0.43-m f/6.8
    reflector + CCD, 0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, A. Heinze,
    H. Weiland, H. Flewelling.  Measurers L. Denneau, J. Tonry, A. Heinze,
    H. Weiland, H. Flewelling, B. Stalder, A. Fitzsimmons, D. Young,
    N. Erasmus.  0.5-m reflector + CCD.
W86 Cerro Tololo-LCO B.  Observers T. Lister, J. Chatelain, E. Gomez,
    S. Greenstreet.  Measurer T. Lister.  1.-m f/8.0 Ritchey-Chretien + CCD.
W87 Cerro Tololo-LCO C.  Observers J. D. Armstrong, J. O. Teagarden.  1.0-m
    f/8 Ritchey-Chretien + CCD.
 
Orbital elements:
    C/2019 E3 (ATLAS)
Epoch 2023 Dec. 2.0 TT = JDT 2460280.5
T 2023 Nov. 16.82444 TT                                 MPCW
q  10.3513515            (2000.0)            P               Q
z  +0.0015810      Peri.  280.43575     +0.15392547     +0.96265621
 +/-0.0023053      Node   347.06216     +0.26162534     -0.25705971
e   0.9836343      Incl.   84.10651     -0.95281642     +0.08493134
>From 43 observations 2019 Mar. 5-21, mean residual 0".3.

    C/2019 E3 (ATLAS)
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5
T 2023 Nov. 12.72417 TT                                 MPCW
q  10.3556045            (2000.0)            P               Q
z  +0.0009530      Peri.  280.30766     +0.15153859     +0.96291065
 +/-0.0023053      Node   347.02949     +0.26147260     -0.25686009
e   0.9901310      Incl.   84.06598     -0.95324086     +0.08261946
>From 43 observations 2019 Mar. 5-21, mean residual 0".3.

Ephemeris:
    C/2019 E3 (ATLAS)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2019 02 19    10 19 52.0 -37 03 19  13.0086 13.6813   131.3     3.1  19.4
...
2019 03 06    10 13 49.4 -37 04 50  12.9092 13.6330   135.4     2.9  19.4
...
2019 03 14    10 10 40.8 -37 00 07  12.8779 13.6073   135.7     2.9  19.4
...
2019 03 20    10 08 25.0 -36 54 21  12.8644 13.5881   135.1     3.0  19.4
2019 03 21    10 08 03.0 -36 53 13  12.8629 13.5849   135.0     3.0  19.4
2019 03 22    10 07 41.1 -36 52 02  12.8617 13.5817   134.8     3.0  19.4
...
2019 03 28    10 05 34.6 -36 44 02  12.8592 13.5625   133.3     3.1  19.4
...
2019 04 05    10 02 59.3 -36 31 10  12.8683 13.5370   130.3     3.2  19.4
...
2019 04 20    09 58 59.2 -36 02 19  12.9203 13.4893   122.7     3.6  19.4

Gareth V. Williams           (C) Copyright 2019 MPC           M.P.E.C. 2019-F54



More information about the Iaude mailing list