[Iaude] MPEC E227: COMET C/2022 E2 (ATLAS)

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Tue Mar 15 16:30:26 EDT 2022


M.P.E.C. 2022-E227                               Issued 2022 March 15, 20:27 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/2022 E2 (ATLAS)                             

     N. Paul reports cometary activity of an asteroidal NEOCP candidate
(initially reported by ATLAS Chile on Mar. 7 UT) in follow-up images taken on 
Mar. 9 by iTelescope Observatory (H06), noting a condensed 9".63 coma. 
Prediscovery positions were reported from Feb. 2022. Additional reports
of cometary features are as follows:

OC   Date        Reporter           Coma    Tail    PA          Exposures

Q11  2022-03-09  H. Sato            7"                         14x60s
X02  2022-03-10  E. Guido           7"                         25x120s
W88  2022-03-10  N. Paul            5".1
Q62  2022-03-10  H. Sato            6"                          6x120s

Observations:
    CK22E020  C2022 02 23.24494510 34 26.48 -32 31 49.8          18.95oVEE227W68
    CK22E020  C2022 02 23.24993310 34 26.29 -32 31 48.0          18.76oVEE227W68
    CK22E020  C2022 02 23.26160510 34 25.88 -32 31 46.0          18.57oVEE227W68
    CK22E020  C2022 02 23.26430810 34 25.77 -32 31 45.2          18.49oVEE227W68
    CK22E020* C2022 03 07.11970310 26 12.49 -31 40 11.6          18.76cVEE227W68
    CK22E020  C2022 03 07.12311110 26 12.32 -31 40 11.5          19.00cVEE227W68
    CK22E020  C2022 03 07.12829610 26 12.13 -31 40 09.1          19.10cVEE227W68
    CK22E020  C2022 03 07.16571110 26 10.55 -31 39 57.4          18.52cVEE227W68
    CK22E020 mC2022 03 07.28544910 26 05.65 -31 39 23.6                VEE227I52
    CK22E020 KC2022 03 07.28578 10 26 05.53 -31 39 22.2          18.3 GVEE227W95
    CK22E020 KC2022 03 07.29100 10 26 05.30 -31 39 20.4          18.5 GVEE227W95
    CK22E020 mC2022 03 07.29408210 26 05.24 -31 39 20.3          18.22GVEE227I52
    CK22E020 KC2022 03 07.29621 10 26 05.07 -31 39 18.8          18.6 GVEE227W95
    CK22E020 mC2022 03 07.30219610 26 04.87 -31 39 18.2          18.64GVEE227I52
    CK22E020 mC2022 03 07.31150110 26 04.49 -31 39 15.1          18.77GVEE227I52
    CK22E020 KC2022 03 07.50549 10 25 56.51 -31 38 15.4          18.6 RqEE227E94
    CK22E020 KC2022 03 07.52581 10 25 55.66 -31 38 09.3          18.7 RqEE227E94
    CK22E020 KC2022 03 07.53598 10 25 55.23 -31 38 06.2          18.6 RqEE227E94
    CK22E020  C2022 03 08.01803810 25 35.37 -31 35 39.3          18.9 GVEE227W86
    CK22E020  C2022 03 08.01973710 25 35.30 -31 35 38.7          18.8 GVEE227W86
    CK22E020  C2022 03 08.02143210 25 35.23 -31 35 38.3          18.8 GVEE227W86
    CK22E020  C2022 03 08.02312710 25 35.16 -31 35 37.8          18.9 GVEE227W86
    CK22E020 KC2022 03 08.04363510 25 34.27 -31 35 31.8          19.4 GXEE227Y00
    CK22E020 KC2022 03 08.05017910 25 34.03 -31 35 29.7          19.2 GXEE227Y00
    CK22E020 KC2022 03 08.05652910 25 33.77 -31 35 27.7          18.6 GXEE227Y00
    CK22E020 1C2022 03 08.20961 10 25 27.42 -31 34 40.4          18.2 GVEE227W88
    CK22E020 1C2022 03 08.23481 10 25 26.30 -31 34 32.8          18.1 GVEE227W88
    CK22E020 LC2022 03 09.22926 10 24 45.41 -31 29 25.0          18.6 GVEE227H06
    CK22E020 LC2022 03 09.23138 10 24 45.32 -31 29 24.5          18.5 GVEE227H06
    CK22E020 KC2022 03 09.35694 10 24 40.19 -31 28 43.7          19.2 RqEE227E94
    CK22E020 KC2022 03 09.38570 10 24 38.99 -31 28 35.2          19.3 RqEE227E94
    CK22E020 KC2022 03 09.41451 10 24 37.77 -31 28 25.3          19.4 RqEE227E94
    CK22E020 KC2022 03 09.44329 10 24 36.57 -31 28 16.2          19.2 RqEE227E94
    CK22E020 KC2022 03 09.62658 10 24 29.03 -31 27 20.2          18.0 RqEE227Q11
    CK22E020 KC2022 03 09.63633 10 24 28.62 -31 27 17.3                qEE227Q11
    CK22E020 KC2022 03 09.93059010 24 16.59 -31 25 43.9          18.5 GVEE227587
    CK22E020 KC2022 03 09.93166710 24 16.55 -31 25 43.2          18.7 GVEE227587
    CK22E020 %C2022 03 10.11735 10 24 08.95 -31 24 42.8          18.5 GVEE227W88
    CK22E020 %C2022 03 10.12576 10 24 08.61 -31 24 40.0          18.4 GVEE227W88
    CK22E020 1C2022 03 10.19508 10 24 05.75 -31 24 17.9          18.0 GVEE227W88
    CK22E020 1C2022 03 10.22999 10 24 04.28 -31 24 06.8          18.1 GVEE227W88
    CK22E020 KC2022 03 10.31890 10 24 00.64 -31 23 37.5          18.2 GVEE227X02
    CK22E020 KC2022 03 10.33639 10 23 59.89 -31 23 32.3          18.0 GVEE227X02
    CK22E020 KC2022 03 10.35438 10 23 59.14 -31 23 26.4          18.9 GVEE227X02
    CK22E020 1C2022 03 10.42348 10 23 56.45 -31 23 04.6                VEE227Q62
    CK22E020 1C2022 03 10.42682 10 23 56.31 -31 23 03.6                VEE227Q62
    CK22E020 1C2022 03 10.43016 10 23 56.16 -31 23 02.5          18.6 GVEE227Q62
    CK22E020 KC2022 03 11.34465 10 23 18.85 -31 18 05.8          18.3 RqEE227E94
    CK22E020 KC2022 03 11.36579 10 23 17.95 -31 17 58.7          18.3 RqEE227E94
    CK22E020 KC2022 03 11.38595 10 23 17.09 -31 17 52.4          18.2 RqEE227E94
    CK22E020 KC2022 03 12.03105 10 22 50.85 -31 14 20.1          18.7 VqEE227I47
    CK22E020 KC2022 03 12.04016 10 22 50.47 -31 14 16.9          18.5 VqEE227I47
    CK22E020 KC2022 03 12.04430 10 22 50.38 -31 14 16.5          18.6 VqEE227I47
    CK22E020 3C2022 03 12.26881 10 22 41.06 -31 13 01.8          18.3 GVEE227W88
    CK22E020 3C2022 03 12.29228 10 22 40.14 -31 12 53.8          18.3 GVEE227W88
    CK22E020 dC2022 03 13.52715 10 21 50.17 -31 05 59.2          18.9 GVEE227Q62
    CK22E020 {C2022 03 13.52992 10 21 50.04 -31 05 58.2          18.6 GVEE227Q62
    CK22E020 dC2022 03 13.53108 10 21 50.02 -31 05 58.0          18.8 GVEE227Q62
    CK22E020 dC2022 03 13.53499 10 21 49.85 -31 05 56.4          18.8 GVEE227Q62
    CK22E020 {C2022 03 13.53802 10 21 49.71 -31 05 55.2          18.6 GVEE227Q62
    CK22E020 dC2022 03 13.53883 10 21 49.69 -31 05 55.2          18.9 GVEE227Q62
    CK22E020 dC2022 03 14.55407 10 21 08.83 -31 00 07.1          18.8 GVEE227Q62
    CK22E020 dC2022 03 14.56230 10 21 08.47 -31 00 04.4          18.8 GVEE227Q62
    CK22E020 dC2022 03 14.57062 10 21 08.15 -31 00 01.4          18.7 GVEE227Q62

Observer details:
587 Sormano.  Observers E. Valli, G. Ventre.  Measurer P. Sicoli.  0.5-m f/6.8
    reflector + CCD.
E94 Possum Observatory, Gisborne.  Observer J. Drummond.  0.41-m f/4.5
    Newtonian reflector + CCD.
H06 iTelescope Observatory, Mayhill.  Observer N. Paul.
I47 Pierre Auger Observatory, Malargue.  Observer M. Masek.  0.3-m f/6.8
    reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer G. J. Leonard.
    Measurers E. J. Christensen, G. A. Farneth, J. B. Fazekas, D. C. Fuls, A.
    R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J.
    Leonard, D. Rankin, R. L. Seaman, A. Serrano, F. C. Shelly, K. W.
    Wierzchos.
Q11 Shinshiro.  Observer T. Ikemura.  Measurer H. Sato.  0.38-m f/4.2
    reflector + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observers H. Sato, F. D. Romanov,
    N. Paul.  0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer, 0.43-m
    f/6.8 reflector + CCD.
W68 ATLAS Chile, Rio Hurtado.  Observers L. Denneau, R. Siverd, J. Tonry, H.
    Weiland.  Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
    J. Robinson, R. Siverd, J. Tonry, H. Weiland.  0.5-m reflector + CCD.
W86 Cerro Tololo-LCO B.  Observer J. D. Armstrong.  1.0-m f/8 Ritchey-Chretien
    + CCD.
W88 Slooh.com Chile Observatory, La Dehesa.  Observers A. J. Evans, N. Paul,
    B. Lutkenhoner.  0.43-m f/6.8 Corrected Dall-Kirkham + CCD.
W95 Observatorio Panameno, San Pedro de Atacama.  Observers A. Maury, G.
    Attard, J. Fabrega.  Measurers A. Maury, G. Attard, D. Parrott.  0.40-m
    f/3.8 reflector + CCD.
X02 Telescope Live, El Sauce.  Observers E. Guido, M. Rocchetto, E. Bryssinck,
    G. Milani, G. Savini, A. Valvasori.  Measurer E. Guido.  0.61-m f/6.5
    astrograph + CCD.
Y00 SONEAR Observatory, Oliveira.  Observer C. Jacques.  0.45-m f/2.9
    reflector + CCD.

Orbital elements:
    C/2022 E2 (ATLAS)                                                           
Epoch 2024 Sept. 7.0 TT = JDT 2460560.5                                         
T 2024 Sept. 16.95426 TT                                Rudenko                 
q   3.6690467            (2000.0)            P               Q                  
z  +0.0010681      Peri.   41.83959     -0.03259931     +0.83139795             
 +/-0.0011038      Node   125.37102     +0.63652693     -0.41063285             
e   0.9960810      Incl.  137.13390     +0.77056522     +0.37437696             
>From 64 observations 2022 Feb. 23-Mar. 14, mean residual 0".3.                  
                                                                                
    C/2022 E2 (ATLAS)                                                           
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                                         
T 2024 Sept. 16.55926 TT                                Rudenko                 
q   3.6684964            (2000.0)            P               Q                  
z  +0.0009412      Peri.   41.78518     -0.03272198     +0.83136945             
 +/-0.0011038      Node   125.33623     +0.63708300     -0.41032581             
e   0.9965473      Incl.  137.15340     +0.77010034     +0.37477668             
>From 64 observations 2022 Feb. 23-Mar. 14, mean residual 0".3.                  
                                                                                
Ephemeris:
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2022 02 13    10 41 22.7 -33 03 11   7.7540  8.4407   131.5     5.0  18.7
...
2022 02 28    10 31 08.8 -32 13 05   7.5683  8.3465   139.5     4.4  18.6
...
2022 03 08    10 25 36.1 -31 35 45   7.4950  8.2961   141.6     4.3  18.6
...
2022 03 14    10 21 31.1 -31 03 18   7.4526  8.2584   142.0     4.3  18.5
2022 03 15    10 20 51.0 -30 57 33   7.4465  8.2521   141.9     4.3  18.5
2022 03 16    10 20 11.0 -30 51 42   7.4408  8.2458   141.9     4.3  18.5
...
2022 03 22    10 16 17.2 -30 14 47   7.4126  8.2080   140.7     4.4  18.5
...
2022 03 30    10 11 24.2 -29 21 13   7.3914  8.1576   137.7     4.7  18.5
...
2022 04 14    10 03 33.0 -27 31 28   7.3993  8.0631   128.6     5.6  18.4

M. P. C. Staff               (C) Copyright 2022 MPC           M.P.E.C. 2022-E227




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