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  • MPEC 2020-S119 : COMET C/2020 S3 (Erasmus)

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    M.P.E.C. 2020-S119                           Issued 2020 September 20, 22:24 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/2020 S3 (Erasmus)                        
    
         N. Erasmus reports his discovery of a comet on four 30 second exposures
    taken on Sep 17 UT by ATLAS-MLO (T08), noting a 13" coma.  Additional reports
    of cometary features are as follows:
    
    OC   Date        Reporter           Coma    Tail    PA          Exposures
    Q62  2020-09-17  K. Yoshimoto       18"                           8x60s
    H06  2020-09-18  K. Yoshimoto       15"      10"    300           7x60s
    H06  2020-09-18  M. Mattiazzo       15"
    Q62  2020-09-18  H. Sato            15"      20"    280          14x60s
    L07  2020-09-19  E. Guido           15"                          151x30s
    A71  2020-09-19  M. Jaeger          80"
    L07  2020-09-20  E. Guido           20"                          157x30s
    H06  2020-09-20  N. Paul            15"      13".5  171           10x60s
    
    Observations:
        CK20S030* C2020 09 17.61161507 42 11.09 +09 05 20.9          18.48oVES119T08
        CK20S030  C2020 09 17.62149207 42 12.51 +09 05 13.0          17.61oVES119T08
        CK20S030  C2020 09 17.63209707 42 14.05 +09 05 06.2          18.09oVES119T08
        CK20S030  C2020 09 17.63578107 42 14.61 +09 05 03.3          18.27oVES119T08
        CK20S030 aC2020 09 17.79004 07 42 37.48 +09 03 14.8                VES119Q62
        CK20S030 aC2020 09 17.79371 07 42 38.05 +09 03 10.4          17.4 RVES119Q62
        CK20S030 pC2020 09 18.46718 07 44 18.47 +08 54 49.7                qES119H06
        CK20S030 WC2020 09 18.46838 07 44 18.66 +08 54 50.9          18.0 GVES119H06
        CK20S030 pC2020 09 18.47045 07 44 18.99 +08 54 48.5          17.2 RqES119H06
        CK20S030 WC2020 09 18.47172 07 44 19.27 +08 54 47.6          17.3 GVES119H06
        CK20S030 WC2020 09 18.47458 07 44 19.62 +08 54 44.9          17.5 GVES119H06
        CK20S030 |C2020 09 18.47528 07 44 19.66 +08 54 44.3                 ES119H06
        CK20S030 |C2020 09 18.48075 07 44 20.46 +08 54 40.8          17.6 G ES119H06
        CK20S030 KC2020 09 19.09299 07 45 52.65 +08 47 00.6          18.5 GVES119L07
        CK20S030 KC2020 09 19.10369 07 45 54.20 +08 46 52.7          18.2 VVES119L04
        CK20S030 KC2020 09 19.10997 07 45 55.06 +08 46 47.6          18.1 VtES119A71
        CK20S030  C2020 09 19.11439207 45 55.91 +08 46 43.7          18.2 GVES119L01
        CK20S030 KC2020 09 19.11501 07 45 55.87 +08 46 44.6          18.2 VtES119A71
        CK20S030  C2020 09 19.11568407 45 56.11 +08 46 42.4          18.3 GVES119L01
        CK20S030  C2020 09 19.11698807 45 56.28 +08 46 41.6          18.0 GVES119L01
        CK20S030 KC2020 09 19.11807 07 45 56.42 +08 46 41.7          18.7 GVES119L07
        CK20S030  C2020 09 19.11914607 45 56.61 +08 46 41.0          18.3 GVES119L01
        CK20S030 KC2020 09 19.12118 07 45 56.79 +08 46 38.7          18.4 VtES119A71
        CK20S030  C2020 09 19.12131507 45 56.93 +08 46 39.7          18.2 GVES119L01
        CK20S030  C2020 09 19.12174207 45 56.95 +08 46 39.0          18.2 GVES119L01
        CK20S030 KC2020 09 19.12218 07 45 57.06 +08 46 38.4          18.4 VVES119L04
        CK20S030 KC2020 09 19.12678 07 45 57.69 +08 46 34.6          18.4 VtES119A71
        CK20S030 KC2020 09 19.13202 07 45 58.55 +08 46 31.2          18.0 GVES119K88
        CK20S030 KC2020 09 19.13239 07 45 58.50 +08 46 31.1          18.7 VtES119A71
        CK20S030 KC2020 09 19.13379 07 45 58.76 +08 46 29.0          18.3 GVES119K88
        CK20S030 KC2020 09 19.14326 07 46 00.21 +08 46 22.7          18.6 GVES119L07
        CK20S030 KC2020 09 19.15977 07 46 02.76 +08 46 09.8          18.5 GVES119970
        CK20S030 KC2020 09 19.16438 07 46 03.43 +08 46 04.3          18.7 GVES119970
        CK20S030 KC2020 09 19.16898 07 46 04.09 +08 46 02.3          18.0 GVES119970
        CK20S030 KC2020 09 19.17663 07 46 05.18 +08 45 55.7          18.0 GVES119970
        CK20S030 9C2020 09 19.21363 07 46 10.93 +08 45 29.7          18.6 GVES119G40
        CK20S030 9C2020 09 19.22412 07 46 12.46 +08 45 21.4          18.8 GVES119G40
        CK20S030 4C2020 09 19.23168 07 46 13.62 +08 45 16.5          18.9 GVES119J04
        CK20S030 4C2020 09 19.23276 07 46 13.77 +08 45 15.6          18.8 GVES119J04
        CK20S030 4C2020 09 19.23384 07 46 13.94 +08 45 15.0          18.8 GVES119J04
        CK20S030 9C2020 09 19.23796 07 46 14.53 +08 45 12.2          18.5 GVES119G40
        CK20S030 KC2020 09 20.09111 07 48 24.38 +08 34 15.3          18.6 GVES119L07
        CK20S030 KC2020 09 20.11694 07 48 28.32 +08 33 55.4          18.6 GVES119L07
        CK20S030 KC2020 09 20.14298 07 48 32.29 +08 33 35.2          18.5 GVES119L07
        CK20S030 3C2020 09 20.37071 07 49 07.22 +08 30 42.1          19.5 GVES119W88
        CK20S030 3C2020 09 20.37647 07 49 08.08 +08 30 37.8          19.7 GVES119W88
        CK20S030 LC2020 09 20.44978 07 49 19.40 +08 29 35.6          17.5 GVES119H06
        CK20S030 LC2020 09 20.45352 07 49 19.91 +08 29 32.9          17.7 GVES119H06
        CK20S030 KC2020 09 20.48749 07 49 25.17 +08 29 05.7          18.3 GVES119V01
        CK20S030 KC2020 09 20.49565 07 49 26.42 +08 28 59.5          18.4 GVES119V01
    
    Observer details:
    970 Chelmsford.  Observer N. James.  0.28-m f/10.0 Schmidt-Cassegrain + CCD.
    A71 Stixendorf.  Observers M. Jaeger, E. Prosperi, S. Prosperi.  Measurer M.
        Jaeger.  0.28-m f/2.2 reflector + CCD.
    G40 Slooh.com Canary Islands Observatory.  Observer B. Lutkenhoner.  0.43-m
        f/6.8 Corrected Dall-Kirkham + CCD.
    H06 iTelescope Observatory, Mayhill.  Observers K. Yoshimoto, M. Mattiazzo, H.
        Sato, N. Paul.  0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer, 0.43-m
        f/6.8 reflector + CCD, 0.25-m f/3.4 astrograph + CCD.
    J04 ESA Optical Ground Station, Tenerife.  Observer E. Kuusela.  Measurers A.
        Knofel, D. Koschny, M. Busch, M. Micheli, E. Schwab.  1.0-m f/4.4
        reflector + CCD.
    K88 GINOP-KHK, Piszkesteto.  Observer K. Sarneczky.  0.60-m Schmidt + CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    L04 ROASTERR-1 Observatory, Cluj-Napoca.  Observer L. Hudin.  0.3-m f/5
        reflector + CCD.
    L07 Osservatorio Salvatore di Giacomo, Agerola.  Observers E. Guido, A.
        Noschese.  0.5-m f/8 Ritchey-Chretien + CCD.
    Q62 iTelescope Observatory, Siding Spring.  Observer K. Yoshimoto.  0.50-m
        f/6.8 reflector + CCD + f/4.5 focal reducer.
    T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, A. Heinze, H.
        Weiland.  Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, H.
        Flewelling, A. Fitzsimmons, J. Robinson, N. Erasmus.  0.5-m reflector +
        CCD.
    V01 Mountainville Observatory, Alpine.  Observer B. Sheets.  0.35-m f/11.0
        Schmidt-Cassegrain + CCD.
    W88 Slooh.com Chile Observatory, La Dehesa.  Observer B. Lutkenhoner.  0.43-m
        f/6.8 Corrected Dall-Kirkham + CCD.
    
    Orbital elements:
        C/2020 S3 (Erasmus)                                                         
    T 2020 Dec. 13.23896 TT                                 Rudenko                 
    q   0.4108352            (2000.0)            P               Q                  
                       Peri.  349.09747     -0.84054196     +0.49026040             
                       Node   222.89156     -0.46807541     -0.87144099             
    e   1.0            Incl.   19.79630     -0.27275377     -0.01534109             
    From 50 observations 2020 Sept. 17-20.                                          
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2020 08 21    06 43 10.5 +13 00 33   2.7949  2.2515    48.2    19.6  18.6
    ...
    2020 09 05    07 13 13.0 +11 14 54   2.4281  2.0272    55.1    24.1  17.9
    ...
    2020 09 13    07 31 06.3 +09 57 55   2.2305  1.9037    58.2    26.7  17.5
    ...
    2020 09 19    07 45 38.3 +08 48 14   2.0831  1.8091    60.3    28.8  17.2
    2020 09 20    07 48 10.1 +08 35 29   2.0586  1.7932    60.6    29.2  17.1
    2020 09 21    07 50 44.0 +08 22 24   2.0342  1.7772    60.9    29.6  17.0
    ...
    2020 09 27    08 06 53.6 +06 56 00   1.8894  1.6803    62.5    31.9  16.7
    ...
    2020 10 05    08 30 55.7 +04 36 46   1.7018  1.5480    63.9    35.4  16.2
    ...
    2020 10 20    09 27 02.4 -01 20 24   1.3815  1.2898    63.3    43.6  15.1
    
    M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-S119
    


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