[Iaude] MPEC J22: COMET C/2020 H5 (Robinson)

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat May 2 21:12:22 EDT 2020


M.P.E.C. 2020-J22                                   Issued 2020 May 3, 00:48 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/2020 H5 (Robinson)                           

     This object was reported on Apr. 22 UT by J. Robinson of ATLAS (T05)
cometary, noting a 14" coma. Additional reports of cometary features are
as follows:

OC   Date        Reporter           Coma    Tail    PA          Exposures
Q62  2020-04-24  H. Sato             12"                         8x60s
323  2020-04-26  P. Camilleri        10"                         5x120s

Observations:
    CK20H050* C2020 04 22.33059410 59 10.31 -44 18 49.8          19.18cVEJ022T05
    CK20H050  C2020 04 22.33381210 59 10.23 -44 18 48.9          19.20cVEJ022T05
    CK20H050  C2020 04 22.33934710 59 10.14 -44 18 46.2          18.99cVEJ022T05
    CK20H050  C2020 04 22.34993410 59 10.13 -44 18 43.8          19.25cVEJ022T05
    CK20H050 KC2020 04 24.33924 10 58 55.00 -44 05 56.3          18.6 VqEJ022E94
    CK20H050 KC2020 04 24.34938 10 58 54.92 -44 05 52.9          18.6 VqEJ022E94
    CK20H050 KC2020 04 24.35951 10 58 54.86 -44 05 49.5          18.6 VqEJ022E94
    CK20H050 KC2020 04 24.36965 10 58 54.83 -44 05 46.2          18.6 VqEJ022E94
    CK20H050 1C2020 04 24.64998 10 58 52.76 -44 03 56.8                VEJ022Q62
    CK20H050 1C2020 04 24.65337 10 58 52.72 -44 03 55.5          18.6 GVEJ022Q62
    CK20H050 KC2020 04 24.93430 10 58 51.02 -44 02 07.3          20.3 VUEJ022X31
    CK20H050 KC2020 04 24.97283 10 58 50.72 -44 01 52.6          18.7 VUEJ022X31
    CK20H050 KC2020 04 25.41386 10 58 47.67 -43 59 01.1          19.0 VqEJ022E94
    CK20H050 KC2020 04 25.43242 10 58 47.60 -43 58 53.8          18.9 VqEJ022E94
    CK20H050 KC2020 04 25.45049 10 58 47.48 -43 58 47.3          18.9 VqEJ022E94
    CK20H050 KC2020 04 25.52774 10 58 46.87 -43 58 17.3          19.7 VqEJ022E23
    CK20H050 KC2020 04 25.54163 10 58 46.75 -43 58 11.7          19.9 VqEJ022E23
    CK20H050 KC2020 04 25.55552 10 58 46.69 -43 58 06.9          19.9 VqEJ022E23
    CK20H050 KC2020 04 26.54761 10 58 40.60 -43 51 41.5          18.8 VqEJ022323
    CK20H050 KC2020 04 26.57591 10 58 40.46 -43 51 30.0          18.9 VqEJ022323
    CK20H050 KC2020 04 28.37517 10 58 30.52 -43 39 47.2          19.0 VqEJ022E94
    CK20H050 KC2020 04 28.38445 10 58 30.38 -43 39 42.9          18.9 VqEJ022E94
    CK20H050 KC2020 04 28.39368 10 58 30.23 -43 39 39.7          18.8 VqEJ022E94
    CK20H050  C2020 04 28.39839510 58 30.35 -43 39 38.5          17.7 GVEJ022474
    CK20H050  C2020 04 28.40070010 58 30.34 -43 39 37.4          17.8 GVEJ022474
    CK20H050  C2020 04 28.40269010 58 30.34 -43 39 36.7                VEJ022474
    CK20H050  C2020 04 28.40467910 58 30.32 -43 39 35.8          18.5 GVEJ022474
    CK20H050 KC2020 04 28.42222 10 58 30.20 -43 39 29.1          18.8 VqEJ022E94
    CK20H050 KC2020 04 28.43216 10 58 30.14 -43 39 25.4          18.8 VqEJ022E94
    CK20H050 KC2020 04 28.45992 10 58 30.03 -43 39 13.3          18.8 VqEJ022E94
    CK20H050 KC2020 04 28.55781 10 58 29.58 -43 38 34.9          18.7 VqEJ022323
    CK20H050 KC2020 04 28.58288 10 58 29.44 -43 38 25.7          18.8 VqEJ022323
    CK20H050 KC2020 04 29.56695 10 58 24.85 -43 31 59.9          18.9 VqEJ022323
    CK20H050 KC2020 04 29.59423 10 58 24.67 -43 31 48.1          18.9 VqEJ022323
    CK20H050 3C2020 04 29.98041 10 58 23.15 -43 29 16.5          19.2 GVEJ022W88
    CK20H050 3C2020 04 29.99144 10 58 23.10 -43 29 11.8          19.0 GVEJ022W88
    CK20H050 KC2020 04 30.12830 10 58 22.34 -43 28 17.9          18.6 VUEJ022X31
    CK20H050 (C2020 04 30.13331 10 58 22.34 -43 28 17.2          18.4 GVEJ022W88
    CK20H050 KC2020 04 30.13667 10 58 22.36 -43 28 15.2          18.7 VUEJ022X31
    CK20H050 (C2020 04 30.14534 10 58 22.29 -43 28 12.3          18.3 GVEJ022W88
    CK20H050 4C2020 05 02.21934 10 58 14.67 -43 14 32.8          19.2 VqEJ022W88
    CK20H050 4C2020 05 02.23319 10 58 14.65 -43 14 27.4          19.2 VqEJ022W88
    CK20H050 4C2020 05 02.24670 10 58 14.58 -43 14 22.0          19.1 VqEJ022W88
    CK20H050 KC2020 05 02.48204 10 58 13.90 -43 12 49.0          18.7 VqEJ022E23
    CK20H050 KC2020 05 02.49593 10 58 13.86 -43 12 43.2          19.1 VqEJ022E23
    CK20H050 KC2020 05 02.50981 10 58 13.84 -43 12 38.5          19.4 VqEJ022E23

Observer details:
323 Perth Observatory, Bickley.  Observers P. Camilleri, J. Oey, R. Groom.  
    Measurer P. Camilleri.  0.34-m f/5 reflector + CCD.
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.
E23 Arcadia.  Observer A. Hidas.  0.35-m f/1.9 reflector + CCD.
E94 Possum Observatory, Gisborne.  Observer J. Drummond.  0.35-m f/10 
   Schmidt-Cassegrain + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observer H. Sato.  0.51-m f/6.8 
   astrograph + CCD + f/4.5 focal reducer.
T05 ATLAS-HKO, Haleakala.  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, J. Robinson, N. Erasmus. 
    0.5-m reflector + CCD.
W88 Slooh.com Chile Observatory, La Dehesa.  Observers B. Lutkenhoner, J. Maes, 
   G. Gasparovic, Y. Chen.  Measurers B. Lutkenhoner, J. Maes, G. Gasparovic, 
   Y. Chen, G. Y. Gasparovic.  0.43-m f/6.8 Corrected Dall-Kirkham + CCD.
X31 Galileo Galilei Observatory, Oro Verde.  Observer C. Fornari.  0.40-m f/8 
   Ritchey-Chretien + CCD.

Orbital elements:
    C/2020 H5 (Robinson)                                                        
T 2020 June 15.78983 TT                                 Rudenko                 
q   9.3972695            (2000.0)            P               Q                  
z  +0.0064250      Peri.  317.59885     -0.75229814     -0.44843441             
                   Node   210.91667     +0.08584110     -0.79307279             
e   0.9396227      Incl.   69.95039     -0.65320657     +0.41224039             
>From 46 observations 2020 Apr. 22-May 2.                                        
                                                                                
Ephemeris:
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2020 04 03    11 03 10.1 -46 13 22   8.6947  9.4058   133.1     4.5  19.4
...
2020 04 18    10 59 49.7 -44 46 04   8.7125  9.4027   131.1     4.6  19.4
...
2020 04 26    10 58 44.0 -43 55 14   8.7425  9.4013   128.5     4.8  19.4
...
2020 05 02    10 58 15.5 -43 16 00   8.7738  9.4004   125.9     5.0  19.4
2020 05 03    10 58 12.5 -43 09 24   8.7797  9.4003   125.4     5.0  19.4
2020 05 04    10 58 10.0 -43 02 48   8.7858  9.4002   125.0     5.0  19.5
...
2020 05 10    10 58 06.0 -42 23 04   8.8266  9.3994   121.9     5.2  19.5
...
2020 05 18    10 58 29.1 -41 30 18   8.8911  9.3986   117.3     5.5  19.5
...
2020 06 02    11 00 38.3 -39 54 55   9.0389  9.3976   107.7     5.9  19.5

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-J22




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