[Iaude] MPEC P29: COMET C/2020 P1 (NEOWISE)

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Aug 8 15:24:56 EDT 2020


M.P.E.C. 2020-P29                                Issued 2020 August 8, 18:44 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 P1 (NEOWISE)                            

     This object was reported on Aug. 4 UT by J. Chesley as a possible comet
seen in exposures taken on Aug. 2 and 3 by NEOWISE (C51), noting that the source
displayed a PSF twice what was normal.  Reports of cometary features are as
follows:

OC   Date        Reporter           Coma    Tail    PA          Exposures

Q62  2020-08-04  M. Mattiazzo         5"     20"    120           5x60s
Y00  2020-08-04  C. Jacques          18"     12"    135           3x120s
W88  2020-08-05  N. Paul             13"     24"    116           4x100s
W88  2020-08-05  G. Gasparovic               20"    110           8x50s
Q62  2020-08-05  H. Sato             15"     40"    113           12x60s
Q62  2020-08-05  E. Guido            15"     30"    125           24x45s
G39  2020-08-07  E. Bryssinck        10"     14"    116           15x60s
W88  2020-08-07  M. Suzuki           14"     30"    125           4x50s
W88  2020-08-08  N. Paul              8"     13"    119           3x100s

Observations:
    CK20P010* S2020 08 02.62538 12 49 52.54 -76 32 45.3          19   RLEP029C51
    CK20P010  s2020 08 02.62538 1 +  601.7013 -  890.9201 - 6776.1583   EP029C51
    CK20P010  S2020 08 02.62551 12 49 52.32 -76 32 44.4                LEP029C51
    CK20P010  s2020 08 02.62551 1 +  573.5758 -  969.4027 - 6767.8299   EP029C51
    CK20P010  S2020 08 02.82161 12 49 14.40 -76 26 42.1                LEP029C51
    CK20P010  s2020 08 02.82161 1 +  595.0888 -  916.0113 - 6773.4106   EP029C51
    CK20P010  S2020 08 02.88706 12 49 02.09 -76 24 39.7                LEP029C51
    CK20P010  s2020 08 02.88706 1 +  583.6657 -  950.5657 - 6769.6500   EP029C51
    CK20P010  S2020 08 02.95238 12 48 49.27 -76 22 42.0                LEP029C51
    CK20P010  s2020 08 02.95238 1 +  599.9881 -  906.5707 - 6774.2558   EP029C51
    CK20P010  S2020 08 03.01784 12 48 37.09 -76 20 40.8                LEP029C51
    CK20P010  s2020 08 03.01784 1 +  588.6357 -  941.1594 - 6770.5398   EP029C51
    CK20P010  S2020 08 03.14861 12 48 12.31 -76 16 40.1                LEP029C51
    CK20P010  s2020 08 03.14861 1 +  593.5725 -  931.7143 - 6771.4225   EP029C51
    CK20P010  S2020 08 03.27939 12 47 48.55 -76 12 38.4                LEP029C51
    CK20P010  s2020 08 03.27939 1 +  598.4565 -  922.2862 - 6772.2908   EP029C51
    CK20P010  S2020 08 03.34484 12 47 36.56 -76 10 38.0                LEP029C51
    CK20P010  s2020 08 03.34484 1 +  587.3167 -  956.9138 - 6768.4673   EP029C51
    CK20P010 ;C2020 08 04.45042 12 44 26.40 -75 36 34.9          15.7 RVEP029Q62
    CK20P010 ;C2020 08 04.45390 12 44 25.52 -75 36 27.1          16.3 RVEP029Q62
    CK20P010 ;C2020 08 04.45745 12 44 25.44 -75 36 21.6          15.5 RVEP029Q62
    CK20P010 ;C2020 08 04.46097 12 44 24.56 -75 36 15.0          15.8 RVEP029Q62
    CK20P010  C2020 08 04.97765 12 43 04.73 -75 20 20.2          16.4 RqEP029Y00
    CK20P010  C2020 08 04.98179 12 43 03.70 -75 20 10.8          16.3 RqEP029Y00
    CK20P010  C2020 08 04.98320 12 43 03.72 -75 20 08.7          16.5 RqEP029Y00
    CK20P010  C2020 08 04.98503 12 43 03.55 -75 20 06.2          16.4 RqEP029Y00
    CK20P010  C2020 08 04.99066 12 43 02.63 -75 19 54.1          16.2 RqEP029Y00
    CK20P010 %C2020 08 05.00031 12 43 00.87 -75 19 37.6          17.0 GVEP029W88
    CK20P010 %C2020 08 05.00319 12 43 00.41 -75 19 31.9          16.4 GVEP029W88
    CK20P010 %C2020 08 05.00858 12 42 59.70 -75 19 21.6          16.6 GVEP029W88
    CK20P010 %C2020 08 05.01090 12 42 59.40 -75 19 17.7          16.5 GVEP029W88
    CK20P010 4C2020 08 05.14400 12 42 39.32 -75 15 06.5          17.0 RqEP029W88
    CK20P010 4C2020 08 05.14911 12 42 38.50 -75 14 56.9          17.0 VqEP029W88
    CK20P010 KC2020 08 05.35309412 42 08.687-75 08 43.63         17.7 GVEP029Q63
    CK20P010 KC2020 08 05.35611112 42 08.224-75 08 37.99         17.7 GVEP029Q63
    CK20P010 1C2020 08 05.35742 12 42 08.21 -75 08 36.3                VEP029Q62
    CK20P010 KC2020 08 05.35913912 42 07.758-75 08 32.17         17.8 GVEP029Q63
    CK20P010 1C2020 08 05.36247 12 42 07.42 -75 08 26.6                VEP029Q62
    CK20P010 1C2020 08 05.36763 12 42 06.68 -75 08 16.9          16.2 GVEP029Q62
    CK20P010 2C2020 08 05.37507 12 42 05.33 -75 08 03.1          16.5 RVEP029Q62
    CK20P010 2C2020 08 05.37998 12 42 04.69 -75 07 53.3          16.8 RVEP029Q62
    CK20P010 2C2020 08 05.38355 12 42 03.99 -75 07 46.4          16.7 RVEP029Q62
    CK20P010 KC2020 08 05.40337 12 42 01.55 -75 07 09.3          16.1 VqEP029E23
    CK20P010 KC2020 08 05.40684 12 42 01.10 -75 07 02.5          16.2 VqEP029E23
    CK20P010 KC2020 08 05.41031 12 42 00.57 -75 06 56.2          16.0 VqEP029E23
    CK20P010 0C2020 08 05.46653 12 41 51.92 -75 05 10.2          17.3 GVEP029Q62
    CK20P010 0C2020 08 05.47315 12 41 51.11 -75 04 57.9          17.2 GVEP029Q62
    CK20P010 0C2020 08 05.48109 12 41 49.85 -75 04 42.7          16.9 GVEP029Q62
    CK20P010 ;C2020 08 05.49218 12 41 48.35 -75 04 22.8          16.4 GVEP029Q62
    CK20P010 ;C2020 08 05.49321 12 41 48.18 -75 04 20.1          16.9 GVEP029Q62
    CK20P010 ;C2020 08 05.49422 12 41 47.96 -75 04 17.7          16.5 GVEP029Q62
    CK20P010 ;C2020 08 05.49521 12 41 47.81 -75 04 15.6          16.8 GVEP029Q62
    CK20P010 ;C2020 08 05.49620 12 41 47.67 -75 04 13.8          17.0 GVEP029Q62
    CK20P010 KC2020 08 05.94319 12 40 45.70 -74 50 28.6          17.6 VqEP029X31
    CK20P010 KC2020 08 05.94779 12 40 44.91 -74 50 19.4          17.2 VqEP029X31
    CK20P010 KC2020 08 05.95233 12 40 44.21 -74 50 10.6          17.7 VqEP029X31
    CK20P010 KC2020 08 05.95681 12 40 43.73 -74 50 02.4          16.9 GVEP029X31
    CK20P010 KC2020 08 05.96134 12 40 43.09 -74 49 53.9          17.5 GVEP029X31
    CK20P010 KC2020 08 05.96587 12 40 42.50 -74 49 45.5          16.8 GVEP029X31
    CK20P010 KC2020 08 05.97122 12 40 41.60 -74 49 35.6          17.0 GVEP029X31
    CK20P010  C2020 08 06.91938 12 38 39.79 -74 20 15.5          17.4 RqEP029X74
    CK20P010  C2020 08 06.92395 12 38 39.34 -74 20 08.6          17.3 RqEP029X74
    CK20P010  C2020 08 06.92848 12 38 39.03 -74 20 00.6          17.6 RqEP029X74
    CK20P010  C2020 08 07.96328 12 36 39.70 -73 47 56.6          16.7 GVEP029G39
    CK20P010  C2020 08 07.96550 12 36 38.62 -73 47 51.7          17.1 GVEP029G39
    CK20P010  C2020 08 07.96920 12 36 38.50 -73 47 43.8          17.0 GVEP029G39
    CK20P010 #C2020 08 07.99957 12 36 35.09 -73 46 47.6          16.7 GVEP029W88
    CK20P010 #C2020 08 08.02241 12 36 32.64 -73 46 04.7          16.7 GVEP029W88
    CK20P010 #C2020 08 08.02750 12 36 32.09 -73 45 55.1          16.5 GVEP029W88
    CK20P010 %C2020 08 08.11825 12 36 22.48 -73 43 03.9          16.7 GVEP029W88
    CK20P010 %C2020 08 08.12586 12 36 21.51 -73 42 49.0          16.9 GVEP029W88
    CK20P010 %C2020 08 08.13961 12 36 20.03 -73 42 22.5          16.4 GVEP029W88

Observer details:
C51 WISE.  Observer Near-Earth Object Wide-field Infrared Survey Explorer.
    Measurers A. K. Mainzer, J. M. Bauer, T. Grav, J. R. Masiero, R. M. Cutri,
    J. W. Dailey, E. Kramer, J. Pittichova, S. Sonnett, E. L. Wright.
E23 Arcadia.  Observer A. Hidas.  0.35-m f/1.9 reflector + CCD.
G39 ROAD, San Pedro de Atacama.  Observers F.-J. Hambsch, E. Bryssinck.
    Measurer E. Bryssinck.  0.4-m f/6.8 reflector + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observers M. Mattiazzo, H. Sato,
    M. Urbanik, A. Valvasori, E. Guido.  0.43-m f/6.8 astrograph + CCD, 0.51-m
    f/6.8 astrograph + CCD + f/4.5 focal reducer, 0.3-m f/9 reflector + CCD,
    0.50-m f/6.8 astrograph + CCD + focal reducer.
Q63 Siding Spring-LCO A.  Observers T. Lister, J. Chatelain, E. Gomez, S.
    Greenstreet.  Measurer T. Lister.  1.0-m f/8.0 Ritchey-Chretien + CCD.
W88 Slooh.com Chile Observatory, La Dehesa.  Observers N. Paul, G. Gasparovic,
    Y. Chen, M. Suzuki.  Measurers N. Paul, G. Gasparovic, Y. Chen, G. Y.
    Gasparovic, M. Suzuki.  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.
X74 Observatorio Campo dos Amarais.  Observer L. S. Amaral.  0.31-m f/4
    Newtonian reflector + CCD.
Y00 SONEAR Observatory, Oliveira.  Observers C. Jacques, E. Pimentel, J.
    Barros.  Measurer C. Jacques.  0.28-m f/2.2 astrograph + CCD.

Orbital elements:
    C/2020 P1 (NEOWISE)                                                         
T 2020 Oct. 20.17306 TT                                 Rudenko                 
q   0.3424981            (2000.0)            P               Q                  
                   Peri.    8.90150     +0.49965184     -0.65340837             
                   Node    53.50591     +0.74483587     -0.01108722             
e   1.0            Incl.   45.02334     +0.44223022     +0.75692442             
>From 63 observations 2020 Aug. 2-8.                                             
                                                                                
Ephemeris:
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2020 07 09    18 04 49.0 -83 21 33   1.4470  2.1307   118.7    24.7  17.4
...
2020 07 24    13 46 06.4 -81 11 29   1.3103  1.8964   108.6    30.5  16.8
...
2020 08 01    12 55 42.0 -77 22 26   1.2519  1.7667   101.9    34.2  16.5
...
2020 08 07    12 38 31.1 -74 17 44   1.2124  1.6670    96.6    37.2  16.2
2020 08 08    12 36 36.5 -73 46 46   1.2060  1.6502    95.6    37.7  16.1
2020 08 09    12 34 54.2 -73 15 51   1.1997  1.6333    94.7    38.2  16.1
...
2020 08 15    12 28 03.1 -70 11 50   1.1623  1.5306    89.2    41.4  15.8
...
2020 08 23    12 24 47.7 -66 13 11   1.1118  1.3897    81.6    46.0  15.4
...
2020 09 07    12 26 42.3 -58 56 29   1.0026  1.1116    67.1    56.6  14.4

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-P29




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