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  • MPEC 2021-V21 : COMET P/2021 U3 (Attard-Maury)

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    M.P.E.C. 2021-V21                              Issued 2021 November 2, 01:42 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 P/2021 U3 (Attard-Maury)                      
    
         A. Maury reports the discovery of a comet in survey images taken on 
    Oct. 24 UT by MAP (W94), noting a fuzzy apperance, confirming its cometary
    appearance on the following night by Observatorio Panameno (W95). Additional
    reports of cometary features are as follows:
    
    OC   Date        Reporter           Coma    Tail    PA          Exposures
    
    X02  2021-10-27  E. Guido           6"       6"    275           51x60s
    B96  2021-10-28  E. Bryssinck       8"       8"    270           60x60s
    W88  2021-10-28  N. Paul            5".3                         13x50s
    G18  2021-10-29  A. Valvasori       5"       6"    270           66x60s
    G40  2021-10-29  B. Lutkenhoner     7"                           34x50s
    G40  2021-10-29  N. Paul            7"                           20x50s
    204  2021-10-29  A. Aletti          5"                           
    H06  2021-10-29  H. Sato            8"       6"    270           16x60s
    G00  2021-11-01  M. Jaeger         10"      25"    262           11x150s
    
    Observations:
        PK21U030*KC2021 10 24.31345 06 26 47.39 -11 28 40.7          19.2 GVEV021W94
        PK21U030 KC2021 10 24.31935 06 26 47.06 -11 28 34.9          19.2 GVEV021W94
        PK21U030 KC2021 10 24.32513 06 26 46.73 -11 28 28.5          19.3 GVEV021W94
        PK21U030 KC2021 10 25.34691 06 25 53.99 -11 10 19.5          19.3 GVEV021W95
        PK21U030 KC2021 10 25.35220 06 25 53.63 -11 10 13.7          19.3 GVEV021W95
        PK21U030 KC2021 10 25.35747 06 25 53.32 -11 10 07.7          18.8 GVEV021W95
        PK21U030 KC2021 10 26.24349 06 25 04.92 -10 53 52.3          18.4 GVEV021W95
        PK21U030 KC2021 10 26.24876 06 25 04.58 -10 53 46.2          18.9 GVEV021W95
        PK21U030 KC2021 10 26.25403 06 25 04.28 -10 53 41.0          17.8 GVEV021W95
        PK21U030 KC2021 10 26.31324 06 25 00.80 -10 52 35.1          18.9 GVEV021W95
        PK21U030 KC2021 10 26.31852 06 25 00.45 -10 52 28.4          18.9 GVEV021W95
        PK21U030 KC2021 10 26.32380 06 25 00.14 -10 52 23.3          18.8 GVEV021W95
        PK21U030 KC2021 10 26.33464 06 24 59.52 -10 52 10.9          18.5 GVEV021W95
        PK21U030 KC2021 10 26.33947 06 24 59.23 -10 52 05.3          18.9 GVEV021W95
        PK21U030 KC2021 10 26.34475 06 24 58.91 -10 51 59.6          18.4 GVEV021W95
        PK21U030 hC2021 10 27.02201406 24 19.59 -10 39 18.9          19.4 GVEV021L01
        PK21U030 hC2021 10 27.02439706 24 19.49 -10 39 16.1          19.6 GVEV021L01
        PK21U030 hC2021 10 27.02683206 24 19.33 -10 39 13.3          19.4 GVEV021L01
        PK21U030 KC2021 10 27.07449 06 24 16.48 -10 38 19.7          18.6 GVEV021M10
        PK21U030 KC2021 10 27.08457 06 24 15.83 -10 38 07.4          17.4 GVEV021M10
        PK21U030 KC2021 10 27.10435 06 24 14.68 -10 37 44.6          18.6 GVEV021M10
        PK21U030 KC2021 10 27.13497 06 24 12.71 -10 37 11.0          19.1 GVEV021L06
        PK21U030 KC2021 10 27.14500 06 24 12.12 -10 36 59.0          19.3 GVEV021L06
        PK21U030 KC2021 10 27.14669 06 24 12.01 -10 36 57.0          19.3 GVEV021L06
        PK21U030 KC2021 10 27.14951 06 24 11.84 -10 36 53.7          19.3 GVEV021L06
        PK21U030 KC2021 10 27.28100 06 24 04.22 -10 34 13.9          18.5 GVEV021X02
        PK21U030 KC2021 10 27.30726 06 24 02.54 -10 33 43.8          19.2 GVEV021X02
        PK21U030 KC2021 10 27.31348 06 24 02.15 -10 33 37.1          18.8 GVEV021W95
        PK21U030 KC2021 10 27.31873 06 24 01.80 -10 33 31.5          18.6 GVEV021W95
        PK21U030 KC2021 10 27.32395 06 24 01.48 -10 33 25.5          18.2 GVEV021W95
        PK21U030  C2021 10 27.56150206 23 47.01 -10 28 54.6          18.94oVEV021T05
        PK21U030  C2021 10 27.56334906 23 46.88 -10 28 51.9          18.91oVEV021T05
        PK21U030  C2021 10 27.56609306 23 46.74 -10 28 49.2          19.14oVEV021T05
        PK21U030  C2021 10 27.57484506 23 46.21 -10 28 39.3          19.03oVEV021T05
        PK21U030 KC2021 10 28.05942 06 23 16.06 -10 19 11.5          19.2 RqEV021L27
        PK21U030 KC2021 10 28.07027 06 23 15.41 -10 18 58.8          19.6 RqEV021L27
        PK21U030 KC2021 10 28.08577 06 23 14.31 -10 18 40.5          19.4 RqEV021L27
        PK21U030 KC2021 10 28.14193 06 23 10.58 -10 17 34.7          18.1 GVEV021B96
        PK21U030 KC2021 10 28.16990 06 23 08.90 -10 17 00.8          18.7 GVEV021B96
        PK21U030 KC2021 10 28.30123 06 23 00.70 -10 14 17.5          18.6 GVEV021W95
        PK21U030 KC2021 10 28.30651 06 23 00.30 -10 14 10.9          18.7 GVEV021W95
        PK21U030 %C2021 10 28.30677 06 23 00.29 -10 14 09.8          19.5 GVEV021W88
        PK21U030 KC2021 10 28.31177 06 22 59.93 -10 14 04.8          18.8 GVEV021W95
        PK21U030 %C2021 10 28.31515 06 22 59.76 -10 13 59.3          19.1 GVEV021W88
        PK21U030 KC2021 10 29.05075 06 22 11.55 -09 59 18.0          19.1 GVEV021204
        PK21U030 KC2021 10 29.08689 06 22 09.15 -09 58 34.4          17.4 GVEV021G18
        PK21U030 KC2021 10 29.09598 06 22 08.46 -09 58 23.5                VEV021204
        PK21U030 KC2021 10 29.11119 06 22 07.45 -09 58 04.8          18.7 RqEV021C10
        PK21U030 2C2021 10 29.11302 06 22 07.53 -09 58 01.2          18.5 GVEV021G40
        PK21U030 KC2021 10 29.12175 06 22 06.79 -09 57 52.5          17.8 GVEV021G18
        PK21U030 2C2021 10 29.12727 06 22 06.53 -09 57 43.3          18.5 GVEV021G40
        PK21U030 KC2021 10 29.13499 06 22 05.79 -09 57 35.7          18.7 RqEV021C10
        PK21U030 2C2021 10 29.14106 06 22 05.54 -09 57 26.8          18.9 GVEV021G40
        PK21U030 KC2021 10 29.15880 06 22 04.11 -09 57 06.7          18.7 RqEV021C10
        PK21U030 9C2021 10 29.16098 06 22 04.12 -09 57 02.0          18.7 GVEV021G40
        PK21U030 9C2021 10 29.17780 06 22 03.02 -09 56 41.2          18.8 GVEV021G40
        PK21U030 KC2021 10 29.24649 06 21 58.52 -09 55 10.9          18.1 GVEV021W95
        PK21U030 KC2021 10 29.25171 06 21 58.18 -09 55 04.6          18.7 GVEV021W95
        PK21U030 KC2021 10 29.25692 06 21 57.81 -09 54 58.7          18.5 GVEV021W95
        PK21U030 |C2021 10 29.46857 06 21 43.09 -09 50 43.4                VEV021H06
        PK21U030 |C2021 10 29.47555 06 21 42.60 -09 50 34.6          18.6 GVEV021H06
        PK21U030 KC2021 10 30.05036406 21 02.86 -09 38 35.2          19.7 GVEV021595
        PK21U030 KC2021 10 30.05803106 21 02.27 -09 38 25.6          19.6 GVEV021595
        PK21U030 KC2021 10 30.09324 06 20 59.74 -09 37 40.8                VEV021104
        PK21U030 KC2021 10 30.11123 06 20 58.42 -09 37 18.6          19.1 GVEV021104
        PK21U030 KC2021 10 30.12957 06 20 57.03 -09 36 55.4          18.7 GVEV021104
        PK21U030 KC2021 10 30.31200 06 20 44.15 -09 32 55.9          18.7 GVEV021W95
        PK21U030 KC2021 10 30.31722 06 20 43.78 -09 32 49.2          18.6 GVEV021W95
        PK21U030 KC2021 10 30.32245 06 20 43.39 -09 32 42.7          18.6 GVEV021W95
        PK21U030 3C2021 10 30.68570 06 20 17.09 -09 24 55.5          17.8 RVEV021Q62
        PK21U030 3C2021 10 30.69140 06 20 16.66 -09 24 48.2          17.9 RVEV021Q62
        PK21U030 3C2021 10 30.69717 06 20 16.30 -09 24 40.8          18.0 RVEV021Q62
        PK21U030 KC2021 10 30.97415 06 19 55.96 -09 18 49.9          19.1 GXEV021G02
        PK21U030 KC2021 10 30.97898 06 19 55.55 -09 18 43.7                XEV021G02
        PK21U030 KC2021 10 30.98384 06 19 55.24 -09 18 36.7                XEV021G02
        PK21U030 KC2021 10 31.23836 06 19 36.23 -09 12 56.2          18.4 GVEV021W95
        PK21U030 KC2021 10 31.24359 06 19 35.82 -09 12 49.1          17.8 GVEV021W95
        PK21U030 KC2021 10 31.31648 06 19 30.12 -09 11 13.6          18.7 GVEV021W95
        PK21U030 KC2021 10 31.32169 06 19 29.72 -09 11 06.7          18.7 GVEV021W95
        PK21U030 KC2021 10 31.32690 06 19 29.31 -09 10 59.7          18.4 GVEV021W95
        PK21U030  C2021 10 31.55091606 19 12.27 -09 06 08.3          18.63oVEV021T05
        PK21U030  C2021 10 31.55320906 19 12.06 -09 06 05.7          18.84oVEV021T05
        PK21U030  C2021 10 31.56651606 19 11.02 -09 05 47.6          18.90oVEV021T05
        PK21U030  C2021 10 31.56931106 19 10.81 -09 05 43.4          19.09oVEV021T05
        PK21U030 KC2021 11 01.09948 06 18 29.52 -08 53 56.0          18.6 GVEV021G00
        PK21U030 KC2021 11 01.10862 06 18 28.80 -08 53 43.5          18.7 GVEV021G00
        PK21U030 KC2021 11 01.11299 06 18 28.48 -08 53 37.6          18.8 GVEV021G00
        PK21U030 KC2021 11 01.30445 06 18 13.49 -08 49 09.1                VEV021W95
        PK21U030 KC2021 11 01.30973 06 18 13.03 -08 49 02.7          18.4 GVEV021W95
        PK21U030 KC2021 11 01.31499 06 18 12.58 -08 48 55.5          18.7 GVEV021W95
        PK21U030 KC2021 11 01.42132206 18 04.05 -08 46 36.8          18.3 GXEV021858
        PK21U030 KC2021 11 01.45126506 18 01.58 -08 45 56.0          19.6 GXEV021858
        PK21U030 KC2021 11 01.48174106 17 59.06 -08 45 14.8          18.5 GXEV021858
    
    Observer details:
    104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
        P. Bacci, L. Tesi, G. Fagioli.  0.60-m f/4 reflector + CCD.
    204 Schiaparelli Observatory.  Observer A. Aletti.  0.20-m f/4 reflector +
        CCD.
    595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
    858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.16-m
        refractor + CCD.
    B96 Brixiis Observatory, Kruibeke.  Observer E. Bryssinck.  0.4-m f/3.8
        reflector + CCD.
    C10 Maisoncelles.  Observer J.-F. Soulier.  0.30-m f/3.8 Newtonian reflector +
        CCD.
    G00 AZM Martinsberg, Oed.  Observers M. Jaeger, E. Prosperi, S. Prosperi.
        Measurer M. Jaeger.  0.28-m f/2.2 reflector + CCD.
    G02 KYSUCE Observatory, Kysucke Nove Mesto.  Observer M. Urbanik.  0.40-m
        f/4.5 Corrected Dall-Kirkham + CCD.
    G18 ALMO Observatory, Padulle.  Observers A. Valvasori, E. Guido.  Measurer A.
        Valvasori.  0.30-m f/4 reflector + CCD.
    G40 Slooh.com Canary Islands Observatory.  Observers N. Paul, B. Lutkenhoner.
        0.5-m f/6.8 Corrected Dall-Kirkham + CCD.
    H06 iTelescope Observatory, Mayhill.  Observer H. Sato.  0.43-m f/6.8
        astrograph + CCD + f/4.5 focal reducer.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    L06 Sormano 2 Observatory, Bellagio Via Lattea.  Observer G. Ventre.
        Measurers P. Sicoli, G. Ventre.  0.36-m Schmidt-Cassegrain + CCD.
    L27 29PREMOTE Observatory, Dauban.  Observer J.-F. Soulier.  0.25-m f/3.5
        Newtonian reflector + CCD.
    M10 CPF Observatory, St Vallier de Thiey.  Observer C. Pin-ferrier.  0.25-m
        f/5 reflector + CCD.
    Q62 iTelescope Observatory, Siding Spring.  Observer R. Ligustri.
    T05 ATLAS-HKO, Haleakala.  Observers L. Denneau, J. Tonry, H. Weiland.
        Measurers L. Denneau, J. Tonry, H. Weiland, A. Fitzsimmons, J. Robinson,
        N. Erasmus.  0.5-m reflector + CCD.
    W88 Slooh.com Chile Observatory, La Dehesa.  Observer N. Paul.  0.43-m f/6.8
        Corrected Dall-Kirkham + CCD.
    W94 MAP, San Pedro de Atacama.  Observers A. Maury, G. Attard.  Measurers A.
        Maury, G. Attard, D. Parrott.  0.28-m f/2.2 Schmidt + 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,
        M. Fulle, G. Milani, C. Nassef, G. Savini, A. Valvasori.  Measurer E.
        Guido.  0.61-m f/6.5 astrograph + CCD.
    
    Orbital elements:
        P/2021 U3 (Attard-Maury)                                                    
    Epoch 2021 Nov. 2.0 TT = JDT 2459520.5                                          
    T 2021 Oct. 25.43539 TT                                 Rudenko                 
    q   1.8884498            (2000.0)            P               Q                  
    n   0.11338158     Peri.  335.48316     +0.37072033     -0.19317035             
    a   4.2277346      Node    75.09970     +0.92846895     +0.10091053             
    e   0.5533187      Incl.   70.05875     -0.02262395     +0.97596223             
    P   8.69                                                                        
    From 93 observations 2021 Oct. 24-Nov. 1, mean residual 0".4.                   
                                                                                    
        P/2021 U3 (Attard-Maury)                                                    
    Epoch 2030 June 28.0 TT = JDT 2462680.5                                         
    T 2030 July 12.11045 TT                                 Rudenko                 
    q   1.8971229            (2000.0)            P               Q                  
    n   0.11294802     Peri.  335.58090     +0.37124960     -0.19453041             
    a   4.2385466      Node    75.07115     +0.92829724     +0.09979617             
    e   0.5524119      Incl.   69.99176     -0.02092747     +0.97580666             
    P   8.73                                                                        
    From 93 observations 2021 Oct. 24-Nov. 1, mean residual 0".4.                   
                                                                                    
        P/2021 U3 (Attard-Maury)                                                    
    Epoch 2021 July 5.0 TT = JDT 2459400.5                                          
    T 2021 Oct. 25.42981 TT                                 Rudenko                 
    q   1.8884675            (2000.0)            P               Q                  
    n   0.11340068     Peri.  335.48005     +0.37073452     -0.19313507             
    a   4.2272598      Node    75.09913     +0.92846193     +0.10095870             
    e   0.5532644      Incl.   70.05946     -0.02267959     +0.97596423             
    P   8.69                                                                        
    From 93 observations 2021 Oct. 24-Nov. 1, mean residual 0".4.                   
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2021 10 03    06 33 23.9 -16 04 50   1.6241  1.9000    89.5    31.8  19.3
    ...
    2021 10 18    06 30 56.8 -13 08 45   1.4093  1.8897   102.2    31.0  19.0
    ...
    2021 10 26    06 25 18.3 -10 58 26   1.2957  1.8885   110.4    29.6  18.8
    ...
    2021 11 01    06 18 37.5 -08 56 05   1.2140  1.8894   117.4    27.8  18.7
    2021 11 02    06 17 17.1 -08 33 15   1.2008  1.8898   118.7    27.4  18.7
    2021 11 03    06 15 52.6 -08 09 38   1.1879  1.8901   120.0    27.0  18.6
    ...
    2021 11 09    06 05 57.4 -05 30 42   1.1143  1.8933   128.1    24.3  18.5
    ...
    2021 11 17    05 48 38.1 -01 08 00   1.0317  1.9001   140.2    19.4  18.4
    ...
    2021 12 02    05 04 28.8 +09 30 01   0.9501  1.9204   165.4     7.4  18.2
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-V21
    


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