[Iaude] MPEC K107: COMET C/2020 H7 (Lemmon)

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu May 21 18:38:13 EDT 2020


M.P.E.C. 2020-K107                                 Issued 2020 May 21, 22:35 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 H7 (Lemmon)                            

     This object was reported on Apr. 29 as a possible NEO candidate by
G. J. Leonard on behalf of the Mount Lemmon Survey (G96), without any mention
of cometary activity.  Below are reports of cometary features:

OC   Date        Reporter           Coma    Tail    PA          Exposures
J95  2020-05-06  P. Birtwhistle      4"       9"    110
B96  2020-05-11  E. Bryssinck        8"                         25x120s
F65  2020-05-12  P. Breitenstein     3"       6"    145          5x70s
I52  2020-05-13  D. Rankin           7"
256  2020-05-17  M. Tichy            5"                          25s

Observations:
    CK20H070* C2020 04 29.42332 17 40 11.31 +27 32 32.7          20.6 GVEK107G96
    CK20H070  C2020 04 29.42852 17 40 10.87 +27 32 36.9          20.7 GVEK107G96
    CK20H070  C2020 04 29.43376 17 40 10.38 +27 32 40.7          20.7 GVEK107G96
    CK20H070  C2020 04 29.43900 17 40 09.92 +27 32 44.9          20.6 GVEK107G96
    CK20H070  C2020 04 29.47407 17 40 06.79 +27 33 12.2          20.6 GVEK107I52
    CK20H070  C2020 04 29.47764 17 40 06.48 +27 33 14.9                VEK107I52
    CK20H070  C2020 04 29.47919 17 40 06.33 +27 33 15.5                VEK107I52
    CK20H070  C2020 04 30.29977 17 38 53.71 +27 43 58.8          20.2 GVEK107I52
    CK20H070  C2020 04 30.30272 17 38 53.47 +27 44 00.6          21.0 GVEK107I52
    CK20H070  C2020 04 30.30425 17 38 53.25 +27 44 01.6          20.5 GVEK107I52
    CK20H070  C2020 04 30.30578 17 38 53.16 +27 44 02.5          21.7 GVEK107I52
    CK20H070  C2020 04 30.49355717 38 36.291+27 46 29.45         20.9 GVEK107F52
    CK20H070  C2020 04 30.50477217 38 35.253+27 46 38.47         20.4 GVEK107F52
    CK20H070 KC2020 05 01.31358617 37 22.21 +27 57 03.4          20.4 VuEK107H21
    CK20H070 KC2020 05 01.31649217 37 21.93 +27 57 05.7          20.5 VuEK107H21
    CK20H070 KC2020 05 01.31997917 37 21.62 +27 57 08.3          20.6 VuEK107H21
    CK20H070 KC2020 05 01.32211017 37 21.44 +27 57 09.8          20.8 VuEK107H21
    CK20H070 KC2020 05 02.09223117 36 10.84 +28 07 00.1          20.7 GVEK107L01
    CK20H070 KC2020 05 02.10072617 36 10.09 +28 07 07.1          20.6 GVEK107L01
    CK20H070 IC2020 05 02.10528217 36 09.70 +28 07 10.3          20.6 GVEK107L01
    CK20H070 KC2020 05 02.34186 17 35 47.83 +28 10 11.5          20.3 RqEK107H36
    CK20H070 KC2020 05 02.34935 17 35 47.12 +28 10 16.6          20.2 RqEK107H36
    CK20H070 KC2020 05 02.35684 17 35 46.48 +28 10 21.5          20.5 RqEK107H36
    CK20H070  C2020 05 02.41037 17 35 41.49 +28 11 03.0                VEK107I52
    CK20H070  C2020 05 02.41314 17 35 41.24 +28 11 06.0                VEK107I52
    CK20H070  C2020 05 02.44084 17 35 38.65 +28 11 26.4          20.9 GVEK107I52
    CK20H070 5C2020 05 02.46892 17 35 36.05 +28 11 47.7                VEK107U69
    CK20H070 5C2020 05 02.47521 17 35 35.48 +28 11 52.5          20.8 GVEK107U69
    CK20H070 KC2020 05 03.02430617 34 44.36 +28 18 48.6          19.9 GVEK107B37
    CK20H070 KC2020 05 03.04357617 34 42.63 +28 19 04.5          20.2 GVEK107B37
    CK20H070 KC2020 05 03.06284117 34 40.75 +28 19 17.1          19.5 GVEK107B37
    CK20H070  C2020 05 03.40709 17 34 08.38 +28 23 37.0          20.1 GVEK107I52
    CK20H070  C2020 05 03.40960 17 34 08.10 +28 23 38.7          20.6 GVEK107I52
    CK20H070  C2020 05 03.41211 17 34 07.85 +28 23 40.4          20.7 GVEK107I52
    CK20H070  C2020 05 03.41461 17 34 07.63 +28 23 42.6          20.1 GVEK107I52
    CK20H070  C2020 05 04.46956217 32 27.441+28 36 49.28         20.6 GVEK107F52
    CK20H070  C2020 05 04.48139417 32 26.315+28 36 58.41         19.9 GVEK107F52
    CK20H070  C2020 05 04.50509317 32 24.012+28 37 16.21         20.7 GVEK107F52
    CK20H070  C2020 05 05.37830 17 30 59.77 +28 47 57.1          19.7 GVEK107I52
    CK20H070  C2020 05 05.38316 17 30 59.28 +28 48 00.9          19.9 GVEK107I52
    CK20H070  C2020 05 05.38801 17 30 58.80 +28 48 03.7          19.9 GVEK107I52
    CK20H070  C2020 05 05.39288 17 30 58.38 +28 48 07.2          20.1 GVEK107I52
    CK20H070 KC2020 05 06.03449017 29 55.71 +28 55 53.7          20.5 GVEK107J95
    CK20H070 KC2020 05 06.04734217 29 54.38 +28 56 03.3          20.4 GVEK107J95
    CK20H070 KC2020 05 06.05995617 29 53.17 +28 56 11.7          20.4 GVEK107J95
    CK20H070  C2020 05 06.36006 17 29 23.69 +28 59 49.2                VEK107I52
    CK20H070  C2020 05 06.36305 17 29 23.31 +28 59 51.9                VEK107I52
    CK20H070  C2020 05 06.36604 17 29 22.98 +28 59 54.6                VEK107I52
    CK20H070  C2020 05 06.36902 17 29 22.77 +28 59 55.8                VEK107I52
    CK20H070 KC2020 05 06.95264717 28 25.00 +29 06 52.7                VEK107J95
    CK20H070 KC2020 05 06.99022117 28 21.20 +29 07 20.2          20.8 GVEK107J95
    CK20H070 KC2020 05 09.00520417 24 57.86 +29 30 51.6          20.3 GVEK107J95
    CK20H070 KC2020 05 09.02010517 24 56.37 +29 31 01.3          19.9 GVEK107J95
    CK20H070 KC2020 05 11.05297 17 21 25.44 +29 53 54.0                VEK107118
    CK20H070 KC2020 05 11.06743 17 21 23.92 +29 54 03.8                VEK107118
    CK20H070 KC2020 05 11.94483 17 19 51.25 +30 03 38.0          20.1 GVEK107B96
    CK20H070 KC2020 05 11.95459 17 19 50.21 +30 03 44.7          20.0 GVEK107B96
    CK20H070 KC2020 05 11.96436 17 19 49.14 +30 03 50.6          19.9 GVEK107B96
    CK20H070 KC2020 05 11.97495 17 19 48.07 +30 03 58.1          19.9 GVEK107B96
    CK20H070  C2020 05 12.32503 17 19 10.84 +30 07 44.8          20.6 GVEK107I52
    CK20H070  C2020 05 12.32756 17 19 10.58 +30 07 46.3          20.7 GVEK107I52
    CK20H070  C2020 05 12.33010 17 19 10.30 +30 07 47.9          21.0 GVEK107I52
    CK20H070  C2020 05 12.33264 17 19 10.02 +30 07 49.9          21.8 GVEK107I52
    CK20H070 2C2020 05 12.43242 17 18 59.39 +30 08 54.4          19.1 RoEK107F65
    CK20H070 2C2020 05 12.43341 17 18 59.29 +30 08 55.2          19.3 RoEK107F65
    CK20H070 2C2020 05 12.43539 17 18 59.09 +30 08 56.4          19.2 RoEK107F65
    CK20H070 2C2020 05 12.43737 17 18 58.87 +30 08 57.7          19.5 RoEK107F65
    CK20H070  C2020 05 13.31206 17 17 24.94 +30 18 12.8          20.9 GVEK107I52
    CK20H070  C2020 05 13.31430 17 17 24.70 +30 18 15.1                VEK107I52
    CK20H070  C2020 05 13.31693 17 17 24.42 +30 18 16.1          21.1 GVEK107I52
    CK20H070  C2020 05 13.31860 17 17 24.25 +30 18 16.7          20.4 GVEK107I52
    CK20H070  C2020 05 13.58896717 16 54.852+30 21 07.48         21.4 GVEK107F52
    CK20H070  C2020 05 13.59352317 16 54.333+30 21 10.27         21.6 GVEK107F52
    CK20H070  C2020 05 13.59808017 16 53.871+30 21 13.27         20.9 GVEK107F52
    CK20H070  C2020 05 14.33178 17 15 34.27 +30 28 47.2          20.5 GVEK107I52
    CK20H070  C2020 05 14.33391 17 15 34.02 +30 28 48.9          20.5 GVEK107I52
    CK20H070  C2020 05 14.33527 17 15 33.87 +30 28 49.3          20.3 GVEK107I52
    CK20H070  C2020 05 14.33828 17 15 33.52 +30 28 50.7          20.5 GVEK107I52
    CK20H070  C2020 05 15.24161 17 13 54.52 +30 37 58.9          21.0 GVEK107I52
    CK20H070  C2020 05 15.25012 17 13 53.63 +30 38 04.4          20.7 GVEK107I52
    CK20H070  C2020 05 15.26154 17 13 52.27 +30 38 11.1                VEK107I52
    CK20H070 1C2020 05 15.35279 17 13 42.24 +30 39 05.8                LEK107658
    CK20H070 1C2020 05 15.35479 17 13 42.03 +30 39 07.1                LEK107658
    CK20H070 1C2020 05 15.35682 17 13 41.80 +30 39 08.2                LEK107658
    CK20H070 1C2020 05 15.35882 17 13 41.58 +30 39 09.3                LEK107658
    CK20H070 1C2020 05 15.36082 17 13 41.37 +30 39 10.6                LEK107658
    CK20H070  C2020 05 16.36548 17 11 49.95 +30 49 03.3          20.6 GVEK107I52
    CK20H070  C2020 05 16.36812 17 11 49.64 +30 49 04.9          20.3 GVEK107I52
    CK20H070  C2020 05 16.37076 17 11 49.33 +30 49 07.1          20.9 GVEK107I52
    CK20H070  C2020 05 16.37339 17 11 49.11 +30 49 08.3          20.9 GVEK107I52
    CK20H070  C2020 05 16.52836117 11 31.746+30 50 38.89         20.46iUEK107F51
    CK20H070  C2020 05 16.54082917 11 30.345+30 50 46.31         20.30iUEK107F51
    CK20H070  C2020 05 16.55858117 11 28.344+30 50 56.50         20.66iUEK107F52
    CK20H070  C2020 05 16.57091717 11 26.946+30 51 03.81         20.56iUEK107F51
    CK20H070  C2020 05 16.57107517 11 26.918+30 51 03.86         20.36iUEK107F52
    CK20H070  C2020 05 16.58357617 11 25.542+30 51 11.04         20.30iUEK107F52
    CK20H070  C2020 05 16.59604917 11 24.131+30 51 18.26         21.04iUEK107F52
    CK20H070 KC2020 05 17.11096 17 10 26.58 +30 56 12.8          20.8 VqEK107I93
    CK20H070 KC2020 05 17.11528 17 10 26.11 +30 56 15.2          20.4 VqEK107I93
    CK20H070 KC2020 05 17.11907 17 10 25.68 +30 56 17.6          20.3 VqEK107I93
    CK20H070  C2020 05 17.38771 17 09 55.48 +30 58 50.8          20.5 GVEK107G96
    CK20H070  C2020 05 17.39247 17 09 54.97 +30 58 52.7          20.1 GVEK107G96
    CK20H070  C2020 05 17.39726 17 09 54.43 +30 58 55.7          20.3 GVEK107G96
    CK20H070  C2020 05 17.40202 17 09 53.87 +30 58 58.2          20.6 GVEK107G96
    CK20H070  C2020 05 17.55614417 09 36.522+31 00 25.88         20.53wUEK107F52
    CK20H070  C2020 05 17.56860117 09 35.066+31 00 32.95         20.52wUEK107F52
    CK20H070  C2020 05 17.58108317 09 33.669+31 00 39.92         20.38wUEK107F52
    CK20H070  C2020 05 17.59354317 09 32.242+31 00 46.88         20.82wUEK107F52
    CK20H070  C2020 05 17.93362 17 08 54.07 +31 03 55.4                VEK107246
    CK20H070  C2020 05 17.93420 17 08 53.96 +31 03 55.9                VEK107246
    CK20H070  C2020 05 17.93503 17 08 53.91 +31 03 57.3                VEK107246
    CK20H070  C2020 05 17.93539 17 08 53.79 +31 03 56.8                VEK107246
    CK20H070 1C2020 05 18.32807 17 08 09.40 +31 07 34.0                LEK107658
    CK20H070 1C2020 05 18.33007 17 08 09.17 +31 07 35.1                LEK107658
    CK20H070 1C2020 05 18.33207 17 08 08.94 +31 07 36.2                LEK107658
    CK20H070 1C2020 05 18.33410 17 08 08.72 +31 07 37.2                LEK107658
    CK20H070 1C2020 05 18.33610 17 08 08.48 +31 07 38.3                LEK107658
    CK20H070 1C2020 05 18.33810 17 08 08.25 +31 07 39.5                LEK107658
    CK20H070  C2020 05 18.93095 17 07 00.88 +31 13 02.5                VEK107246
    CK20H070 FC2020 05 18.93182 17 07 00.79 +31 13 03.2          20.9 GVEK107246
    CK20H070  C2020 05 18.93212 17 07 00.68 +31 13 02.7                VEK107246
    CK20H070  C2020 05 18.93318 17 07 00.65 +31 13 03.6          20.7 GVEK107246
    CK20H070 FC2020 05 18.93360 17 07 00.41 +31 13 03.2                VEK107246
    CK20H070 1C2020 05 19.30800 17 06 17.80 +31 16 25.1                LEK107658
    CK20H070 1C2020 05 19.30999 17 06 17.59 +31 16 26.1                LEK107658
    CK20H070 1C2020 05 19.31200 17 06 17.33 +31 16 27.3                LEK107658
    CK20H070 1C2020 05 19.31403 17 06 17.10 +31 16 28.1                LEK107658
    CK20H070 1C2020 05 19.31602 17 06 16.88 +31 16 29.1                LEK107658
    CK20H070 KC2020 05 19.89998817 05 10.08 +31 21 35.9          20.4 GVEK107B49
    CK20H070 KC2020 05 19.95204317 05 03.95 +31 22 03.5          19.7 GVEK107B49
    CK20H070 !C2020 05 21.40991 17 02 15.35 +31 34 26.0          20.6 RtEK107673
    CK20H070 !C2020 05 21.42100 17 02 14.15 +31 34 31.4                tEK107673
    CK20H070  C2020 05 21.42469 17 02 13.69 +31 34 33.6                VEK107I52
    CK20H070  C2020 05 21.42711 17 02 13.42 +31 34 34.5                VEK107I52
    CK20H070  C2020 05 21.42995 17 02 13.13 +31 34 35.3                VEK107I52
    CK20H070  C2020 05 21.43249 17 02 12.79 +31 34 36.9          20.5 GVEK107I52

Observer details:
118 Astronomical and Geophysical Observatory, Modra.  Observer S. Gajdos.
    0.6-m f/5.5 reflector + CCD.
246 Klet Observatory-KLENOT.  Observers M. Tichy, J. Ticha, M. Honkova.
    Measurer M. Tichy.  1.06-m f/2.7 reflector + 2048x2048 CCD.
658 National Research Council of Canada.  Observer D. D. Balam.  1.82-m
    reflector + CCD.
673 Table Mountain Observatory, Wrightwood.  Observer J. Pittichova.  1.0-m
    f/15 reflector + CCD.
B37 Obs. de L Ametlla del Valles, Barcelona.  Observer A. Garrigos.  0.51-m
    f/4 reflector + CCD.
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4 reflector +
    CCD.
B96 Brixiis Observatory, Kruibeke.  Observer E. Bryssinck.  0.4-m f/3.8
    reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
    Willman.  Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
    Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
    R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
    Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y.
    Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau,
    J. Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien
    + CCD.
F65 Haleakala-Faulkes Telescope North.  Observers P. Breitenstein, L.
    Broering.  2.0-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observers G. J. Leonard, H. Groeller.  Measurers E. J.
    Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
    Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector +
    10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
    astrograph + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m f/4.1 reflector +
    CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers H. Groeller, R. A.
    Kowalski, D. Rankin, D. C. Fuls, T. A. Pruyne.  Measurers E. J.
    Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
    Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m reflector +
    CCD.
I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/3.7 reflector + CCD.
J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
    + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
U69 iTelescope SRO Observatory, Auberry.  Observer H. Sato.  0.61-m f/6.5
    astrograph + CCD.

Orbital elements:
    C/2020 H7 (Lemmon)                                                          
T 2020 June 2.95098 TT                                  Rudenko                 
q   4.4195447            (2000.0)            P               Q                  
z  +0.0007119      Peri.   82.67797     -0.32117508     -0.85193772             
                   Node   323.51939     -0.86962209     +0.43823332             
e   0.9968538      Incl.  135.92349     +0.37497200     +0.28662463             
>From 136 observations 2020 Apr. 29-May 21.                                      
                                                                                
Ephemeris:
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2020 04 21    17 51 34.6 +25 38 26   3.9657  4.4335   111.5    12.2  20.5
...
2020 05 06    17 29 59.1 +28 55 29   3.8235  4.4254   120.8    11.3  20.4
...
2020 05 14    17 16 10.4 +30 25 22   3.7770  4.4226   124.0    10.9  20.3
...
2020 05 20    17 04 58.5 +31 22 29   3.7569  4.4210   125.4    10.8  20.3
2020 05 21    17 03 03.1 +31 31 01   3.7548  4.4208   125.6    10.7  20.3
2020 05 22    17 01 06.9 +31 39 15   3.7531  4.4206   125.7    10.7  20.3
...
2020 05 28    16 49 16.1 +32 22 03   3.7508  4.4198   125.7    10.7  20.3
...
2020 06 05    16 33 10.4 +33 00 34   3.7682  4.4196   124.3    10.9  20.3
...
2020 06 20    16 03 54.7 +33 15 15   3.8605  4.4217   117.4    11.8  20.4

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-K107




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