• MPC Preparation (Info)

  • MPEC 2018-H93 : COMET P/2018 H2 (PANSTARRS)

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    M.P.E.C. 2018-H93                                Issued 2018 Apr. 26, 17:35 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                              COMET P/2018 H2 (PANSTARRS)
    
    Observations:
        PK18H020  C2017 11 17.61974 12 20 49.980+04 21 48.90         21.4 wLEH093F51
        PK18H020  C2017 11 17.62490 12 20 50.636+04 21 45.03         21.4 wLEH093F51
        PK18H020  C2017 11 17.63004 12 20 51.239+04 21 41.55         21.9 wLEH093F51
        PK18H020* C2018 04 16.52788 15 40 30.703-13 45 13.93         19.9 wUEH093F51
        PK18H020  C2018 04 16.54036 15 40 30.369-13 45 15.63         19.9 wUEH093F51
        PK18H020  C2018 04 16.55286 15 40 30.048-13 45 17.08         19.9 wUEH093F51
        PK18H020  C2018 04 16.56535 15 40 29.720-13 45 18.67         20.0 wUEH093F51
        PK18H020 KC2018 04 17.06579 15 40 17.89 -13 46 25.0          18.7 RqEH093C10
        PK18H020 KC2018 04 17.07807 15 40 17.51 -13 46 26.8          18.7 RqEH093C10
        PK18H020 KC2018 04 17.09036 15 40 17.19 -13 46 28.6          18.8 RqEH093C10
        PK18H020 9C2018 04 17.17648 15 40 15.09 -13 46 37.3          18.9 VUEH093G40
        PK18H020 9C2018 04 17.18446 15 40 14.84 -13 46 38.1          18.8 VUEH093G40
        PK18H020 KC2018 04 17.29518 15 40 12.31 -13 46 53.1          19.4 RqEH093850
        PK18H020 KC2018 04 17.31101 15 40 11.90 -13 46 55.2          18.7 RqEH093850
        PK18H020 KC2018 04 17.32682 15 40 11.47 -13 46 56.7          18.5 RqEH093850
        PK18H020 KC2018 04 17.34264 15 40 11.01 -13 46 59.1          18.9 RqEH093850
        PK18H020 KC2018 04 17.35841 15 40 10.60 -13 47 01.1          19.3 RqEH093850
        PK18H020 |C2018 04 17.40411 15 40 09.46 -13 47 06.2                vEH093H06
        PK18H020 |C2018 04 17.40651 15 40 09.40 -13 47 06.7                vEH093H06
        PK18H020 |C2018 04 17.40891 15 40 09.36 -13 47 06.6          18.4 wvEH093H06
        PK18H020 ^C2018 04 17.47037 15 40 08.064-13 47 13.49         18.8 GUEH093568
        PK18H020 ^C2018 04 17.47155 15 40 08.032-13 47 13.67         18.7 GUEH093568
        PK18H020 ^C2018 04 17.47273 15 40 08.000-13 47 13.80         18.8 GUEH093568
        PK18H020 cC2018 04 17.94061 15 39 56.17 -13 48 15.0                qEH093246
        PK18H020 cC2018 04 17.94464 15 39 56.01 -13 48 16.0                qEH093246
        PK18H020 cC2018 04 17.94695 15 39 55.93 -13 48 16.6                qEH093246
        PK18H020 KC2018 04 18.00466 15 39 54.55 -13 48 22.7          18.8 GUEH093Z84
        PK18H020 KC2018 04 18.01417 15 39 54.28 -13 48 23.7          18.8 GUEH093Z84
        PK18H020 KC2018 04 18.02369 15 39 54.04 -13 48 25.1          19.3 GUEH093Z84
        PK18H020 KC2018 04 18.03336 15 39 53.76 -13 48 26.4          19.3 GUEH093Z84
        PK18H020  C2018 04 18.64702 15 39 37.61 -13 49 43.9          18.8 RrEH093P93
        PK18H020  C2018 04 18.65025 15 39 37.54 -13 49 43.9          19.1 RrEH093P93
        PK18H020  C2018 04 18.65349 15 39 37.42 -13 49 45.0          19.1 RrEH093P93
        PK18H020  C2018 04 18.65672 15 39 37.34 -13 49 45.2          19.2 RrEH093P93
        PK18H020  C2018 04 18.94314 15 39 29.66 -13 50 21.5                qEH093246
        PK18H020  C2018 04 18.94372 15 39 29.59 -13 50 21.7                qEH093246
        PK18H020  C2018 04 18.94594 15 39 29.54 -13 50 22.5                qEH093246
        PK18H020  C2018 04 18.94676 15 39 29.51 -13 50 23.2                qEH093246
        PK18H020  C2018 04 18.95832 15 39 29.18 -13 50 23.0                qEH093246
        PK18H020  C2018 04 18.96028 15 39 29.15 -13 50 25.5                qEH093246
        PK18H020  C2018 04 18.96104 15 39 29.16 -13 50 24.3                qEH093246
        PK18H020  C2018 04 18.96315 15 39 29.08 -13 50 24.5                qEH093246
        PK18H020 KC2018 04 19.00056 15 39 27.94 -13 50 29.0          19.4 RoEH093K88
        PK18H020 KC2018 04 19.00381 15 39 27.85 -13 50 29.3          19.2 RoEH093K88
        PK18H020 KC2018 04 19.00706 15 39 27.74 -13 50 29.4          19.1 RoEH093K88
        PK18H020 KC2018 04 19.03109 15 39 27.05 -13 50 32.5          19.3 RqEH093A77
        PK18H020 KC2018 04 19.05278 15 39 26.37 -13 50 35.5          19.4 RqEH093A77
        PK18H020 KC2018 04 19.05704 15 39 26.44 -13 50 35.1          19.9 GUEH093Z84
        PK18H020 KC2018 04 19.06147 15 39 26.11 -13 50 36.8          18.7 RSEH093118
        PK18H020 KC2018 04 19.06735 15 39 26.11 -13 50 36.5          19.8 GUEH093Z84
        PK18H020 KC2018 04 19.07447 15 39 25.84 -13 50 39.1          19.2 RqEH093A77
        PK18H020 KC2018 04 19.07484 15 39 25.70 -13 50 38.5          18.7 RSEH093118
        PK18H020 KC2018 04 19.07789 15 39 25.79 -13 50 37.9          19.0 GUEH093Z84
        PK18H020 KC2018 04 19.35244 15 39 17.99 -13 51 04.3          19.8 RtEH093W85
        PK18H020 KC2018 04 19.35552 15 39 17.91 -13 51 04.8          19.8 RtEH093W85
        PK18H020 KC2018 04 19.35860 15 39 17.82 -13 51 05.1          19.8 RtEH093W85
        PK18H020 dC2018 04 19.41256 15 39 16.39 -13 51 19.5          18.4 RoEH093691
        PK18H020 dC2018 04 19.41619 15 39 16.28 -13 51 19.9          18.6 RoEH093691
        PK18H020 dC2018 04 19.41983 15 39 16.17 -13 51 20.0          18.5 RoEH093691
        PK18H020  C2018 04 20.00954 15 38 59.60 -13 52 35.3          20.6 VSEH093033
        PK18H020  C2018 04 20.01063 15 38 59.57 -13 52 35.6          20.9 VSEH093033
        PK18H020  C2018 04 20.01172 15 38 59.55 -13 52 35.6          20.6 VSEH093033
        PK18H020  C2018 04 20.01301 15 38 59.52 -13 52 36.1          20.7 VSEH093033
        PK18H020  C2018 04 20.01410 15 38 59.48 -13 52 35.8          20.8 VSEH093033
        PK18H020  C2018 04 20.01520 15 38 59.46 -13 52 36.4          20.7 VSEH093033
        PK18H020 KC2018 04 20.03971 15 38 58.68 -13 52 38.5          18.5 RqEH093A77
        PK18H020 KC2018 04 20.05798 15 38 58.17 -13 52 40.4                vEH093L06
        PK18H020  C2018 04 20.06097 15 38 58.00 -13 52 42.2          19.8 VSEH093033
        PK18H020  C2018 04 20.06206 15 38 57.98 -13 52 42.3          19.8 VSEH093033
        PK18H020 KC2018 04 20.06230 15 38 57.96 -13 52 41.6          18.6 RqEH093A77
        PK18H020  C2018 04 20.06316 15 38 57.92 -13 52 42.1          19.7 VSEH093033
        PK18H020  C2018 04 20.06435 15 38 57.93 -13 52 42.0          19.6 VSEH093033
        PK18H020  C2018 04 20.06544 15 38 57.90 -13 52 42.2          19.5 VSEH093033
        PK18H020  C2018 04 20.06653 15 38 57.83 -13 52 42.3          19.2 VSEH093033
        PK18H020 KC2018 04 20.08472 15 38 57.33 -13 52 44.1          18.8 VvEH093L06
        PK18H020 KC2018 04 20.08489 15 38 57.25 -13 52 44.5          18.8 RqEH093A77
        PK18H020 KC2018 04 20.09142 15 38 57.23 -13 52 44.4          19.1 RqEH093J22
        PK18H020 KC2018 04 20.09720 15 38 57.09 -13 52 45.1          18.8 RqEH093J22
        PK18H020 KC2018 04 20.10296 15 38 56.91 -13 52 46.3          19.0 RqEH093J22
        PK18H020 KC2018 04 20.11145 15 38 56.51 -13 52 47.9                vEH093L06
        PK18H020  C2018 04 20.40876 15 38 47.80 -13 53 23.7          18.2 GUEH093I52
        PK18H020  C2018 04 20.41496 15 38 47.61 -13 53 24.8          18.3 GUEH093I52
        PK18H020  C2018 04 20.42084 15 38 47.44 -13 53 25.4          18.4 GUEH093I52
        PK18H020  C2018 04 20.43195 15 38 47.04 -13 53 26.7          18.1 GUEH093I52
        PK18H020 KC2018 04 20.95455 15 38 31.78 -13 54 33.2          18.7 RuEH093557
        PK18H020 KC2018 04 20.95856 15 38 31.65 -13 54 32.4          18.6 VqEH093595
        PK18H020 KC2018 04 20.96008 15 38 31.60 -13 54 33.9          18.7 RuEH093557
        PK18H020 KC2018 04 20.96616 15 38 31.42 -13 54 34.4          18.7 RuEH093557
        PK18H020 KC2018 04 20.96730 15 38 31.38 -13 54 33.9                qEH093595
        PK18H020 KC2018 04 21.20175 15 38 24.26 -13 54 54.9          19.1  qEH093I47
        PK18H020 KC2018 04 21.22830 15 38 23.40 -13 54 57.6          19.0  qEH093I47
        PK18H020 KC2018 04 21.25431 15 38 22.53 -13 55 00.8          19.0  qEH093I47
        PK18H020 KC2018 04 21.28985 15 38 21.45 -13 55 13.8          19.3 RqEH093850
        PK18H020 KC2018 04 21.30344 15 38 21.01 -13 55 16.0          19.0 RqEH093850
        PK18H020 KC2018 04 21.31791 15 38 20.56 -13 55 19.3          19.0 RqEH093850
        PK18H020  C2018 04 21.36466 15 38 19.14 -13 55 22.8          18.6 GUEH093V06
        PK18H020  C2018 04 21.36953 15 38 19.01 -13 55 23.2                UEH093V06
        PK18H020  C2018 04 21.37440 15 38 18.85 -13 55 23.9                UEH093V06
        PK18H020  C2018 04 21.37928 15 38 18.68 -13 55 24.5          18.5 GUEH093V06
        PK18H020  C2018 04 21.38993 15 38 18.04 -13 55 18.2          19.9 RtEH093W85
        PK18H020  C2018 04 21.39183 15 38 17.99 -13 55 18.2          19.8 RtEH093W85
        PK18H020  C2018 04 21.39373 15 38 17.92 -13 55 18.6          19.8 RtEH093W85
        PK18H020  C2018 04 21.39561 15 38 17.87 -13 55 18.9          19.7 RtEH093W85
        PK18H020  C2018 04 21.39751 15 38 17.81 -13 55 19.0          19.8 RtEH093W85
        PK18H020  C2018 04 21.39940 15 38 17.74 -13 55 19.7          19.7 RtEH093W85
        PK18H020 KC2018 04 21.93201 15 38 01.56 -13 56 34.0          18.8 RqEH093585
        PK18H020 KC2018 04 21.93352 15 38 01.47 -13 56 34.7          19.0 RqEH093585
        PK18H020 KC2018 04 21.93502 15 38 01.46 -13 56 34.9          19.0 RqEH093585
        PK18H020 KC2018 04 21.93547 15 38 01.49 -13 56 34.4          18.5 RqEH093215
        PK18H020 KC2018 04 21.93654 15 38 01.35 -13 56 35.2          19.1 RqEH093585
        PK18H020 KC2018 04 21.93675 15 38 01.45 -13 56 34.9          18.5 RqEH093215
        PK18H020 KC2018 04 21.93734 15 38 01.34 -13 56 35.1          19.0 RqEH093585
        PK18H020 KC2018 04 21.93804 15 38 01.41 -13 56 35.4          18.9 RqEH093215
        PK18H020 KC2018 04 21.93806 15 38 01.37 -13 56 35.2          18.9 RqEH093585
        PK18H020 KC2018 04 21.94147 15 38 01.22 -13 56 35.6          18.9 RqEH093585
        PK18H020 KC2018 04 21.94263 15 38 01.15 -13 56 37.1          18.9 RqEH093585
        PK18H020 KC2018 04 22.01525 15 37 58.80 -13 56 44.5          18.8 RqEH093A77
        PK18H020 KC2018 04 22.03694 15 37 58.10 -13 56 48.3          18.7 RqEH093A77
        PK18H020 KC2018 04 22.05863 15 37 57.36 -13 56 50.8          18.9 RqEH093A77
        PK18H020 HC2018 04 24.43467 15 36 38.15 -14 01 42.3          18.6 RoEH093691
        PK18H020 HC2018 04 24.44565 15 36 37.75 -14 01 43.2          18.9 RoEH093691
        PK18H020 HC2018 04 24.45663 15 36 37.33 -14 01 45.2          18.7 RoEH093691
        PK18H020  C2018 04 25.42138 15 36 03.10 -14 03 45.9          19.3 GUEH093I52
        PK18H020  C2018 04 25.42903 15 36 02.94 -14 03 45.9          17.6 GUEH093I52
        PK18H020  C2018 04 25.43633 15 36 02.77 -14 03 45.8          18.2 GUEH093I52
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers C. Hoegner,
        B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
    118 Modra.  Observer S. Gajdos.  0.6-m f/5.5 reflector + CCD.
    215 Buchloe.  Observer W. Hasubick.  0.44-m f/4.6 reflector + CCD.
    246 Klet Observatory-KLENOT.  Observers M. Tichy, J. Ticha.  Measurer M. Tichy.
        1.06-m KLENOT Telescope + CCD.
    557 Ondrejov.  Observers M. Masek, H. Kucakova.  Measurer M. Masek.  0.65-m
        f/3.6 reflector + CCD.
    568 Mauna Kea.  Observers R. Wainscoat, C. Wipper, S. Prunet.  Measurers
        R. Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + CCD.
    585 Kyiv comet station.  Observer A. Baransky.  0.7-m f/4 reflector + CCD.
    595 Farra d'Isonzo.  Observers A. Basana, E. Pettarin, F. Piani.  Measurer
        A. Basana.  0.61-m f/4.0 reflector + CCD.
    691 Steward Observatory, Kitt Peak.  Observers R. S. McMillan, A. F. Tubbiolo.
        0.9-m f/3 reflector + CCD.
    850 Cordell-Lorenz Observatory, Sewanee.  Observers D. T. Durig, A. G. Vaughn.
        0.3-m f/7.6 Schmidt-Cassegrain + CCD.
    A77 Observatoire Chante-Perdrix, Dauban.  Observer J.-F. Soulier.  0.20-m f/4
        Newtonian reflector + CCD.
    C10 Maisoncelles.  Observer J.-F. Soulier.  0.30-m f/3.8 Newtonian reflector
        + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
        M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
        M. Huber, E. Magnier, Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.
        1.8-m Ritchey-Chretien + CCD.
    G40 Slooh.com Canary Islands Observatory.  Observer B. Lutkenhoner.  0.43-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.
    I47 Pierre Auger Observatory, Malargue.  Observer M. Masek.  0.3-m f/10
        reflector + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers E. J. Christensen,
        B. M. Africano, G. J. Leonard.  Measurers B. M. Africano,
        E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
        R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.
        1.0-m reflector + CCD.
    J22 Tacande Observatory, La Palma.  Observer K. Hills.  0.5-m f/2.9 astrograph
        + CCD.
    K88 GINOP-KHK, Piszkesteto.  Observer A. Bodi.  Measurer K. Sarneczky.  0.60-m
        Schmidt + CCD.
    L06 Sormano 2 Observatory, Bellagio Via Lattea.  Observer G. Ventre.
        Measurers P. Sicoli, G. Ventre.  0.28-m f/10 reflector + CCD.
    P93 Space Tracking and Communications Center, JAXA.  Observers S. Urakawa,
        T. Fujiwara.  1.0-m f/3.0 reflector + CCD.
    V06 Catalina Sky Survey-Kuiper.  Observer E. J. Christensen.  Measurers
        E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
        R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman,
        F. C. Shelly.  1.55-m reflector + CCD.
    W85 Cerro Tololo-LCO A.  Observers D. Bloom, E. Siemers, I. Welzel, L. Belli,
        P. Breitenstein, M. Dahlhaus.  1.0-m Ritchey-Chretien + CCD.
    Z84 Calar Alto-Schmidt.  Observer E. Schwab.  Measurers E. Schwab, D. Koschny,
        M. Micheli.  0.8-m f/3 Schmidt + CCD.
    
    Orbital elements:
        P/2018 H2 (PANSTARRS)
    Epoch 2018 Feb. 11.0 TT = JDT 2458160.5
    T 2018 Jan. 23.49166 TT                                 MPCW
    q   2.0271057            (2000.0)            P               Q
    n   0.10662334     Peri.  120.24402     -0.98182360     +0.14735953
    a   4.4045463      Node    68.45533     -0.18537685     -0.87975249
    e   0.5397697      Incl.    7.38866     +0.04071665     -0.45201851
    P   9.24
    From 121 observations 2017 Nov. 17-2018 Apr. 25, mean residual 0".4.
    
        P/2018 H2 (PANSTARRS)
    Epoch 2027 Mar. 16.0 TT = JDT 2461480.5
    T 2027 Mar. 16.10168 TT                                 MPCW
    q   2.0352602            (2000.0)            P               Q
    n   0.10618063     Peri.  119.38544     -0.98600170     +0.11611476
    a   4.4167809      Node    67.50280     -0.15750216     -0.88412996
    e   0.5391983      Incl.    7.44152     +0.05471485     -0.45258323
    P   9.28
    From 121 observations 2017 Nov. 17-2018 Apr. 25, mean residual 0".4.
    
        P/2018 H2 (PANSTARRS)
    Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
    T 2018 Jan. 23.48601 TT                                 MPCW
    q   2.0270924            (2000.0)            P               Q
    n   0.10659713     Peri.  120.24189     -0.98183092     +0.14730991
    a   4.4052685      Node    68.45457     -0.18533295     -0.87976076
    e   0.5398482      Incl.    7.38877     +0.04073998     -0.45201857
    P   9.25
    From 121 observations 2017 Nov. 17-2018 Apr. 25, mean residual 0".4.
    
    Ephemeris:
        P/2018 H2 (PANSTARRS)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    2018 03 27    15 41 58.6 -12 56 02   1.3203  2.1008   129.5    21.5        19.9
    ...
    2018 04 11    15 42 13.6 -13 33 08   1.2458  2.1388   143.9    16.0        19.6
    ...
    2018 04 19    15 39 27.9 -13 50 22   1.2217  2.1618   152.3    12.5        19.5
    ...
    2018 04 25    15 36 18.5 -14 02 47   1.2121  2.1803   158.7     9.6        19.3
    2018 04 26    15 35 42.5 -14 04 50   1.2113  2.1834   159.8     9.1        19.3
    2018 04 27    15 35 05.4 -14 06 53   1.2106  2.1866   160.9     8.7        19.3
    ...
    2018 05 03    15 31 03.3 -14 19 17   1.2116  2.2064   167.4     5.7        19.2
    ...
    2018 05 11    15 25 08.4 -14 36 21   1.2261  2.2341   175.3     2.1        19.0
    ...
    2018 05 26    15 14 31.0 -15 12 38   1.2950  2.2900   165.6     6.3        19.4
    
    Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-H93
    

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