[Iaude] MPEC F85: COMET P/2005 JN (Spacewatch)

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Wed Mar 21 19:45:17 EDT 2018


M.P.E.C. 2018-F85                                Issued 2018 Mar. 21, 23:37 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 P/2005 JN = 2018 F2 (Spacewatch)
 
Observations:
    PK18F020*KC2018 03 17.18191 12 55 41.11 +08 48 42.0          20.2 NUEF085J04
    PK18F020 KC2018 03 17.18945 12 55 40.81 +08 48 43.6          20.1 NUEF085J04
    PK18F020 KC2018 03 17.19699 12 55 40.51 +08 48 45.8          20.1 NUEF085J04
    PK18F020 KC2018 03 17.20454 12 55 40.22 +08 48 47.6          20.0 NUEF085J04
    PK18F020  C2018 03 17.34493 12 55 35.33 +08 49 23.7          20.6 NUEF085G96
    PK18F020  C2018 03 17.35009 12 55 35.11 +08 49 25.0          20.4 NUEF085G96
    PK18F020  C2018 03 17.35524 12 55 34.89 +08 49 26.4          20.5 NUEF085G96
    PK18F020  C2018 03 17.36040 12 55 34.75 +08 49 28.0          20.7 NUEF085G96
    PK18F020 KC2018 03 21.91090 12 52 38.24 +09 08 22.4          19.7 NUEF085Z84
    PK18F020 KC2018 03 21.92041 12 52 37.91 +09 08 24.9          19.8 NUEF085Z84
    PK18F020 KC2018 03 21.93003 12 52 37.46 +09 08 26.8          19.6 NUEF085Z84
 
Observer details:
G96 Mt. Lemmon Survey.  Observer A. D. Grauer.  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.
    1.5-m reflector + 10K CCD.
J04 ESA Optical Ground Station, Tenerife.  Observer P. Ruiz.  Measurers
    E. Schwab, M. Micheli, D. Koschny, A. Knoefel, M. Busch.  1.0-m f/4.4
    reflector + 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/2005 JN (Spacewatch)
Epoch 2005 July 9.0 TT = JDT 2453560.5
T 2005 June 20.10761 TT                                 MPCW
q   2.2762877            (2000.0)            P               Q
n   0.15070323     Peri.  153.56275     -0.70999469     +0.68902712
a   3.4972043      Node    70.79322     -0.67030062     -0.59793355
e   0.3491122      Incl.    8.85878     -0.21588104     -0.40953278
P   6.54
>From 33 observations 2005 Apr. 4-2018 Mar. 21, mean residual 0".4.

    P/2005 JN (Spacewatch)
Epoch 2011 Dec. 25.0 TT = JDT 2455920.5
T 2012 Jan. 5.18710 TT                                  MPCW
q   2.2864838            (2000.0)            P               Q
n   0.15030525     Peri.  153.48151     -0.71110402     +0.68790609
a   3.5033750      Node    70.78292     -0.66931295     -0.59904072
e   0.3473483      Incl.    8.85239     -0.21529340     -0.40979925
P   6.56
>From 33 observations 2005 Apr. 4-2018 Mar. 21, mean residual 0".4.

    P/2005 JN (Spacewatch)
Epoch 2018 July 21.0 TT = JDT 2458320.5
T 2018 July 21.83160 TT                                 MPCW
q   2.2777781            (2000.0)            P               Q
n   0.15056153     Peri.  153.33157     -0.71319662     +0.68571702
a   3.4993983      Node    70.75806     -0.66748305     -0.60101566
e   0.3490943      Incl.    8.85933     -0.21404898     -0.41057561
P   6.55
>From 33 observations 2005 Apr. 4-2018 Mar. 21, mean residual 0".4.

    P/2005 JN (Spacewatch)
Epoch 2025 Feb. 14.0 TT = JDT 2460720.5
T 2025 Jan. 30.88647 TT                                 MPCW
q   2.2799537            (2000.0)            P               Q
n   0.15052635     Peri.  152.95778     -0.71762163     +0.68109437
a   3.4999435      Node    70.76109     -0.66357257     -0.60534435
e   0.3485742      Incl.    8.85640     -0.21140162     -0.41190859
P   6.55
>From 33 observations 2005 Apr. 4-2018 Mar. 21, mean residual 0".4.

    P/2005 JN (Spacewatch)
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2018 July 21.92057 TT                                 MPCW
q   2.2777051            (2000.0)            P               Q
n   0.15065061     Peri.  153.35737     -0.71286066     +0.68606703
a   3.4980187      Node    70.76032     -0.66777821     -0.60069259
e   0.3488585      Incl.    8.85899     -0.21424738     -0.41046370
P   6.54
>From 33 observations 2005 Apr. 4-2018 Mar. 21, mean residual 0".4.

Ephemeris:
    P/2005 JN (Spacewatch)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2018 02 19    13 03 50.0 +06 59 45   1.6778  2.4900   136.5    15.8  20.1
...
2018 03 06    13 01 11.8 +07 59 04   1.5373  2.4532   151.1    11.3  19.8
...
2018 03 14    12 57 31.5 +08 34 46   1.4820  2.4347   158.6     8.6  19.7
...
2018 03 20    12 53 54.6 +09 00 40   1.4505  2.4213   163.3     6.8  19.6
2018 03 21    12 53 14.9 +09 04 45   1.4461  2.4191   164.0     6.5  19.6
2018 03 22    12 52 34.4 +09 08 46   1.4420  2.4170   164.6     6.3  19.6
...
2018 03 28    12 48 16.8 +09 30 40   1.4226  2.4043   166.5     5.6  19.6
...
2018 04 05    12 42 12.1 +09 52 00   1.4109  2.3882   163.9     6.7  19.5
...
2018 04 20    12 31 32.1 +09 58 40   1.4308  2.3606   151.1    11.9  19.5

Gareth V. Williams           (C) Copyright 2018 MPC           M.P.E.C. 2018-F85



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