Comet P/2006 Q2 = 2012 R1 (LONEOS)

G. V. Williamsは、小惑星センターに送信された2組の一夜観測がP/2006 Q2である
ことを確認した。

観測位置は次のとおり、

     2012 UT             R.A. (2000) Decl.       Mag.   Observer
     Sept.11.94094    0 54 54.48   +23 59 09.2   20.1   Nevski
          11.95116    0 54 55.01   +23 59 09.6   20.0     "
          11.96140    0 54 55.60   +23 59 10.2   20.2     "
          11.97162    0 54 56.13   +23 59 10.3   20.1     "
          12.31411    0 55 17.74   +23 59 32.9   19.2   Holmes
          12.31991    0 55 18.05   +23 59 33.6   19.4     "
          12.32558    0 55 18.34   +23 59 33.7   19.3     "
          12.33080    0 55 18.64   +23 59 34.0   19.4     "

V. Nevski, D. Ivanov, A. Novichonok, and I. Kondratenko (ISON-Kislovodsk
  Observatory).  0.4-m f/3 reflector.
R. Holmes (Ashmore, IL, U.S.A.).  0.61-m f/4 astrograph.  Measured by
  T. Vorobjov, L. Buzzi, and S. Foglia.

MPC 65939のB. G. Marsdenの予報に対し、Delta(T)は、+0.80 dayであった。また、2012
ICQ Comet Handbook (P10)の中野主一氏の予報に対し、Delta(T)は、+0.45 dayであった。

連結軌道要素、位置推算表は次のとおり、

Orbital elements:
    P/2006 Q2 = 2012 R1 (LONEOS)
Epoch 2012 Aug. 21.0 TT = JDT 2456160.5
T 2012 Aug. 22.79025 TT                                 MPC
q   1.3361517            (2000.0)            P               Q
n   0.16540605     Peri.   97.19375     +0.94821649     +0.30607236
a   3.2867635      Node   245.01358     -0.31562639     +0.87804899
e   0.5934750      Incl.    5.37352     -0.03557343     +0.36789901
P   5.96
From 153 observations 2006 Aug. 29-2012 Sept. 12, mean residual 0".46.

    P/2006 Q2 = 2012 R1 (LONEOS)
Epoch 2006 Sept. 22.0 TT = JDT 2454000.5
T 2006 Sept. 2.89821 TT                                 MPC
q   1.3379031            (2000.0)            P               Q
n   0.16522803     Peri.   96.85415     +0.94767199     +0.30773089
a   3.2891239      Node   245.25194     -0.31717893     +0.87734117
e   0.5932342      Incl.    5.36847     -0.03626742     +0.36820398
P   5.97
From 153 observations 2006 Aug. 29-2012 Sept. 12, mean residual 0".46.

Ephemeris:
    P/2006 Q2 (LONEOS)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1
2012 08 14    00 08 07.4 +18 53 02   0.4424  1.3399   129.8    35.5  19.0
...
2012 08 29    00 36 08.3 +22 38 09   0.4145  1.3380   135.7    31.8  18.9
...
2012 09 06    00 47 54.3 +23 40 47   0.4079  1.3460   139.9    28.8  18.8
...
2012 09 12    00 54 58.1 +23 59 20   0.4068  1.3560   143.8    26.0  18.9
2012 09 13    00 55 59.6 +24 00 04   0.4069  1.3580   144.4    25.5  18.9
2012 09 14    00 56 58.6 +24 00 07   0.4072  1.3601   145.1    25.0  18.9
...
2012 09 20    01 02 00.1 +23 46 54   0.4108  1.3744   149.6    21.7  18.9
...
2012 09 28    01 06 40.2 +22 56 46   0.4221  1.3983   156.1    16.9  19.1
...
2012 10 13    01 11 19.3 +20 13 34   0.4662  1.4564   167.5     8.5  19.5

Computer: Williams

(CBET 3219、MPEC 2012-R28)