G. V. Williams (小惑星センター)の通報によると、8月8.5日UT、Pan-STARRS1チームが
Haleakalaの1.8-m反射望遠鏡で観測(リストされた観測者は: J. Bulger, T. Lowe, A. Schultz,
と M. Willman)された小惑星状天体と9月6.1日、M. AltmannとT. PrustiがCerro Paranalの
2.6-m f/5.5 反射望遠鏡で得たイメージからP/2008 O2 (IAUC 8963, 8965参照)の検出を確認した。
MPC 94681のG. V. Williamsの予報に対して、Delta(T)は、-0.52 dayであった。

検出位置は次のとおり、

     2018 UT             R.A. (2000) Decl.       Mag.   Observer
     Aug.  8.49618   23 22 21.31   - 0 12 55.5   22.4   Bulger
           8.51981   23 22 20.73   - 0 12 55.3   22.2     "
           8.53163   23 22 20.45   - 0 12 55.4   22.4     "
     Sept. 6.12801   23 06 56.03   - 0 43 46.0   21.9   Altmann
           6.12921   23 06 55.99   - 0 43 45.7   21.9     "
           6.13042   23 06 55.93   - 0 43 45.8   21.7     "
           6.13162   23 06 55.89   - 0 43 46.0   21.9     "
           6.13283   23 06 55.84   - 0 43 46.4   21.7     "
           6.13404   23 06 55.80   - 0 43 46.3   21.7     "
           6.13528   23 06 55.76   - 0 43 46.3   21.8     "
           6.13648   23 06 55.71   - 0 43 46.7   21.5     "
           6.13890   23 06 55.61   - 0 43 46.6   21.7     "

連結軌道要素と位置推算表は次のとおり、

Orbital elements:
    P/2008 O2 (McNaught)
Epoch 2009 May 9.0 TT = JDT 2454960.5
T 2009 Apr. 21.53056 TT                                 MPCW
q   3.8037672            (2000.0)            P               Q
n   0.10348855     Peri.   27.45406     +0.98963685     +0.10957047
a   4.4930492      Node   325.85999     -0.14196691     +0.84359321
e   0.1534107      Incl.    9.51862     +0.02154777     +0.52568509
P   9.52
From 377 observations 2008 July 28-2018 Sept. 6, mean residual 0".6.

    P/2008 O2 (McNaught)
Epoch 2018 Oct. 9.0 TT = JDT 2458400.5
T 2018 Oct. 19.38163 TT                                 MPCW
q   3.8151372            (2000.0)            P               Q
n   0.10333569     Peri.   26.93620     +0.98857488     +0.11879737
a   4.4974790      Node   325.84389     -0.14980986     +0.84230553
e   0.1517165      Incl.    9.51111     +0.01663462     +0.52574574
P   9.54
From 377 observations 2008 July 28-2018 Sept. 6, mean residual 0".6.

    P/2008 O2 (McNaught)
Epoch 2028 May 29.0 TT = JDT 2461920.5
T 2028 May 21.56959 TT                                  MPCW
q   3.8351852            (2000.0)            P               Q
n   0.10266271     Peri.   27.32190     +0.98916025     +0.11374551
a   4.5171125      Node   325.75139     -0.14554649     +0.84323428
e   0.1509653      Incl.    9.49783     +0.01944759     +0.52537407
P   9.60
From 377 observations 2008 July 28-2018 Sept. 6, mean residual 0".6.

    P/2008 O2 (McNaught)
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5
T 2018 Oct. 19.47278 TT                                 MPCW
q   3.8151253            (2000.0)            P               Q
n   0.10338945     Peri.   26.94563     +0.98859720     +0.11860455
a   4.4959200      Node   325.84553     -0.14965059     +0.84232266
e   0.1514250      Incl.    9.51243     +0.01674133     +0.52576183
P   9.53
From 377 observations 2008 July 28-2018 Sept. 6, mean residual 0".6.

Ephemeris:
    P/2008 O2 (McNaught)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1
2018 08 17    23 18 33.5 -00 15 50   2.8903  3.8213   153.2     6.9  21.6
...
2018 09 01    23 10 06.9 -00 34 26   2.8230  3.8187   169.1     2.9  21.6
...
2018 09 09    23 05 07.8 -00 49 28   2.8128  3.8177   175.2     1.3  21.6
...
2018 09 15    23 01 23.1 -01 02 02   2.8175  3.8170   172.5     2.0  21.6
2018 09 16    23 00 46.3 -01 04 11   2.8193  3.8169   171.6     2.2  21.6
2018 09 17    23 00 09.7 -01 06 20   2.8214  3.8168   170.6     2.5  21.6
...
2018 09 23    22 56 37.3 -01 19 14   2.8400  3.8162   164.4     4.1  21.6
...
2018 10 01    22 52 21.2 -01 35 34   2.8804  3.8157   155.8     6.2  21.6
...
2018 10 16    22 46 26.0 -01 59 14   3.0003  3.8152   139.7     9.7  21.7

(CBET 4554、MPEC 2018-S01)