Nakano Note (Nakano wa Kangaeru noda) NK 2426 C/2010 M1 (Gibbs)

The following improved parabolic orbit, by S. Nakano, are from 15 observations 2010 June 22 and June 23. The comet was observed in only two nights. The mean residual is +/- 0.32 arc second. The same orbit was published on HICQ 2010. Although ephemeris was published on every HICQ after HICQ 2010, but the comet was not detected. T = 2012 Feb. 2.90729 +/- 202.1 (m.e.) TT Peri. = 265.65419 +/- 13.4 Node = 82.48262 +/- 13.7 (2000.0) Inc. = 77.51368 +/- 35.4 q = 2.2674920 +/- 1.260 AU e = 1.0 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100622 G96 0.1+ 0.1+ 100623 G96 0.1+ 0.0 100622 G96 0.1- 0.1+ 100622 G96 0.1- 0.2+ 100623 G96 0.4- 0.3+ 100622 G96 0.2- 0.1- 100622 G96 0.4+ 0.6+ 100623 291 0.4+ 0.8- 100622 G96 0.4+ 0.4- 100622 G96 0.2- 0.5- 100623 291 0.2- 0.0 100622 G96 0.4+ 0.1+ 100622 G96 0.2- 0.2- 100622 G96 0.5- 0.0 100623 G96 0.1+ 0.6+ ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Late edition Syuichi Nakano 2010 July 11

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