The Lightcurve and Colors of Unusual Minor Planet 1996 PW

Details The Lightcurve and Colors of Unusual Minor Planet 1996 PW The Lightcurve and Colors of Unusual Minor Planet 1996 PW

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998icar..132..418d&link_type=abstract

Icarus, Volume 132, Issue 2, pp. 418-430.

Physics

13

Scientific paper

Minor Planet 1996 PW is unusual in having the orbital characteristics of a long period comet but showing no sign of cometary activity around the time of its discovery. We present optical data which reveals a double peaked lightcurve (period 35.44 +/- 0.02 hrs and amplitude 0.44 +/- 0.03 magnitudes) and VRIJHK photometry which shows colors (V - R = 0.56 +/- 0.04, V - I = 1.03 +/- 0.06, V - J = 1.80 +/- 0.05, V - H = 2.19 +/- 0.05, and V - K = 2.32 +/- 0.05) typical of D type asteroids and suspected bare comet nuclei. A low signal to noise reflectance spectrum in the K band shows a flat continuum with no evidence for spectral features. Image profiles from co-added frames in the R band indicate no apparent cometary activity with an implied upper limit to the dust production rate of 0.03 kg s^-1.

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