Palmer Divide Observatory Lightcurve 4868 Knushevia (2011)


Lightcurves

	4868 Knushevia (2011)
	MPC Designation:	1989 UN2
Lightcurves	Period (h):	4.717 ą 0.001
	Amplitude (mag):	0.12 ą 0.01
	Equipment:	Filter: C MagBand: R Telescope: 0.35m f/9.1 SCT Camera: FLI 1001E Exposure: 300
	Obs. Details	Date E Mag Phase PABL PABB 2011-10-22 07:00 16.22 11.3 37.3 -15.2 2011-10-23 07:00 16.22 11.1 37.3 -15.4 2011-10-24 07:00 16.21 10.9 37.3 -15.6 2011-10-31 07:00 16.22 10.7 37.2 -16.7
	Data Points:	188

	Discovered:	1989-10-27 Palomar E. F. Helin
	Family/Group:	Hungaria
	Taxonomic Class:	ES (Assumed)
	Published:	MPB pending

	NOTES:	Unless otherwise stated, the "Reduced Magnitudes" in the plots are Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119) Follow-up to 2009 and 2010. Collaboration with David Higgins (Hunters Hill Observatory, AUSTRALIA) and Petr Pravec (Astronomical Institute, CZECH REPUBLIC). The 2011 solution is ambiguous, with one near 3.4 h possible. The period from none of the three apparitions agrees with the other two. The reason is unknown, though tumbling might be one possibility.
	Contents Š 2011 Brian D. Warner / Palmer Divide Observatory

The Minor Planet Observer and Palmer Divide Observatory