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The Minor Planet Observer
and
Palmer Divide Observatory

2007 Shoemaker Grant Recipient

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9739 Powell

MPO Home Period (h): 18.2 (36.5) ± 0.1
Lightcurves Amplitude (mag): 0.09 ± 0.02
Date Range (mm/dd): 2006  Sep 25 - Oct 01
Data Points: 334
Equipment: 0.35m SCT, FLI-1001E
Discovered: Sep 26, 1987  C.S. Shoemaker at Palomar
Previous Designations: 1987 SH7, 1994 AS1
Family/Group: Hungaria
Taxonomic Class: Assumed: E
H (absolute mag): MPCORB: 13.7
Diameter (km) / albedo: Assumed: 4.4 / 0.3
SM Axis (AU): 1.9397
Inclination (deg): 18.6743
Eccentricity: 0.0789
Published: Minor Planet Bul. 34, 8-10
NOTES: The plot shows the data phased to the longer period of 36.5 hours. The low amplitude makes it possible that the monomodal curve for 18.2 hours is also correct.  Observations at a future apparition may help resolve the ambiguity, providing the amplitude of the curve is larger and/or higher quality data are available.

 

Contents © 2006 Brian D. Warner / Palmer Divide Observatory

 

 

 

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