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The Minor Planet Observer
and
Palmer Divide Observatory

7816 Hanoi (2001)

MPC Designation: 1987 YA
Lightcurves Period (h): 5.17 0.01
Amplitude (mag): 0.77 0.02
Equipment:

 

Filter: C
MagBand: R
Telescope: 0.5m f/8.1 R/C
Camera: FLI KAF-1001E
Exposure: 70

 

Obs. Details

Date              E Mag   Phase  PABL   PABB
2001-11-10 07:00  14.94    1.6   46.1   -0.3
2001-11-11 07:00  15.00    2.3   46.3   -0.3

Data Points: 181
Discovered: 1987-12-18  Ayashi  M. Koishikawa
Family/Group: Mars-crosser
Taxonomic Class: S (Assumed)
Published: MPB 38, 63-65
NOTES: Unless otherwise stated, the "Reduced Magnitudes" in the plots are Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119)

MPB 29, 27-28: P = 5.18, A = 0.72, U = 2+. Remeasuring images to calibrate sessions using 2MASS to BVRI conversion improved the quality of the solution somewhat.

 

Contents 2011 Brian D. Warner / Palmer Divide Observatory

 

 

 

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