(6561) = 0006561

ORIGIN  = 'H85 Silver Spring'
TELESCOP= '0.45-m f/7.25 Ritchey-Chretien + 3072x2054 CCD'
OBSERVER= 'K. Levin'
MEASURER= 'J. C. Pelle'

Former Status
280 observations from 1984 Jan. 7 to 2006 Apr. 18
Last observed on 2006 Apr. 18

2006-04-16T02:41:36.77 2006-04-16T03:41:34.23


AirMass


Relative Extinction


Sky Background

Fig. 1 - From 2006-04-16T02:11:46.00 to 2006-04-16T04:11:23.00

06561         C2006 04 16.11223 11 07 09.15 +10 23 23.8          18.3 V      H85
06561         C2006 04 16.15387 11 07 08.13 +10 23 35.2                      H85
Fig. 2 - Measures


Fig. 3 - Fit to Ephemerid with Offset removed
One vertical Tick = 1 arcsec
Sigma Fit (arcsec): RA=0.01 DC=0.13
Offset O-C (arcsec): RA=-0.67 DC=-0.09
Along Orbit and Transversal: LO=+0.48 TR=+0.10
Means Motion ("/h): RA=-15.06 DC=+11.41

New orbital Elements

Parameter Unit Value 
Ascending Node      (°)  163.37176
Inclination         (°)   13.66154
Semi-major Axis    (AU)    2.5888547
Eccentricity               0.1854292
Perihelia Argument  (°)  177.06247
Period             (yr)    4.17
Absolute Magnitude        13.6
Diameter Range     (km)    5.0-11.2

Follow-Up

Formerly Unidentified Observations of (6561)
20060420  704   +1.0 -0.9  
20060420  704   +1.0 +0.3  
20060420  704   +0.7 +0.7  
20060420  704   +0.4 +0.3  


20060420  704   -0.5 +0.9  
20060422  644   -0.5 -0.1  
20060422  644   -0.6 +0.0  
20060422  644   -0.5 +0.0  


20060512  644   -0.4 +0.0  
20060512  644   -0.5 +0.1  
20060512  644   -0.5 +0.0
Further observations? None needed at this time.

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Updated on 2006/05/20 10:32