2001 OU21 = K01O21U

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

Former Status
173 observations from 2001 Jan. 1 to 2005 Dec. 5
Last observed on 2005 Dec. 5

2005-12-25T04:16:39.33 2005-12-25T04:37:51.40
2005-12-25T04:59:01.11 2005-12-25T05:20:07.60


AirMass


Relative Extinction


Sky Background

Fig. 1 - From 2005-12-25T04:06:44.00 to 2005-12-25T05:31:06.00

     K01O21U  C2005 12 25.17823 06 55 50.03 +30 46 38.7          18.6 V      H85
     K01O21U  C2005 12 25.20765 06 55 47.66 +30 46 38.6                      H85
     K01O21U  C2005 12 25.22231 06 55 46.48 +30 46 38.2                      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=+0.21 DC=-0.34
Along Orbit and Transversal: LO=-0.25 TR=+0.34
Means Motion ("/h): RA=-43.25 DC=-0.47

New orbital Elements

Parameter Unit Value 
Ascending Node      (°)  327.91649
Inclination         (°)    5.72675
Semi-major Axis    (AU)    2.3468479
Eccentricity               0.2495201
Perihelia Argument  (°)   42.38598
Period             (yr)    3.60
Absolute Magnitude        15.6
Diameter Range     (km)    2.0-4.5

Follow-Up

Formerly Unidentified Observations of (124171)
20051224  704   -0.6 -0.5  
20051224  704   +0.0 +0.5  
20051224  704   -0.2 +0.2  
20051224  704   -0.4 +0.2  
20051224  704   -0.1 -0.3  
20051225  H85   +0.0 -0.5  
20051225  H85   +0.0 -0.2  


20051225  H85   +0.1 -0.3  
20051229  704   +0.3 +0.6  
20051229  704   +0.2 +0.0  
20051229  704   +0.1 +0.4  
20051229  704   +0.3 +0.2  
20051229  704   -0.1 +0.6  
20060107  704   +0.0 +0.2  


20060107  704   +0.1 +0.1  
20060107  704   -0.2 +0.0  
20060107  704   +0.4 +0.2  
20060107  704   +0.5 +0.4  
20060110  691   +0.3 +0.1  
20060110  691   +0.3 +0.1  
20060110  691   +0.2 +0.0
Further observations? None needed at this time.

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Updated on 2006/04/10 07:45