1999 TR189 = J99TI9R

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

Former Status
82 observations from 1999 Oct. 12 to 2005 Dec. 8
Last observed on 2005 Dec. 8
Uncertainty: RA=0.3" DC=0"

2005-12-11T02:28:39.29 2005-12-11T03:22:26.50


AirMass


Relative Extinction


Sky Background

Fig. 1 - From 2005-12-11T02:15:27.00 to 2005-12-11T02:33:09.00

     J99TI9R  C2005 12 11.10177 04 27 38.46 +35 52 43.2          19.5 V      H85
     J99TI9R  C2005 12 11.14058 04 27 36.17 +35 52 35.5                      H85
Fig. 2 - Measures


Fig. 3 - Fit to Ephemerid with Offset removed
One vertical Tick = 1 arcsec
Sigma Fit (arcsec): RA=0.03 DC=0.00
Offset O-C (arcsec): RA=+0.05 DC=-0.51
Along Orbit and Transversal: LO=+0.08 TR=+0.50
Means Motion ("/h): RA=-29.88 DC=-8.27

New orbital Elements

Parameter Unit Value 
Ascending Node      (°)  334.33066
Inclination         (°)    9.42765
Semi-major Axis    (AU)    3.1635461
Eccentricity               0.1043960
Perihelia Argument  (°)   56.11272
Period             (yr)    5.63
Absolute Magnitude        14.7
Diameter Range     (km)    3.0-6.8

Follow-Up

Formerly Unidentified Observations of (121446)
20051211  H85   +0.1 -0.4  
20051211  H85   +0.0 -0.4  
20051224  704   -1.1 -0.9  
20051224  704   -0.1 -1.2  


20051224  704   -0.2 -0.3  
20051224  704   +0.0 +0.0  
20051224  704   -0.6 -0.1  
20060107  704   -0.4 +0.7  


20060107  704   +0.8 +0.1  
20060107  704   +0.8 -0.1  
20060107  704   +0.1 +0.7  
20060107  704   +0.9 +0.2
Further observations? None needed at this time.

[MP Home Page]

Updated on 2006/04/08 07:52