(1558) = 0001558

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

Former Status
53 observations from 1913 Jan. 7 to 2006 Mars 22
Last observed on 2006 Mars 22

2006-03-27T03:51:40.95 2006-03-27T04:38:02.62 2006-03-27T05:25:28.95


AirMass


Relative Extinction


Sky Background

Fig. 1 - From 2006-03-27T03:28:31.00 to 2006-03-27T05:49:37.00

01558         C2006 03 27.16089 10 19 23.66 +21 48 21.6          15.6 V      H85
01558         C2006 03 27.19309 10 19 22.75 +21 48 25.0                      H85
01558         C2006 03 27.22603 10 19 21.82 +21 48 28.5                      H85
Fig. 2 - Measures


Fig. 3 - Fit to Ephemerid with Offset removed
One vertical Tick = 1 arcsec
Sigma Fit (arcsec): RA=0.11 DC=0.21
Offset O-C (arcsec): RA=+0.16 DC=+0.52
Along Orbit and Transversal: LO=-0.03 TR=-0.50
Means Motion ("/h): RA=-16.39 DC=+4.41

New orbital Elements

Parameter Unit Value 
Ascending Node      (°)  111.08505
Inclination         (°)   10.47768
Semi-major Axis    (AU)    3.2221128
Eccentricity               0.0390762
Perihelia Argument  (°)  284.47365
Period             (yr)    5.78
Absolute Magnitude        10.2
Diameter Range     (km)   23.7-53.8

Follow-Up

Formerly Unidentified Observations of (1558)
20060327  H85   -0.2 +0.2  
20060327  H85   -0.1 +0.1  
20060327  H85   +0.0 +0.1  
20060329  704   +0.7 +0.1  
20060329  704  (-2.8 +1.5) 


20060331  699   +0.1 +0.3  
20060331  699   +0.1 +0.2  
20060331  699   -0.1 +0.3  
20060331  699   +0.2 +0.2  
20060523  703   -0.5 +0.1  


20060523  703   -0.1 +0.0  
20060523  703   -0.3 +0.1  
20060523  703   +0.0 +0.1
Further observations? None needed at this time.

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Updated on 2006/05/29 02:47