(91156) = 91156

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

Former Status
70 observations from 1998 Jan. 1 to 2004 Oct. 7
Last observed on 2004 Oct. 7

2005-12-01T04:19:03.43 2005-12-01T04:50:49.07 2005-12-01T05:23:41.07


AirMass


Relative Extinction


Sky Background

Fig. 1 - From 2005-12-01T04:03:18.00 to 2005-12-01T05:40:33.00

91156         C2005 12 01.17990 04 17 56.79 +37 19 44.0          20.5 V      H85
91156         C2005 12 01.20196 04 17 55.43 +37 19 40.5                      H85
91156         C2005 12 01.22478 04 17 54.12 +37 19 38.1                      H85
Fig. 2 - Measures


Fig. 3 - Fit to Ephemerid with Offset removed
One vertical Tick = 1 arcsec
Sigma Fit (arcsec): RA=0.12 DC=0.36
Offset O-C (arcsec): RA=+0.26 DC=-0.14
Along Orbit and Transversal: LO=-0.29 TR=+0.14
Means Motion ("/h): RA=-29.57 DC=-5.48

New orbital Elements

Parameter Unit Value 
Ascending Node      (°)  334.28793
Inclination         (°)   11.31218
Semi-major Axis    (AU)    3.2017124
Eccentricity               0.0830605
Perihelia Argument  (°)  295.62995
Period             (yr)    5.73
Absolute Magnitude        14.1
Diameter Range     (km)    3.9-8.9

Follow-Up

Formerly Unidentified Observations of (91156)
20051201  H85   +0.3 -0.1  


20051201  H85   -0.2 -0.5  


20051201  H85   +0.4 +0.4
Further observations? None needed at this time.

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Updated on 2006/01/23 18:16