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171153 Allanrahill (2005 GL81)
Classification: Main-belt Asteroid          SPK-ID: 2171153
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01749744256326858 2.3057e-07  
a 2.977371681864088 6.1808e-08 AU
q 2.925275291871169 7.022e-07 AU
i 10.06390252136138 3.0379e-05 deg
node 150.2169988148517 0.00019265 deg
peri 105.8969177289802 0.0012612 deg
M 262.0853461345083 0.0012571 deg
tp 2457510.879473121261
(2016-May-02.37947312)
0.0065581 JED
period 1876.497572835812
5.14
5.8432e-05
1.6e-07
d
yr
n .1918467709265184 5.9739e-09 deg/d
Q 3.029468071857008 6.2889e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      6387 days (17.49 yr)  
   first obs. used      1995-04-25  
   last obs. used      2012-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .73094  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 12:46:09  

Additional Information
 Earth MOID = 1.92838 AU 
 T_jup = 3.237 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO241227  

171153 Allanrahill           Discovered 2005 Apr. 10 by A. Lowe at RAS Observatory, Mayhill.
Allan Rahill (b. 1958) is a meteorologist at the Canadian Meteorological Centre, an amateur astronomer and accomplished optician. His astronomy forecast models feed the Clear Sky Charts, a primary planning tool for observers across North America.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091004/MPCPages.arcLast Updated: 2009-10-06

[ show close-approach data ]
Alternate Designations
 2005 GL81 = 2000 HQ35 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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