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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01730214232371846 1.8747e-07  
a 2.97481910487527 4.8182e-08 au
q 2.923348361335402 5.9082e-07 au
i 10.06546745870772 2.0815e-05 deg
node 150.2188679447093 9.0584e-05 deg
peri 108.7495403802622 0.0012229 deg
M 336.040261301149 0.001234 deg
tp 2457525.229403793768
(2016-May-16.72940379)
0.0064262 JED
period 1874.084935989292
5.13
4.553e-05
1.247e-07
d
yr
n .1920937483070708 4.6669e-09 deg/d
Q 3.026289848415139 4.9015e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      7354 days (20.13 yr)  
   first obs. used      1995-04-25  
   last obs. used      2015-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .66546  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 15:26:46  

Additional Information
 Earth MOID = 1.92228 au 
 Jupiter MOID = 1.99384 au 
 T_jup = 3.238 
[ 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 15.4 mag n/a MPO338368  

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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