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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01785104419745637 5.107e-08  
a 2.975038412101677 2.9565e-08 au
q 2.92193086991812 1.5334e-07 au
i 10.06612378139807 1.0039e-05 deg
node 150.1976380349237 3.8641e-05 deg
peri 112.3947401683786 0.00035996 deg
M 279.5820470864349 0.00036151 deg
tp 2459419.185389545125
(2021-Jul-23.68538955)
0.0018844 TDB
period 1874.292179486951
5.13
2.7939e-05
7.649e-08
d
yr
n .1920725081926889 2.8631e-09 deg/d
Q 3.028145954285235 3.0093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      307  
   data-arc span      9050 days (24.78 yr)  
   first obs. used      1995-04-25  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61375  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:26:02  

Additional Information
 Earth MOID = 1.92128 au 
 Jupiter MOID = 1.99375 au 
 T_jup = 3.238 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO422650  
diameter diameter 3.571 km 0.430 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.126   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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