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229781 Arthurmcdonald (2008 PS1)
Classification: Main-belt Asteroid          SPK-ID: 2229781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08172890194027897 5.3607e-08  
a 3.160130885402988 3.4473e-08 au
q 2.901856858151441 1.5482e-07 au
i 14.04989649331168 3.3679e-06 deg
node 308.4512744139112 2.9575e-05 deg
peri 340.4017524519945 5.5751e-05 deg
M 141.8705525723823 4.9988e-05 deg
tp 2458587.877554667310
(2019-Apr-14.37755467)
0.00028087 TDB
period 2051.899249290983
5.62
3.3576e-05
9.193e-08
d
yr
n .1754472107362947 2.8709e-09 deg/d
Q 3.418404912654536 3.7291e-08 au
  Orbit Determination Parameters
   # obs. used (total)      366  
   data-arc span      6760 days (18.51 yr)  
   first obs. used      2002-07-12  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52461  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:48:59  

Additional Information
 Earth MOID = 1.88916 au 
 Jupiter MOID = 1.83136 au 
 T_jup = 3.154 
[ 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 15.51   n/a MPCxxxxx  
diameter diameter 5.466 km 1.753 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

229781 Arthurmcdonald (2008 PS1)          Discovered 2008-Aug-03 by Casulli, V. S. at Vallemare Borbona
Reference: 20091231/Numbers.arcLast Updated: 2010-01-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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