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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08190585122262525 5.3586e-08  
a 3.159387155382457 3.4467e-08 au
q 2.900614861079029 1.5473e-07 au
i 14.05000993276866 3.3678e-06 deg
node 308.4504817891953 2.9579e-05 deg
peri 340.2794004516534 5.5675e-05 deg
M 107.5968730607887 4.9724e-05 deg
tp 2458587.444421603047
(2019-Apr-13.94442160)
0.00028029 TDB
period 2051.174926786345
5.62
3.3566e-05
9.19e-08
d
yr
n .1755091656487952 2.8721e-09 deg/d
Q 3.418159449685886 3.729e-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 = 1.88641 au 
 Jupiter MOID = 1.83239 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458598.5 (2019-Apr-25.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08261429399895519 5.3623e-08  
q 2.899500387150598 1.5459e-07 au
tp 2458587.234432816166
(2019-Apr-13.73443282)
0.00027868 TDB
node 308.4513422605251 2.9587e-05 deg
peri 340.2028948041527 5.5437e-05 deg
i 14.04684111633289 3.367e-06 deg
  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
 Jupiter MOID = 1.83239 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.875451236462307E-15 -8.162119940817617E-15 3.303687832582907E-12 -1.030860087346534E-14 3.433271362940319E-13 1.30401355758549E-15
q -8.162119940817617E-15 2.389711766449776E-14 -7.679233661255818E-12 3.094767829898895E-14 -6.885258750426038E-13 -4.541513114913927E-15
tp 3.303687832582907E-12 -7.679233661255818E-12 7.766201366867209E-8 -1.619187217158608E-10 1.31441322116315E-8 -8.118107947340157E-11
node -1.030860087346534E-14 3.094767829898895E-14 -1.619187217158608E-10 8.754116197136451E-10 -8.757601331650053E-10 2.851189030509634E-11
peri 3.433271362940319E-13 -6.885258750426038E-13 1.31441322116315E-8 -8.757601331650053E-10 3.073229489121887E-9 -4.155942354411756E-11
i 1.30401355758549E-15 -4.541513114913927E-15 -8.118107947340157E-11 2.851189030509634E-11 -4.155942354411756E-11 1.133654025123827E-11

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

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