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201987 (2004 PA66)
Classification: Main-belt Asteroid          SPK-ID: 2201987
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2172792192394763 4.7917e-08  
a 2.321401664528962 1.4202e-08 au
q 1.817009323318889 1.1106e-07 au
i 2.221283684179863 5.3703e-06 deg
node 153.731488751358 0.00014824 deg
peri 160.4302665931608 0.00014881 deg
M 172.7516250173067 1.6182e-05 deg
tp 2458380.568784939017
(2018-Sep-19.06878494)
5.4434e-05 TDB
period 1291.885025102344
3.54
1.1856e-05
3.246e-08
d
yr
n .2786625690405233 2.5573e-09 deg/d
Q 2.825794005739036 1.7288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      8182 days (22.40 yr)  
   first obs. used      1997-08-11  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57386  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 00:15:33  

Additional Information
 Earth MOID = .803346 au 
 Jupiter MOID = 2.46478 au 
 T_jup = 3.544 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3   n/a MPO454432  

201987 (2004 PA66)          Discovered 2004-Aug-08 by LINEAR at Socorro
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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