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JPL Small-Body Database Browser
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(2013 PD21)
Classification: Apollo [NEO]          SPK-ID: 3645499
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .560057751138591 1.2622e-07  
a 1.952276751351339 4.2086e-07 au
q .8588890243893537 9.4378e-08 au
i 34.96362988582767 2.0187e-05 deg
node 135.721553454058 1.0506e-05 deg
peri 289.4912102951257 1.8338e-05 deg
M 350.7700518931348 0.00023548 deg
tp 2458626.045079535200
(2019-May-22.54507954)
0.00065999 TDB
period 996.3467319856398
2.73
0.00032218
8.821e-07
d
yr
n .3613199987945447 1.1684e-07 deg/d
Q 3.045664478313323 6.5657e-07 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      679 days (1.86 yr)  
   first obs. used      2013-08-08  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .25795  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:45:11  

Additional Information
 Earth MOID = .112936 au 
 Jupiter MOID = 2.94889 au 
 T_jup = 3.497 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.4   n/a MPO340303  
rotation period rot_per 4.82 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2014) Minor Planet Bull. 41, 157-168.]

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