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(2009 DR3)
Classification: Apollo [NEO, PHA]          SPK-ID: 3447934
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5606588326505237 6.73e-08  
a 1.976299671756919 1.3998e-08 au
q .8682698048220716 1.275e-07 au
i 4.081366317587911 9.5397e-06 deg
node 344.6777587006446 1.6705e-05 deg
peri 237.5354739662271 2.92e-05 deg
M 72.38500262360579 2.2128e-05 deg
tp 2458996.456051839075
(2020-May-26.95605184)
6.0213e-05 TDB
period 1014.793378124131
2.78
1.0781e-05
2.952e-08
d
yr
n .3547520192390972 3.7689e-09 deg/d
Q 3.084329538691767 2.1846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      249  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      4231 days (11.58 yr)  
   first obs. used      2009-02-14  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .33094  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 02:36:05  

Additional Information
 Earth MOID = .00947143 au 
 Jupiter MOID = 1.92165 au 
 T_jup = 3.651 
[ 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 21.5   n/a MPO160607  

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