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38239 (1999 OR3)
Classification: Apollo [NEO]          SPK-ID: 2038239
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .57593307732569 7.0122e-08  
a 2.034745331006725 2.4366e-08 au
q .8628681909459421 1.511e-07 au
i 9.440722056067036 9.5026e-06 deg
node 199.9585682709723 8.1527e-05 deg
peri 28.08578593894868 7.8233e-05 deg
M 86.85765612167114 4.809e-05 deg
tp 2458744.718504279466
(2019-Sep-18.21850428)
0.00013708 TDB
period 1060.140724156817
2.90
1.9043e-05
5.214e-08
d
yr
n .3395775596549469 6.0997e-09 deg/d
Q 3.206622471067507 3.84e-08 au
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      7108 days (19.46 yr)  
   first obs. used      1999-07-27  
   last obs. used      2019-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57438  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-13 08:15:24  

Additional Information
 Earth MOID = .055878 au 
 Jupiter MOID = 1.79963 au 
 T_jup = 3.566 
[ 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 18.2   n/a MPO231661  

38239 (1999 OR3)          Discovered 1999-Jul-27 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

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