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JPL Small-Body Database Browser
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(2009 WA)
Classification: Apollo [NEO]          SPK-ID: 3476774
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1447926026435085 1.2955e-07  
a 1.135662072415272 5.0369e-08 au
q .9712266052267441 1.3187e-07 au
i 29.84255175720957 7.855e-05 deg
node 47.55293879310417 3.1739e-05 deg
peri 71.14545232351178 0.00014849 deg
M 231.7409431446773 0.00025399 deg
tp 2458757.991692804002
(2019-Oct-01.49169280)
0.00032133 TDB
period 442.0507276409751
1.21
2.9409e-05
8.052e-08
d
yr
n .8143861721960222 5.4179e-08 deg/d
Q 1.3000975396038 5.7662e-08 au
  Orbit Determination Parameters
   # obs. used (total)      71  
   data-arc span      2177 days (5.96 yr)  
   first obs. used      2009-11-16  
   last obs. used      2015-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .50279  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-14 07:00:30  

Additional Information
 Earth MOID = .0698062 au 
 Jupiter MOID = 3.85085 au 
 T_jup = 5.384 
[ 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 21.2   n/a MPO176874  
diameter diameter 0.164 km 0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.217   0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

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