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406952 (2009 KJ)
Classification: Apollo [NEO]          SPK-ID: 2406952
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7174635300095615 2.5142e-07  
a 1.240909379311352 9.3023e-09 au
q .3506021556086553 3.1137e-07 au
i 32.96045847059123 5.2457e-05 deg
node 12.51345723085332 6.5324e-05 deg
peri 67.10566921751762 5.542e-05 deg
M 29.30811801246988 3.5836e-05 deg
tp 2458959.395065695073
(2020-Apr-19.89506570)
4.9888e-05 TDB
period 504.903670153014
1.38
5.6774e-06
1.554e-08
d
yr
n .7130072948190292 8.0175e-09 deg/d
Q 2.131216603014048 1.5976e-08 au
  Orbit Determination Parameters
   # obs. used (total)      101  
   data-arc span      4041 days (11.06 yr)  
   first obs. used      2009-05-16  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-08 05:55:25  

Additional Information
 Earth MOID = .0884628 au 
 Jupiter MOID = 3.63149 au 
 T_jup = 4.764 
[ 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 17.2   n/a MPO380184  
diameter diameter 0.772 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.429   0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

406952 (2009 KJ)          Discovered 2009-May-16 by CSS at Catalina
Reference: Last Updated: 2014-09-12

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