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173191 (1998 KJ61)
Classification: Main-belt Asteroid          SPK-ID: 2173191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2082275360429857 5.8166e-08  
a 2.341420406407634 1.9973e-08 au
q 1.853872204340606 1.4341e-07 au
i 6.116601727846124 6.2154e-06 deg
node 133.2537609445936 6.1654e-05 deg
peri 123.6055553661791 6.817e-05 deg
M 45.97607764621586 3.9335e-05 deg
tp 2458833.372874998488
(2019-Dec-15.87287500)
0.00014113 TDB
period 1308.63196864068
3.58
1.6744e-05
4.584e-08
d
yr
n .2750964431764142 3.5199e-09 deg/d
Q 2.828968608474662 2.4132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      286  
   data-arc span      7644 days (20.93 yr)  
   first obs. used      1998-05-23  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:00:18  

Additional Information
 Earth MOID = .847192 au 
 Jupiter MOID = 2.25269 au 
 T_jup = 3.527 
[ 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 16.8   n/a MPO433112  

173191 (1998 KJ61)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1998 KJ61 = 2002 RJ220 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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