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523802 (1998 KH9)
Classification: Amor [NEO]          SPK-ID: 2523802
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4594464183856001 1.0569e-07  
a 2.203266038672363 5.7432e-09 au
q 1.190983348453716 2.3358e-07 au
i 17.67433357218316 1.1234e-05 deg
node 82.64140582514776 1.9117e-05 deg
peri 185.4115289632971 3.0573e-05 deg
M 252.4401798456251 1.1925e-05 deg
tp 2459357.399881590811
(2021-May-22.89988159)
4.0136e-05 TDB
period 1194.534884757948
3.27
4.6706e-06
1.279e-08
d
yr
n .3013725296712016 1.1784e-09 deg/d
Q 3.215548728891009 8.3818e-09 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      7427 days (20.33 yr)  
   first obs. used      1998-05-22  
   last obs. used      2018-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53163  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 05:47:04  

Additional Information
 Earth MOID = .176296 au 
 Jupiter MOID = 1.90425 au 
 T_jup = 3.463 
[ 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 18.5   n/a MPO201058  

523802 (1998 KH9)          Discovered 1998-May-27 by LINEAR at Socorro
Reference: Last Updated: 2018-10-30

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