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152680 (1998 KJ9)
Classification: Apollo [NEO, PHA]          SPK-ID: 2152680
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .639661108589567 3.9938e-08  
a 1.447721701126465 5.3606e-09 AU
q .5216704328547365 5.8518e-08 AU
i 10.93380507745562 1.3807e-05 deg
node 98.70016681387254 3.2338e-05 deg
peri 259.9359605955256 3.1314e-05 deg
M 160.5022090155472 2.0524e-05 deg
tp 2456116.835775209803
(2012-Jul-08.33577521)		 3.4766e-05 JED
period 636.2474482490093
1.74		 3.5338e-06
9.675e-09		 d
yr
n .5658175934390642 3.1426e-09 deg/d
Q 2.373772969398193 8.7896e-09 AU
   Orbit Determination Parameters
   # obs. used (total)      192  
   data-arc span      7706 days (21.10 yr)  
   first obs. used      1990-01-01  
   last obs. used      2011-02-06  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .4461  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 15:39:13  

Additional Information
 Earth MOID = .0054161 AU 
 T_jup = 4.390 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.425 mag .74196 25 autocmod 2.5c

152680 (1998 KJ9)          Discovered 1998-May-27 by LINEAR at Socorro (704)
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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