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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6397321349456555 5.3202e-08  
a 1.447899602317947 4.811e-09 AU
q .5216316985401213 7.7205e-08 AU
i 10.93258237516039 1.5285e-05 deg
node 98.69014268992922 4.4963e-05 deg
peri 259.9346525181309 4.3421e-05 deg
M 139.9485733593145 1.9351e-05 deg
tp 2456753.115733687880
(2014-Apr-05.61573369)
3.306e-05 JED
period 636.364728375674
1.74
3.1717e-06
8.684e-09
d
yr
n .5657133149395361 2.8196e-09 deg/d
Q 2.374167506095773 7.8888e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      7706 days (21.10 yr)  
   first obs. used      1990-01-01  
   last obs. used      2011-02-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47107  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 08:59:48  

Additional Information
 Earth MOID = .00528577 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 19.4 mag n/a MPO192326  

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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