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118241 (1997 LJ9)
Classification: Main-belt Asteroid          SPK-ID: 2118241
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1866069923258456 2.9193e-08  
a 2.377964527148433 7.9406e-09 au
q 1.934219718879712 6.9955e-08 au
i 2.435889317633475 3.9629e-06 deg
node 106.37217813 0.00011836 deg
peri 219.3903397288242 0.00011942 deg
M 85.34569541392271 1.6997e-05 deg
tp 2458882.969384442994
(2020-Feb-03.46938444)
6.2332e-05 TDB
period 1339.388249707486
3.67
6.7088e-06
1.837e-08
d
yr
n .2687794223061326 1.3463e-09 deg/d
Q 2.821709335417153 9.4224e-09 au
  Orbit Determination Parameters
   # obs. used (total)      461  
   data-arc span      8648 days (23.68 yr)  
   first obs. used      1997-05-04  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53754  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:19:13  

Additional Information
 Earth MOID = .921115 au 
 Jupiter MOID = 2.50793 au 
 T_jup = 3.515 
[ 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 MPO475038  

118241 (1997 LJ9)          Discovered 1997-Jun-07 by Elst, E. W. at La Silla
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1997 LJ9 = 2001 PF4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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