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120837 (1998 KE9)
Classification: Main-belt Asteroid          SPK-ID: 2120837
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1795734349220532 3.8737e-08  
a 2.579532092870366 1.2079e-08 au
q 2.116316654461962 9.9188e-08 au
i 13.04435914572218 5.7857e-06 deg
node 169.3962898831711 1.7964e-05 deg
peri 99.07645907841304 2.4242e-05 deg
M 87.08923144889343 1.5899e-05 deg
tp 2458634.423553370061
(2019-May-30.92355337)
6.6156e-05 TDB
period 1513.247029446056
4.14
1.0629e-05
2.91e-08
d
yr
n .2378990296989268 1.671e-09 deg/d
Q 3.042747531278771 1.4248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      8135 days (22.27 yr)  
   first obs. used      1998-04-24  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58174  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:11:20  

Additional Information
 Earth MOID = 1.14762 au 
 Jupiter MOID = 2.19954 au 
 T_jup = 3.367 
[ 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 15.4   n/a MPO436583  

120837 (1998 KE9)          Discovered 1998-May-27 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 KE9 = 2002 FG11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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