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123941 (2001 EM18)
Classification: Main-belt Asteroid          SPK-ID: 2123941
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717362698695926 4.7622e-08  
a 3.108550402012874 2.434e-08 au
q 2.574699551269561 1.4393e-07 au
i 17.54349738068175 5.8447e-06 deg
node 150.529949584248 1.4096e-05 deg
peri 56.86854936361066 2.1081e-05 deg
M 135.1577458945335 1.506e-05 deg
tp 2458248.922558391945
(2018-May-10.42255839)
8.1818e-05 TDB
period 2001.867352760009
5.48
2.3512e-05
6.437e-08
d
yr
n .1798320950205126 2.1121e-09 deg/d
Q 3.642401252756187 2.8519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      8364 days (22.90 yr)  
   first obs. used      1997-09-07  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:22:49  

Additional Information
 Earth MOID = 1.619 au 
 Jupiter MOID = 1.49872 au 
 T_jup = 3.126 
[ 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 14.3   n/a MPO493706  

123941 (2001 EM18)          Discovered 2001-Mar-13 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2001 EM18 = 2002 LY6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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