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154121 (2002 EL72)
Classification: Main-belt Asteroid          SPK-ID: 2154121
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1000417798598187 4.8136e-08  
a 3.039630482911895 3.4542e-08 au
q 2.735540439285228 1.5181e-07 au
i 9.068601032165198 9.3349e-06 deg
node 198.6587530247667 3.047e-05 deg
peri 277.1271424377384 5.4847e-05 deg
M 213.2007238894057 4.7674e-05 deg
tp 2459789.816219059992
(2022-Jul-29.31621906)
0.00026085 TDB
period 1935.662398277251
5.30
3.2995e-05
9.034e-08
d
yr
n .1859828451079082 3.1703e-09 deg/d
Q 3.343720526538561 3.7998e-08 au
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      6786 days (18.58 yr)  
   first obs. used      1999-10-13  
   last obs. used      2018-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65623  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 05:58:31  

Additional Information
 Earth MOID = 1.77051 au 
 Jupiter MOID = 1.81204 au 
 T_jup = 3.214 
[ 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 15.1   n/a MPO432983  
diameter diameter 5.721 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

154121 (2002 EL72)          Discovered 2002-Mar-13 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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