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160039 (1999 JE4)
Classification: Main-belt Asteroid          SPK-ID: 2160039
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 .2113539857860084 3.5405e-08  
a 2.437469453880221 1.5366e-08 au
q 1.922300569570991 8.4788e-08 au
i 14.40976928196339 5.6385e-06 deg
node 43.88844280319979 1.5336e-05 deg
peri 255.811355578311 2.1699e-05 deg
M 137.4906206137452 1.7646e-05 deg
tp 2458469.642727678121
(2018-Dec-17.14272768)
6.5602e-05 TDB
period 1389.975673851682
3.81
1.3144e-05
3.599e-08
d
yr
n .258997338422783 2.4491e-09 deg/d
Q 2.952638338189451 1.8614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      735  
   data-arc span      7837 days (21.46 yr)  
   first obs. used      1999-05-07  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54297  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 12:31:16  

Additional Information
 Earth MOID = .96552 au 
 Jupiter MOID = 2.38395 au 
 T_jup = 3.431 
[ 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 15.7   n/a MPO449860  
diameter diameter 2.182 km 0.677 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.234   0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160039 (1999 JE4)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

[ show close-approach data ]
Alternate Designations
 1999 JE4 = 2000 UD53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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