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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2113539855077884 3.5421e-08  
a 2.437469453054487 1.5398e-08 au
q 1.922300569597932 8.4809e-08 au
i 14.40976873114561 5.7569e-06 deg
node 43.888443607562 1.5387e-05 deg
peri 255.8113568889762 2.186e-05 deg
M 137.490618984225 1.7732e-05 deg
tp 2458469.642734239525
(2018-Dec-17.14273424)
6.5979e-05 TDB
period 1389.975673145366
3.81
1.3172e-05
3.606e-08
d
yr
n .2589973385543924 2.4543e-09 deg/d
Q 2.952638336511042 1.8653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      728  
   data-arc span      7567 days (20.72 yr)  
   first obs. used      1999-05-07  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:12:38  

Additional Information
 Earth MOID = .96552 au 
 Jupiter MOID = 2.38395 au 
 T_jup = 3.431 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457297.5 (2015-Oct-02.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .211951763161336 3.5385e-08  
q 1.920429896995635 8.4727e-08 au
tp 2457080.945605466675
(2015-Feb-27.44560547)
6.0953e-05 TDB
node 43.89545013224677 1.5387e-05 deg
peri 255.9688978231813 2.1854e-05 deg
i 14.41202635419547 5.758e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      728  
   data-arc span      7567 days (20.72 yr)  
   first obs. used      1999-05-07  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:12:38  

Additional Information
 Jupiter MOID = 2.38395 au 
 T_jup = 3.431 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.252076930476816E-15 -2.968431151755139E-15 5.707168262485044E-13 -5.643489541153734E-15 1.069768587690673E-13 -3.137524848499379E-16
q -2.968431151755139E-15 7.178649082354459E-15 -1.184532543267389E-12 1.069412949559574E-14 -2.036206613834576E-13 1.614141482756351E-15
tp 5.707168262485044E-13 -1.184532543267389E-12 3.715320554494813E-9 -1.53944360897602E-11 9.534090284199417E-10 -9.013140066366537E-12
node -5.643489541153734E-15 1.069412949559574E-14 -1.53944360897602E-11 2.367585413181604E-10 -2.326715915979438E-10 -1.784506376362533E-11
peri 1.069768587690673E-13 -2.036206613834576E-13 9.534090284199417E-10 -2.326715915979438E-10 4.77610201582812E-10 1.513639196135137E-11
i -3.137524848499379E-16 1.614141482756351E-15 -9.013140066366537E-12 -1.784506376362533E-11 1.513639196135137E-11 3.315466130215571E-11

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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