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136039 (2002 WR4)
Classification: Main-belt Asteroid          SPK-ID: 2136039
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1841167822295924 8.1171e-08  
a 2.734961330364611 2.7416e-08 au
q 2.231409050695514 2.3143e-07 au
i 8.195356185587084 6.5398e-06 deg
node 272.8031217749034 4.463e-05 deg
peri 54.75562382937973 4.7347e-05 deg
M 12.86549183583355 1.4317e-05 deg
tp 2458941.459625313985
(2020-Apr-01.95962531)
6.5386e-05 TDB
period 1652.057702742951
4.52
2.4841e-05
6.801e-08
d
yr
n .2179100641595529 3.2766e-09 deg/d
Q 3.238513610033708 3.2464e-08 au
  Orbit Determination Parameters
   # obs. used (total)      333  
   data-arc span      6053 days (16.57 yr)  
   first obs. used      2002-10-05  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53604  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:12:37  

Additional Information
 Earth MOID = 1.23135 au 
 Jupiter MOID = 2.13 au 
 T_jup = 3.313 
[ 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 MPO436668  
diameter diameter 4.991 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136039 (2002 WR4)          Discovered 2002-Nov-21 by NEAT at Palomar
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

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