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58134 (1981 EW40)
Classification: Main-belt Asteroid          SPK-ID: 2058134
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605378280159128 4.8149e-08  
a 2.365809969829695 1.0781e-08 au
q 1.986007975774843 1.1301e-07 au
i 10.14425583958252 5.0037e-06 deg
node 353.1970193844019 1.954e-05 deg
peri 344.8993919157007 2.2771e-05 deg
M 17.22680315370042 1.233e-05 deg
tp 2458536.898054005478
(2019-Feb-22.39805401)
4.5373e-05 TDB
period 1329.132303523748
3.64
9.085e-06
2.487e-08
d
yr
n .2708533973973703 1.8514e-09 deg/d
Q 2.745611963884546 1.2511e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      14180 days (38.82 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50448  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:58:43  

Additional Information
 Earth MOID = .97849 au 
 Jupiter MOID = 2.64707 au 
 T_jup = 3.510 
[ 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 15.0   n/a MPO347909  
diameter diameter 3.150 km 0.621 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.178   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58134 (1981 EW40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EW40 = 2001 XR42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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