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58135 (1981 EK42)
Classification: Main-belt Asteroid          SPK-ID: 2058135
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .105732965255945 3.941e-08  
a 3.121121757944517 2.0959e-08 au
q 2.791116299552196 1.1731e-07 au
i 4.931456042634252 5.4856e-06 deg
node 196.1538284664549 4.8379e-05 deg
peri 304.5388245306866 5.5422e-05 deg
M 79.18881584224771 2.6365e-05 deg
tp 2458557.477440629700
(2019-Mar-14.97744063)
0.00014702 TDB
period 2014.02331474466
5.51
2.0287e-05
5.554e-08
d
yr
n .1787466894570886 1.8005e-09 deg/d
Q 3.45112721633684 2.3175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      793  
   data-arc span      14377 days (39.36 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57416  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:52:13  

Additional Information
 Earth MOID = 1.80764 au 
 Jupiter MOID = 1.58817 au 
 T_jup = 3.202 
[ 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 14.75   n/a E2021B10  
diameter diameter 5.292 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58135 (1981 EK42)          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 EK42 = 2000 SV256 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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