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58139 (1981 EP46)
Classification: Main-belt Asteroid          SPK-ID: 2058139
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3009579334963965 2.9377e-08  
a 2.689699351309989 8.6799e-09 au
q 1.880212992813137 7.868e-08 au
i 6.622252101446735 3.7685e-06 deg
node 353.6776911949758 3.0506e-05 deg
peri 60.8092771219952 3.157e-05 deg
M 314.9805246986572 5.6768e-06 deg
tp 2458801.989288123006
(2019-Nov-14.48928812)
2.5298e-05 TDB
period 1611.216995283788
4.41
7.7993e-06
2.135e-08
d
yr
n .2234335915359385 1.0816e-09 deg/d
Q 3.499185709806842 1.1292e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1008  
   data-arc span      14184 days (38.83 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52008  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:58:44  

Additional Information
 Earth MOID = .901312 au 
 Jupiter MOID = 1.94994 au 
 T_jup = 3.297 
[ 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 15.2   n/a MPO502539  
diameter diameter 4.556 km 0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58139 (1981 EP46)          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 EP46 = 2001 PP24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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