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46532 (1981 EN13)
Classification: Main-belt Asteroid          SPK-ID: 2046532
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08227610612723091 5.2551e-08  
a 2.222668497428859 8.2965e-09 au
q 2.039795988248749 1.1823e-07 au
i 4.364252836496372 3.9214e-06 deg
node 260.9888083131468 7.0099e-05 deg
peri 270.9607660674423 7.3949e-05 deg
M 186.8016266006136 2.4781e-05 deg
tp 2459182.806685553162
(2020-Nov-29.30668555)
8.4208e-05 TDB
period 1210.348588642583
3.31
6.7768e-06
1.855e-08
d
yr
n .2974349731788783 1.6653e-09 deg/d
Q 2.405541006608968 8.9791e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1174  
   data-arc span      14623 days (40.04 yr)  
   first obs. used      1979-10-18  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55859  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:33  

Additional Information
 Earth MOID = 1.05092 au 
 Jupiter MOID = 2.57955 au 
 T_jup = 3.640 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO452806  
diameter diameter 2.434 km 0.431 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.359   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46532 (1981 EN13)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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