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5020 Asimov (1981 EX19)
Classification: Main-belt Asteroid          SPK-ID: 2005020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2123013942330652 1.1482e-08  
a 2.154599605328873 3.7815e-09 au
q 1.697175105103542 2.4781e-08 au
i 1.102411215229343 9.981e-07 deg
node 197.139064137566 2.8443e-05 deg
peri 131.6628722921108 2.8465e-05 deg
M 126.1435313794873 7.3608e-06 deg
tp 2458991.727708976325
(2020-May-22.22770898)
2.3267e-05 TDB
period 1155.176354863163
3.16
3.0412e-06
8.326e-09
d
yr
n .3116407278286474 8.2044e-10 deg/d
Q 2.612024105554205 4.5843e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2655  
   data-arc span      24799 days (67.90 yr)  
   first obs. used      1953-05-18  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:36:19  

Additional Information
 Earth MOID = .685491 au 
 Jupiter MOID = 2.73531 au 
 T_jup = 3.672 
[ 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 14.65   n/a E2021B10  
diameter diameter 3.457 km 0.328 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5020 Asimov (1981 EX19)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 EX19 = 1963 UH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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