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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2124142367194697 2.7963e-08  
a 2.154362219425614 4.2782e-09 au
q 1.69674501296906 5.9261e-08 au
i 1.102476369351528 3.8986e-06 deg
node 197.1505903125025 0.00013541 deg
peri 131.5913848952098 0.00013576 deg
M 2.766958327919276 1.071e-05 deg
tp 2458991.622787192260
(2020-May-22.12278719)
3.4352e-05 TDB
period 1154.985450463759
3.16
3.4404e-06
9.419e-09
d
yr
n .3116922380757695 9.2846e-10 deg/d
Q 2.611979425882169 5.187e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2390  
   data-arc span      24654 days (67.50 yr)  
   first obs. used      1953-05-18  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48864  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:20:22  

Additional Information
 Earth MOID = .685788 au 
 Jupiter MOID = 2.73565 au 
 T_jup = 3.673 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456768.5 (2014-Apr-21.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2125121721150122 2.7856e-08  
q 1.696333135614344 5.9043e-08 au
tp 2456680.665746301828
(2014-Jan-23.16574630)
3.2237e-05 TDB
node 197.3047300132877 0.00013579 deg
peri 131.2483171772792 0.00013613 deg
i 1.099906200528034 3.8966e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2390  
   data-arc span      24654 days (67.50 yr)  
   first obs. used      1953-05-18  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48864  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:20:22  

Additional Information
 Jupiter MOID = 2.73565 au 
 T_jup = 3.673 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.759474316386531E-16 -1.642318087136644E-15 4.260248605947267E-13 -2.549081527138452E-15 1.186083005530706E-13 -9.403290399657474E-17
q -1.642318087136644E-15 3.486112455845111E-15 -8.934070466403707E-13 5.374061501593227E-15 -2.480275472394282E-13 2.091759246130374E-16
tp 4.260248605947267E-13 -8.934070466403707E-13 1.039217927533834E-9 -4.339370560810468E-12 3.164530673566279E-10 -2.529443080987945E-13
node -2.549081527138452E-15 5.374061501593227E-15 -4.339370560810468E-12 1.843760183611527E-8 -1.843520853486673E-8 8.898639357986622E-11
peri 1.186083005530706E-13 -2.480275472394282E-13 3.164530673566279E-10 -1.843520853486673E-8 1.853174530066095E-8 -8.905245068227817E-11
i -9.403290399657474E-17 2.091759246130374E-16 -2.529443080987945E-13 8.898639357986622E-11 -8.905245068227817E-11 1.5183745568239E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO384799  
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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