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19933 (1981 EW5)
Classification: Main-belt Asteroid          SPK-ID: 2019933
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1505539068324264 4.8435e-08  
a 2.552707595662977 1.0955e-08 au
q 2.168387494135106 1.2233e-07 au
i 12.61112232152546 4.8025e-06 deg
node 223.6907468888235 1.8031e-05 deg
peri 190.5753337262698 2.3093e-05 deg
M 64.70043046387705 1.2633e-05 deg
tp 2459128.765275212489
(2020-Oct-06.26527521)
5.2897e-05 TDB
period 1489.704167846559
4.08
9.5901e-06
2.626e-08
d
yr
n .2416587184020555 1.5557e-09 deg/d
Q 2.937027697190849 1.2605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1562  
   data-arc span      14677 days (40.18 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43478  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:17:22  

Additional Information
 Earth MOID = 1.17991 au 
 Jupiter MOID = 2.44272 au 
 T_jup = 3.390 
[ 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 14.02   n/a E2021B10  
diameter diameter 9.534 km 0.204 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19933 (1981 EW5)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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