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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1502590397110423 5.3198e-08  
a 2.551878938120936 1.4547e-08 au
q 2.16843605942005 1.3224e-07 au
i 12.61272123071496 5.4335e-06 deg
node 223.6974258255946 2.2056e-05 deg
peri 190.5503584370519 2.7175e-05 deg
M 329.0045084364242 1.7416e-05 deg
tp 2459128.698975821336
(2020-Oct-06.19897582)
7.223e-05 TDB
period 1488.978847166137
4.08
1.2732e-05
3.486e-08
d
yr
n .2417764367070502 2.0674e-09 deg/d
Q 2.935321816821822 1.6733e-08 au
  Orbit Determination Parameters
   # obs. used (total)      950  
   data-arc span      13977 days (38.27 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51152  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:47:30  

Additional Information
 Earth MOID = 1.18043 au 
 Jupiter MOID = 2.44254 au 
 T_jup = 3.390 
[ 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 14.0   n/a MPO474028  
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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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