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19996 (1990 WZ)
Classification: Main-belt Asteroid          SPK-ID: 2019996
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05821054867654531 3.3423e-08  
a 2.790618898160957 1.2823e-08 au
q 2.628175440951872 9.2127e-08 au
i 8.913428930577032 4.5083e-06 deg
node 190.2719425460102 2.4107e-05 deg
peri 246.3734645506015 4.6923e-05 deg
M 100.5786416016942 3.9841e-05 deg
tp 2458524.778819009190
(2019-Feb-10.27881901)
0.0001881 TDB
period 1702.743469482362
4.66
1.1736e-05
3.213e-08
d
yr
n .2114235094435223 1.4573e-09 deg/d
Q 2.953062355370043 1.357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1746  
   data-arc span      10761 days (29.46 yr)  
   first obs. used      1990-11-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4971  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:07:54  

Additional Information
 Earth MOID = 1.6574 au 
 Jupiter MOID = 2.21757 au 
 T_jup = 3.309 
[ 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 MPO467936  
diameter diameter 9.427 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19996 (1990 WZ)          Discovered 1990-Nov-18 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 WZ = 1997 GT16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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