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190122 (2004 WZ9)
Classification: Main-belt Asteroid          SPK-ID: 2190122
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1417050406383968 3.9814e-08  
a 2.852848340461395 1.9997e-08 au
q 2.44858535044113 1.0928e-07 au
i 11.21446729239189 5.8903e-06 deg
node 155.9121269760855 2.0265e-05 deg
peri 242.8663321734108 2.9221e-05 deg
M 135.8692724196982 2.011e-05 deg
tp 2458536.244432532103
(2019-Feb-21.74443253)
9.8132e-05 TDB
period 1760.015344380203
4.82
1.8505e-05
5.066e-08
d
yr
n .2045436712523524 2.1506e-09 deg/d
Q 3.25711133048166 2.2831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      608  
   data-arc span      7803 days (21.36 yr)  
   first obs. used      1999-10-07  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56435  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:06:18  

Additional Information
 Earth MOID = 1.47731 au 
 Jupiter MOID = 2.27305 au 
 T_jup = 3.262 
[ 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 15.56   n/a E2021B55  

190122 (2004 WZ9)          Discovered 2004-Nov-30 by NEAT at Palomar
Reference: 20080819/Numbers.arcLast Updated: 2008-08-25

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