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212903 (2007 WZ38)
Classification: Main-belt Asteroid          SPK-ID: 2212903
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708985183733515 3.9729e-08  
a 3.162110915501901 2.8023e-08 au
q 2.621710845110424 1.2311e-07 au
i 5.499417571603837 5.9417e-06 deg
node 34.85914862646147 5.4929e-05 deg
peri 65.51034708793668 5.8873e-05 deg
M 99.6105312744177 1.9291e-05 deg
tp 2458632.214164305807
(2019-May-28.71416431)
0.00010887 TDB
period 2053.828026338929
5.62
2.7302e-05
7.475e-08
d
yr
n .1752824459415531 2.3301e-09 deg/d
Q 3.702510985893378 3.2812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      9012 days (24.67 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57423  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:40:32  

Additional Information
 Earth MOID = 1.64434 au 
 Jupiter MOID = 1.51004 au 
 T_jup = 3.175 
[ 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 15.99   n/a E2021B55  

212903 (2007 WZ38)          Discovered 2007-Nov-19 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

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