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312222 (2007 WZ39)
Classification: Main-belt Asteroid          SPK-ID: 2312222
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2280751243837987 3.2349e-07  
a 2.464088718584993 6.8458e-08 au
q 1.902091377601006 7.5237e-07 au
i 12.19470996095895 1.3217e-05 deg
node 76.28158098613018 3.8969e-05 deg
peri 290.9836224642781 7.3199e-05 deg
M 113.5919553164846 0.00010354 deg
tp 2458554.712371243917
(2019-Mar-12.21237124)
0.00038883 TDB
period 1412.807323415272
3.87
5.8877e-05
1.612e-07
d
yr
n .2548118161857686 1.0619e-08 deg/d
Q 3.02608605956898 8.4072e-08 au
  Orbit Determination Parameters
   # obs. used (total)      103  
   data-arc span      5005 days (13.70 yr)  
   first obs. used      2006-05-22  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .72061  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:44:38  

Additional Information
 Earth MOID = .94157 au 
 Jupiter MOID = 2.53315 au 
 T_jup = 3.421 
[ 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 17.2   n/a MPO260637  

312222 (2007 WZ39)          Discovered 2007-Nov-17 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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