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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1709405418440681 3.9742e-08  
a 3.162833816486633 2.807e-08 au
q 2.622177290133666 1.2321e-07 au
i 5.498885547372519 5.9411e-06 deg
node 34.86068653798035 5.4934e-05 deg
peri 65.58272804839024 5.8872e-05 deg
M 64.47956916451224 1.9195e-05 deg
tp 2458632.512883984039
(2019-May-29.01288398)
0.00010884 TDB
period 2054.53236555831
5.63
2.7351e-05
7.488e-08
d
yr
n .175222355235164 2.3326e-09 deg/d
Q 3.703490342839599 3.2868e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57425  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:58:02  

Additional Information
 Earth MOID = 1.64501 au 
 Jupiter MOID = 1.50892 au 
 T_jup = 3.174 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457581.5 (2016-Jul-12.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717355950780068 3.976e-08  
q 2.619076709212818 1.233e-07 au
tp 2456579.475977628247
(2013-Oct-13.97597763)
0.00010831 TDB
node 34.87631751117529 5.4936e-05 deg
peri 65.87755582831221 5.8835e-05 deg
i 5.49958757074184 5.9415e-06 deg
  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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57425  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:58:02  

Additional Information
 Jupiter MOID = 1.50892 au 
 T_jup = 3.174 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.580897006554851E-15 -4.818718847583626E-15 3.512347026972599E-13 6.989137547335885E-15 7.501323975786254E-14 -1.382719315205827E-15
q -4.818718847583626E-15 1.52020120171447E-14 -1.43738397664692E-12 -2.065035612584581E-14 -2.448419649396731E-13 4.661421344066067E-15
tp 3.512347026972599E-13 -1.43738397664692E-12 1.173037344587385E-8 -2.953232270535494E-11 2.301113467057137E-9 -2.531610941010948E-12
node 6.989137547335885E-15 -2.065035612584581E-14 -2.953232270535494E-11 3.017977359545745E-9 -3.009437000412688E-9 -1.058890402036588E-10
peri 7.501323975786254E-14 -2.448419649396731E-13 2.301113467057137E-9 -3.009437000412688E-9 3.461586224286426E-9 1.049787213943357E-10
i -1.382719315205827E-15 4.661421344066067E-15 -2.531610941010948E-12 -1.058890402036588E-10 1.049787213943357E-10 3.530193411862712E-11

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 15.8   n/a MPO418140  

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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