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185697 (1997 WO9)
Classification: Main-belt Asteroid          SPK-ID: 2185697
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1552005976018448 4.9636e-08  
a 2.698492341083053 1.8385e-08 au
q 2.279684717122962 1.3674e-07 au
i 4.734142057125785 5.0882e-06 deg
node 82.69596714446753 6.5723e-05 deg
peri 63.4957234487092 6.8705e-05 deg
M 315.1881409874912 2.2201e-05 deg
tp 2459202.044370345549
(2020-Dec-18.54437035)
0.00010109 TDB
period 1619.124377414125
4.43
1.6547e-05
4.53e-08
d
yr
n .2223424000168225 2.2722e-09 deg/d
Q 3.117299965043144 2.1238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      273  
   data-arc span      8101 days (22.18 yr)  
   first obs. used      1997-11-21  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55074  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:08:38  

Additional Information
 Earth MOID = 1.29653 au 
 Jupiter MOID = 1.90498 au 
 T_jup = 3.346 
[ 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 16.5   n/a MPO454278  

185697 (1997 WO9)          Discovered 1997-Nov-21 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1997 WO9 = 2003 BO69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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