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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457246.5 (2015-Aug-12.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548622305537784 5.0004e-08  
q 2.280009243239775 1.3766e-07 au
tp 2457585.620003535043
(2016-Jul-16.12000353)
9.1884e-05 TDB
node 82.73347641275522 6.5767e-05 deg
peri 63.9828212892369 6.8729e-05 deg
i 4.732986013596926 5.086e-06 deg
  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
 Jupiter MOID = 1.90498 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.500436890542459E-15 -6.840573625070194E-15 4.521579004932132E-13 2.31181983622295E-14 2.021464478948641E-13 -5.9678097746102E-16
q -6.840573625070194E-15 1.894972924324569E-14 -5.408688418496747E-13 -6.279585789813891E-14 -4.164945639080881E-13 2.578344086476751E-15
tp 4.521579004932132E-13 -5.408688418496747E-13 8.442699195724158E-9 2.187140716883395E-11 1.859526175128211E-9 4.667144605195923E-12
node 2.31181983622295E-14 -6.279585789813891E-14 2.187140716883395E-11 4.32526499261671E-9 -4.304297229182777E-9 -6.895937233659265E-11
peri 2.021464478948641E-13 -4.164945639080881E-13 1.859526175128211E-9 -4.304297229182777E-9 4.723700264573962E-9 6.974422088214073E-11
i -5.9678097746102E-16 2.578344086476751E-15 4.667144605195923E-12 -6.895937233659265E-11 6.974422088214073E-11 2.586741114508504E-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 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

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