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233886 (2008 XQ18)
Classification: Main-belt Asteroid          SPK-ID: 2233886
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1450917020817347 6.203e-08  
a 3.184298887248819 3.1684e-08 au
q 2.722283541760914 2.0219e-07 au
i 1.594492695539094 6.4664e-06 deg
node 178.6260418707121 0.00020888 deg
peri 195.8229759415651 0.00021003 deg
M 63.11901108367348 1.8848e-05 deg
tp 2458636.604362063233
(2019-Jun-02.10436206)
0.00010854 TDB
period 2075.482923577071
5.68
3.0977e-05
8.481e-08
d
yr
n .1734536073077124 2.5888e-09 deg/d
Q 3.646314232736724 3.6281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      7602 days (20.81 yr)  
   first obs. used      1999-03-21  
   last obs. used      2020-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 07:25:05  

Additional Information
 Earth MOID = 1.72318 au 
 Jupiter MOID = 1.81761 au 
 T_jup = 3.181 
[ 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 15.9   n/a MPO454692  

233886 (2008 XQ18)          Discovered 2008-Dec-01 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

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