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181634 (2006 XW20)
Classification: Main-belt Asteroid          SPK-ID: 2181634
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144798109382284 4.5353e-08  
a 2.540136184704691 1.9936e-08 au
q 2.249341874522345 1.2198e-07 au
i 8.054438359630151 4.5376e-06 deg
node 211.6829942175179 3.9986e-05 deg
peri 52.02527717314736 4.6729e-05 deg
M 333.5917283217085 2.6487e-05 deg
tp 2459308.972938946727
(2021-Apr-04.47293895)
0.00010912 TDB
period 1478.713128088665
4.05
1.7408e-05
4.766e-08
d
yr
n .2434549292636117 2.8661e-09 deg/d
Q 2.830930494887037 2.2219e-08 au
  Orbit Determination Parameters
   # obs. used (total)      447  
   data-arc span      6850 days (18.75 yr)  
   first obs. used      2001-08-20  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56813  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:24  

Additional Information
 Earth MOID = 1.243 au 
 Jupiter MOID = 2.2294 au 
 T_jup = 3.423 
[ 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 16.01   n/a E2021B55  

181634 (2006 XW20)          Discovered 2006-Dec-11 by CSS at Catalina
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2006 XW20 = 2001 QM129 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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