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441849 (2009 WO20)
Classification: Main-belt Asteroid          SPK-ID: 2441849
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1231240179251069 4.6442e-08  
a 2.195081717269142 1.8268e-08 au
q 1.924814436565022 9.4406e-08 au
i 3.314676857403917 7.9813e-06 deg
node 301.2083733657074 8.8176e-05 deg
peri 119.9802893454168 9.8514e-05 deg
M 212.6423948054098 4.4724e-05 deg
tp 2459882.733100007020
(2022-Oct-30.23310001)
0.00015137 TDB
period 1187.885184286052
3.25
1.4828e-05
4.06e-08
d
yr
n .3030595925955325 3.7831e-09 deg/d
Q 2.465348997973262 2.0517e-08 au
  Orbit Determination Parameters
   # obs. used (total)      114  
   data-arc span      4808 days (13.16 yr)  
   first obs. used      2006-12-27  
   last obs. used      2020-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59768  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:42:11  

Additional Information
 Earth MOID = .939882 au 
 Jupiter MOID = 2.8054 au 
 T_jup = 3.657 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.23   n/a E2021B25  

441849 (2009 WO20)          Discovered 2006-Dec-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2009 WO20 = 2012 TO43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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