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349922 (2009 TW42)
Classification: Inner Main-belt Asteroid          SPK-ID: 2349922
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1055978332401013 5.3407e-08  
a 1.981620982368561 1.6152e-08 au
q 1.77236610032732 1.1e-07 au
i 18.90416263392026 5.715e-06 deg
node 233.6747631177665 2.0436e-05 deg
peri 229.8886646672113 5.7158e-05 deg
M 298.3727837225234 5.6675e-05 deg
tp 2459374.921238220179
(2021-Jun-09.42123822)
0.00016204 TDB
period 1018.894727883617
2.79
1.2457e-05
3.411e-08
d
yr
n .3533240384389553 4.3199e-09 deg/d
Q 2.190875864409802 1.7858e-08 au
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      4588 days (12.56 yr)  
   first obs. used      2008-05-14  
   last obs. used      2020-12-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 08:52:37  

Additional Information
 Earth MOID = .822873 au 
 Jupiter MOID = 3.08016 au 
 T_jup = 3.787 
[ 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 17.9   n/a MPO368388  

349922 (2009 TW42)          Discovered 2009-Oct-01 by Charleston at Charleston
Reference: 20121228/Numbers.arcLast Updated: 2013-01-02

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