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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054636398916026 5.3428e-08  
a 1.981876458822989 1.6176e-08 au
q 1.772860553660037 1.1006e-07 au
i 18.90362471098854 5.7172e-06 deg
node 233.6795298408546 2.0521e-05 deg
peri 229.8231123896023 5.7264e-05 deg
M 227.7642210963953 5.6162e-05 deg
tp 2459374.834428688707
(2021-Jun-09.33442869)
0.00016247 TDB
period 1019.091772629633
2.79
1.2477e-05
3.416e-08
d
yr
n .3532557220740456 4.325e-09 deg/d
Q 2.190892363985942 1.7882e-08 au
  Orbit Determination Parameters
   # obs. used (total)      161  
   data-arc span      4568 days (12.51 yr)  
   first obs. used      2008-05-14  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53103  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:57:50  

Additional Information
 Earth MOID = .823701 au 
 Jupiter MOID = 3.08117 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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