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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054636585884915 1.8265e-07  
a 1.981876463433944 3.6077e-08 au
q 1.77286052072978 3.3589e-07 au
i 18.90362013152321 1.0631e-05 deg
node 233.6795276281318 2.4223e-05 deg
peri 229.8231191512454 9.0823e-05 deg
M 227.7642139123404 6.6463e-05 deg
tp 2459374.834450331773
(2021-Jun-09.33445033)
0.00018686 TDB
period 1019.091776186101
2.79
2.7827e-05
7.619e-08
d
yr
n .3532557208412394 9.6458e-09 deg/d
Q 2.190892406138109 3.9882e-08 au
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      4036 days (11.05 yr)  
   first obs. used      2008-05-14  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6112  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:44:45  

Additional Information
 Earth MOID = .823701 au 
 Jupiter MOID = 3.08117 au 
 T_jup = 3.787 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457004.5 (2014-Dec-13.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053633829771594 1.8326e-07  
q 1.773094924856721 3.3761e-07 au
tp 2457336.059520667026
(2015-Nov-09.55952067)
0.00019914 TDB
node 233.7240239709267 2.4217e-05 deg
peri 229.5799464439668 9.0705e-05 deg
i 18.90604009168346 1.0631e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      4036 days (11.05 yr)  
   first obs. used      2008-05-14  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6112  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:44:45  

Additional Information
 Jupiter MOID = 3.08117 au 
 T_jup = 3.787 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.358358212232382E-14 -6.177987427427828E-14 -2.22370396918555E-11 4.508721312833684E-13 -1.107624298785579E-11 -3.552337729707404E-13
q -6.177987427427828E-14 1.139806439181996E-13 4.181534173214955E-11 -8.352265100105159E-13 2.068640088409169E-11 6.514302585984694E-13
tp -2.22370396918555E-11 4.181534173214955E-11 3.965809811082849E-8 -4.199575685411991E-10 1.733072338361606E-8 1.327753699963556E-10
node 4.508721312833684E-13 -8.352265100105159E-13 -4.199575685411991E-10 5.864742009080438E-10 -7.455209180176057E-10 4.387728907591371E-11
peri -1.107624298785579E-11 2.068640088409169E-11 1.733072338361606E-8 -7.455209180176057E-10 8.227327982642487E-9 3.058701077344306E-11
i -3.552337729707404E-13 6.514302585984694E-13 1.327753699963556E-10 4.387728907591371E-11 3.058701077344306E-11 1.130206393821551E-10

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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