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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054636403997836 5.3465e-08  
a 1.981876459107462 1.6187e-08 au
q 1.772860552907356 1.1011e-07 au
i 18.90362478862799 5.7178e-06 deg
node 233.6795315085675 2.0598e-05 deg
peri 229.8231121162405 5.7271e-05 deg
M 227.7642197804934 5.6189e-05 deg
tp 2459374.834432494373
(2021-Jun-09.33443249)
0.00016255 TDB
period 1019.091772849049
2.79
1.2485e-05
3.418e-08
d
yr
n .3532557219979877 4.3277e-09 deg/d
Q 2.190892365307567 1.7894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      4545 days (12.44 yr)  
   first obs. used      2008-05-14  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:47:58  

Additional Information
 Earth MOID = .823701 au 
 Jupiter MOID = 3.08117 au 
 T_jup = 3.787 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458412.5 (2018-Oct-21.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054638955645642 5.3262e-08  
q 1.772705133304114 1.0984e-07 au
tp 2458354.717310014112
(2018-Aug-24.21731001)
0.0001532 TDB
node 233.7008010939889 2.0585e-05 deg
peri 229.4760985372465 5.7327e-05 deg
i 18.91119056008933 5.7199e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      4545 days (12.44 yr)  
   first obs. used      2008-05-14  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:47:58  

Additional Information
 Jupiter MOID = 3.08117 au 
 T_jup = 3.787 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.836814415256311E-15 -5.801246112303109E-15 8.677397437802289E-13 7.716985407483242E-14 4.294264367678844E-13 -5.79974934114617E-15
q -5.801246112303109E-15 1.206551323566328E-14 -6.498346989491142E-14 -1.402982356578748E-13 -2.84407868156392E-13 2.518501390422005E-14
tp 8.677397437802289E-13 -6.498346989491142E-14 2.346933934950693E-8 2.606891661540487E-10 8.239071081205045E-9 1.694968694602938E-10
node 7.716985407483242E-14 -1.402982356578748E-13 2.606891661540487E-10 4.237522980642571E-10 -3.018709426771261E-10 -5.637787000593464E-11
peri 4.294264367678844E-13 -2.84407868156392E-13 8.239071081205045E-9 -3.018709426771261E-10 3.286348431608117E-9 1.141348908470391E-10
i -5.79974934114617E-15 2.518501390422005E-14 1.694968694602938E-10 -5.637787000593464E-11 1.141348908470391E-10 3.271680423855099E-11

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2076-Nov-13 23:27 00:05 Iris 0.0377592998834313 0.0377054093175845 0.0378132444597621 6.46015910902379 6.4601590854567 2479621.477261804 5.31565327271612 3506.95623900993 69.6758770109105 39.9675385186134 52078.8592235027 T 8 CATAB v2.0f-lin.ifort 2020-Nov-11 16:47:59 2020-Nov-11 16:47
2180-Feb-03 14:28 00:16 Iris 0.0241028574993974 0.0240952435220383 0.0241117686884439 6.28374267823206 6.28374264027557 2517322.102454453 15.5850392640488 8959.34784601389 70.2051795196525 -87.4044888778971 51294.6825882017 T 8 CATAB v2.0f-lin.ifort 2020-Nov-11 16:47:59 2020-Nov-11 16:47
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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