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349222 (2007 TW4)
Classification: Main-belt Asteroid          SPK-ID: 2349222
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1187350439751801 6.7537e-08  
a 2.723064134683173 2.277e-08 au
q 2.39974099490433 1.9052e-07 au
i 3.17671223589299 6.4938e-06 deg
node 184.2401574902281 9.2648e-05 deg
peri 177.6011992807259 9.5637e-05 deg
M 26.81287965093795 2.3078e-05 deg
tp 2459274.256383380465
(2021-Feb-28.75638338)
0.00010471 TDB
period 1641.289654671358
4.49
2.0587e-05
5.636e-08
d
yr
n .2193397118999596 2.7512e-09 deg/d
Q 3.046387274462015 2.5474e-08 au
  Orbit Determination Parameters
   # obs. used (total)      147  
   data-arc span      7982 days (21.85 yr)  
   first obs. used      1998-09-12  
   last obs. used      2020-07-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62951  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 08:50:05  

Additional Information
 Earth MOID = 1.39603 au 
 Jupiter MOID = 2.40677 au 
 T_jup = 3.345 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457710.5 (2016-Nov-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208552898574063 6.7493e-08  
q 2.394392768944975 1.9091e-07 au
tp 2457635.355213725847
(2016-Sep-03.85521373)
9.8209e-05 TDB
node 184.376075280703 9.2677e-05 deg
peri 178.1451417858699 9.5559e-05 deg
i 3.176178561989451 6.4941e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      147  
   data-arc span      7982 days (21.85 yr)  
   first obs. used      1998-09-12  
   last obs. used      2020-07-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62951  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 08:50:05  

Additional Information
 Jupiter MOID = 2.40677 au 
 T_jup = 3.345 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.555318576842334E-15 -1.281991140974597E-14 7.573467495424912E-13 -1.748560161544193E-14 3.281129977088618E-13 -2.127935881590293E-15
q -1.281991140974597E-14 3.644656733161031E-14 -1.814947095390542E-12 4.992255005275635E-14 -8.50238004567711E-13 6.48485338187454E-15
tp 7.573467495424912E-13 -1.814947095390542E-12 9.644939471833586E-9 -1.291615837976352E-12 2.302087567147966E-9 4.461673121880458E-12
node -1.748560161544193E-14 4.992255005275635E-14 -1.291615837976352E-12 8.588977648511484E-9 -8.575579728010839E-9 1.147578361662991E-11
peri 3.281129977088618E-13 -8.50238004567711E-13 2.302087567147966E-9 -8.575579728010839E-9 9.131597218105039E-9 -1.039744678499664E-11
i -2.127935881590293E-15 6.48485338187454E-15 4.461673121880458E-12 1.147578361662991E-11 -1.039744678499664E-11 4.217346486984307E-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 17.53   n/a E2021B25  

349222 (2007 TW4)          Discovered 2007-Oct-02 by Charleston at Charleston
Reference: 20121228/Numbers.arcLast Updated: 2013-01-02

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