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228179 (2009 TF4)
Classification: Main-belt Asteroid          SPK-ID: 2228179
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 .1846655639946869 5.8662e-08  
a 2.369431738132794 1.6783e-08 au
q 1.931879289863591 1.4054e-07 au
i .4846474528132509 6.832e-06 deg
node 203.6745919635975 0.00084094 deg
peri 187.6440367646649 0.00084119 deg
M 331.460223150102 2.3439e-05 deg
tp 2459106.111886758687
(2020-Sep-13.61188676)
8.7369e-05 TDB
period 1332.185582006865
3.65
1.4154e-05
3.875e-08
d
yr
n .2702326198859468 2.8711e-09 deg/d
Q 2.806984186401998 1.9882e-08 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      7118 days (19.49 yr)  
   first obs. used      1998-09-25  
   last obs. used      2018-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64078  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:33:10  

Additional Information
 Earth MOID = .937534 au 
 Jupiter MOID = 2.6299 au 
 T_jup = 3.522 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.5   n/a MPO437079  

228179 (2009 TF4)          Discovered 2009-Oct-13 by Lowe, A. at RAS
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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