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274983 (2009 TH4)
Classification: Main-belt Asteroid          SPK-ID: 2274983
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1213378426879087 5.2775e-08  
a 2.57792463062977 2.5754e-08 au
q 2.26512481733713 1.4029e-07 au
i 7.660420642544945 1.1243e-05 deg
node 163.5959293319357 4.1161e-05 deg
peri 272.0516068252582 9.5079e-05 deg
M 173.0439762996542 7.7691e-05 deg
tp 2458273.795689809673
(2018-Jun-04.29568981)
0.00032402 TDB
period 1511.83275640575
4.14
2.2656e-05
6.203e-08
d
yr
n .2381215769235404 3.5684e-09 deg/d
Q 2.89072444392241 2.8879e-08 au
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      8682 days (23.77 yr)  
   first obs. used      1995-06-23  
   last obs. used      2019-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66202  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:33:10  

Additional Information
 Earth MOID = 1.29573 au 
 Jupiter MOID = 2.36534 au 
 T_jup = 3.403 
[ 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 16.7   n/a MPO338840  

274983 (2009 TH4)          Discovered 2009-Oct-13 by Lowe, A. at Mayhill
Reference: 20110418/Numbers.arcLast Updated: 2011-04-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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