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JPL Small-Body Database Browser
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117280 (2004 TW121)
Classification: Main-belt Asteroid          SPK-ID: 2117280
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1234375157548088 4.0896e-08  
a 2.742764658753253 1.9318e-08 au
q 2.404204602976665 1.1423e-07 au
i .8185784760231578 4.6934e-06 deg
node 242.4515994702646 0.00035474 deg
peri 71.72661189111452 0.0003554 deg
M 125.468419598402 2.3298e-05 deg
tp 2458022.253289314053
(2017-Sep-25.75328931)
0.00010616 TDB
period 1659.133162856802
4.54
1.7529e-05
4.799e-08
d
yr
n .2169807752984268 2.2924e-09 deg/d
Q 3.08132471452984 2.1703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      8478 days (23.21 yr)  
   first obs. used      1995-09-27  
   last obs. used      2018-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59678  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:11:15  

Additional Information
 Earth MOID = 1.38961 au 
 Jupiter MOID = 2.1694 au 
 T_jup = 3.338 
[ 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 16.0   n/a MPO417610  

117280 (2004 TW121)          Discovered 2004-Oct-07 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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