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173710 (2001 QU121)
Classification: Main-belt Asteroid          SPK-ID: 2173710
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1079031540788757 7.4718e-08  
a 2.771185592491632 2.7051e-08 au
q 2.472165926523847 2.0889e-07 au
i 6.365032453519775 8.7671e-06 deg
node 350.7965654828132 4.8549e-05 deg
peri 17.57039645820954 5.7643e-05 deg
M 350.4368771341257 3.0636e-05 deg
tp 2459045.260412510776
(2020-Jul-14.76041251)		 0.00014361 TDB
period 1684.9881288654
4.61		 2.4672e-05
6.755e-08		 d
yr
n .2136513568451125 3.1284e-09 deg/d
Q 3.070205258459417 2.997e-08 au
   Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      6100 days (16.70 yr)  
   first obs. used      2001-08-10  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56229  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 05:53:12  

Additional Information
 Earth MOID = 1.47161 au 
 Jupiter MOID = 2.38993 au 
 T_jup = 3.320 
[ 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 15.9   n/a MPO436862  

173710 (2001 QU121)          Discovered 2001-Aug-19 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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