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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456685.5 (2014-Jan-28.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110988569892444 7.5106e-08  
q 2.462840679915844 2.1082e-07 au
tp 2457358.197072745293
(2015-Dec-01.69707275)
0.0001309 TDB
node 351.0120437757674 4.8471e-05 deg
peri 17.20886360271405 5.6921e-05 deg
i 6.372798404076862 8.7743e-06 deg
  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
 Jupiter MOID = 2.38993 au 
 T_jup = 3.320 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.640852640474319E-15 -1.573101215794757E-14 -3.170928206706739E-12 3.026018993967781E-14 -6.933839751291556E-13 -5.159170238018548E-16
q -1.573101215794757E-14 4.444299493544589E-14 9.42872198297359E-12 -8.879297542482726E-14 2.010403115984232E-12 2.850775506811999E-15
tp -3.170928206706739E-12 9.42872198297359E-12 1.713575242711121E-8 -4.927714587474055E-11 3.914106503531358E-9 1.715133565548694E-12
node 3.026018993967781E-14 -8.879297542482726E-14 -4.927714587474055E-11 2.349401649917718E-9 -2.344084041862277E-9 -1.171319398862936E-11
peri -6.933839751291556E-13 2.010403115984232E-12 3.914106503531358E-9 -2.344084041862277E-9 3.239947328519871E-9 1.181603984805828E-11
i -5.159170238018548E-16 2.850775506811999E-15 1.715133565548694E-12 -1.171319398862936E-11 1.181603984805828E-11 7.698855834376767E-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 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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