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117157 (2004 QR9)
Classification: Main-belt Asteroid          SPK-ID: 2117157
[ 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 .1366315646915265 6.3061e-08  
a 2.467654534146277 1.4966e-08 au
q 2.130495034027731 1.5178e-07 au
i 6.618937829661275 7.0829e-06 deg
node 22.43743372808465 3.8188e-05 deg
peri 346.7912524428056 4.2712e-05 deg
M 356.8488494110571 1.859e-05 deg
tp 2459012.893432997418
(2020-Jun-12.39343300)		 7.3149e-05 TDB
period 1415.875171033035
3.88		 1.288e-05
3.526e-08		 d
yr
n .2542597026666841 2.313e-09 deg/d
Q 2.804814034264822 1.7011e-08 au
   Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      7899 days (21.63 yr)  
   first obs. used      1999-03-13  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55797  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:20:46  

Additional Information
 Earth MOID = 1.13072 au 
 Jupiter MOID = 2.65719 au 
 T_jup = 3.464 
[ 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 15.7   n/a MPO257545  

117157 (2004 QR9)          Discovered 2004-Aug-21 by Siding Spring Survey at Siding Spring
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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