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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371946603099337 6.373e-08  
a 2.469272815569951 1.7001e-08 au
q 2.130501770425278 1.5456e-07 au
i 6.620326309302395 7.1948e-06 deg
node 22.48892509546916 4.0317e-05 deg
peri 346.5275190222565 4.4579e-05 deg
M 255.4419731884765 1.9012e-05 deg
tp 2459012.129903982733
(2020-Jun-11.62990398)
7.6508e-05 TDB
period 1417.268190235703
3.88
1.4637e-05
4.007e-08
d
yr
n .254009793263002 2.6233e-09 deg/d
Q 2.808043860714624 1.9334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      6977 days (19.10 yr)  
   first obs. used      1999-03-13  
   last obs. used      2018-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5867  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:47:19  

Additional Information
 Earth MOID = 1.12987 au 
 Jupiter MOID = 2.65041 au 
 T_jup = 3.463 
[ 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

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