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160514 (1991 PQ9)
Classification: Main-belt Asteroid          SPK-ID: 2160514
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .239669976207551 6.9676e-08  
a 3.167296772308375 3.0024e-08 au
q 2.408190830246974 2.3133e-07 au
i 8.347226217273786 6.9714e-06 deg
node 308.1471629104869 2.9682e-05 deg
peri 12.16040154305367 3.2005e-05 deg
M 45.07235619154377 9.0027e-06 deg
tp 2458742.725872741541
(2019-Sep-16.22587274)
5.1553e-05 TDB
period 2058.882509240899
5.64
2.9275e-05
8.015e-08
d
yr
n .1748521338076404 2.4862e-09 deg/d
Q 3.926402714369777 3.7219e-08 au
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      10352 days (28.34 yr)  
   first obs. used      1991-08-03  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51638  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 12:24:01  

Additional Information
 Earth MOID = 1.39596 au 
 Jupiter MOID = 1.40734 au 
 T_jup = 3.142 
[ 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 14.6   n/a MPO493914  

160514 (1991 PQ9)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

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Alternate Designations
 1991 PQ9 = 2003 WO9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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