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117968 (9564 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117968
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2210872374062654 4.1978e-08  
a 2.349274995268771 1.0179e-08 au
q 1.829880276657181 1.008e-07 au
i 3.599482910827742 4.1183e-06 deg
node 60.51992425947697 7.8092e-05 deg
peri 329.6877840639867 7.8711e-05 deg
M 182.7023088106581 1.1372e-05 deg
tp 2459648.238618448398
(2022-Mar-09.73861845)
4.4272e-05 TDB
period 1315.222443547766
3.60
8.5482e-06
2.34e-08
d
yr
n .2737179568111025 1.779e-09 deg/d
Q 2.868669713880361 1.243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      21741 days (59.52 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:16:10  

Additional Information
 Earth MOID = .836536 au 
 Jupiter MOID = 2.57391 au 
 T_jup = 3.523 
[ 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 16.4   n/a MPO417614  

117968 (9564 P-L)          Discovered 1960-Oct-17 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 9564 P-L = 2001 AA31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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