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117931 (4776 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117931
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481735687168446 4.37e-08  
a 3.125942097021402 2.2586e-08 au
q 2.662760100903524 1.3981e-07 au
i 2.256636253430744 5.5583e-06 deg
node 123.6581364921397 0.00014958 deg
peri 332.7714429307476 0.00015179 deg
M 227.3316465337017 2.7273e-05 deg
tp 2459744.434430498545
(2022-Jun-13.93443050)
0.00015675 TDB
period 2018.690878284772
5.53
2.1878e-05
5.99e-08
d
yr
n .1783333960996953 1.9328e-09 deg/d
Q 3.58912409313928 2.5932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      21858 days (59.84 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56018  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:01:06  

Additional Information
 Earth MOID = 1.67984 au 
 Jupiter MOID = 1.58295 au 
 T_jup = 3.196 
[ 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 15.0   n/a MPO396009  

117931 (4776 P-L)          Discovered 1960-Sep-24 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
 4776 P-L = 1999 VB149 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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