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91426 (1999 PE4)
Classification: Main-belt Asteroid          SPK-ID: 2091426
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2651845313132918 4.2935e-08  
a 3.018230125478459 1.9672e-08 au
q 2.217842184257796 1.2687e-07 au
i 8.124487352522971 3.9642e-06 deg
node 137.1388811554328 4.3571e-05 deg
peri 230.6621254923975 4.4617e-05 deg
M 338.2928385760407 1.0827e-05 deg
tp 2459115.985507265510
(2020-Sep-23.48550727)
5.8224e-05 TDB
period 1915.2565277234
5.24
1.8724e-05
5.126e-08
d
yr
n .1879643769850087 1.8376e-09 deg/d
Q 3.818618066699122 2.4888e-08 au
  Orbit Determination Parameters
   # obs. used (total)      415  
   data-arc span      7658 days (20.97 yr)  
   first obs. used      1999-08-13  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:17:19  

Additional Information
 Earth MOID = 1.22671 au 
 Jupiter MOID = 1.68345 au 
 T_jup = 3.178 
[ 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 15.4   n/a MPO439643  

91426 (1999 PE4)          Discovered 1999-Aug-13 by Broughton, J. at Reedy Creek
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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