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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .265146767889172 3.9444e-08  
a 3.018286733622317 1.3596e-08 au
q 2.217997761639594 1.2e-07 au
i 8.124767805778768 3.1367e-06 deg
node 137.1389886628498 3.3095e-05 deg
peri 230.7285143930294 3.4015e-05 deg
M 52.68708653234259 6.1596e-06 deg
tp 2459116.188540795316
(2020-Sep-23.68854080)
3.2882e-05 TDB
period 1915.310410108556
5.24
1.2941e-05
3.543e-08
d
yr
n .1879590890855106 1.27e-09 deg/d
Q 3.818575705605041 1.7201e-08 au
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      7877 days (21.57 yr)  
   first obs. used      1999-08-13  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45981  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:34  

Additional Information
 Earth MOID = 1.2261 au 
 Jupiter MOID = 1.68527 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 15.51   n/a MPCxxxxx  

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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