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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2651844641136483 4.7819e-08  
a 3.018230114951016 2.3816e-08 au
q 2.217842379346056 1.3784e-07 au
i 8.124489089904911 4.1003e-06 deg
node 137.138892611412 4.7666e-05 deg
peri 230.6620998054622 4.8907e-05 deg
M 338.2928524707735 1.3808e-05 deg
tp 2459115.985432739138
(2020-Sep-23.48543274)
7.4427e-05 TDB
period 1915.256517702915
5.24
2.267e-05
6.207e-08
d
yr
n .1879643779684249 2.2248e-09 deg/d
Q 3.818617850555976 3.0132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      390  
   data-arc span      7316 days (20.03 yr)  
   first obs. used      1999-08-13  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55187  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:57:59  

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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