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8170 (1991 PZ11)
Classification: Main-belt Asteroid          SPK-ID: 2008170
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267225283631667 6.4798e-08  
a 2.650843467847359 2.8489e-08 AU
q 2.314921881306756 1.7604e-07 AU
i 11.61145781165091 8.6339e-06 deg
node 305.0080088713142 3.6858e-05 deg
peri 283.9691881722488 6.0585e-05 deg
M 240.5462227493917 5.4641e-05 deg
tp 2457523.584604959923
(2016-May-15.08460496)
0.00024296 JED
period 1576.429495322746
4.32
2.5413e-05
6.958e-08
d
yr
n .2283641615867485 3.6814e-09 deg/d
Q 2.986765054387961 3.2099e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1067  
   data-arc span      8674 days (23.75 yr)  
   first obs. used      1991-08-07  
   last obs. used      2015-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45876  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:00:38  

Additional Information
 Earth MOID = 1.33848 AU 
 T_jup = 3.350 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO337324  

8170 (1991 PZ11)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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