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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1258673346125095 6.5024e-08  
a 2.65132547169378 2.949e-08 au
q 2.317610201381429 1.7662e-07 au
i 11.6039570192427 8.6312e-06 deg
node 304.9923346568853 3.6893e-05 deg
peri 283.7910564821142 6.0747e-05 deg
M 331.9738127261465 5.5469e-05 deg
tp 2457523.259330730802
(2016-May-14.75933073)
0.00024391 JED
period 1576.859479002991
4.32
2.6309e-05
7.203e-08
d
yr
n .2283018904307307 3.809e-09 deg/d
Q 2.985040742006131 3.3202e-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 = 1.33891 au 
 Jupiter MOID = 2.17138 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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