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85188 (1991 PK12)
Classification: Main-belt Asteroid          SPK-ID: 2085188
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1783758191934267 5.8243e-08  
a 2.784716347450469 2.2091e-08 au
q 2.287990287752665 1.6609e-07 au
i 8.009871052824383 6.3774e-06 deg
node 237.9495145610888 4.5502e-05 deg
peri 107.6239545343213 4.9731e-05 deg
M 86.34057538923054 1.893e-05 deg
tp 2456993.417614209357
(2014-Dec-01.91761421)
8.7871e-05 JED
period 1697.34401495442
4.65
2.0198e-05
5.53e-08
d
yr
n .2120960729399735 2.5238e-09 deg/d
Q 3.281442407148273 2.6032e-08 au
  Orbit Determination Parameters
   # obs. used (total)      794  
   data-arc span      22352 days (61.20 yr)  
   first obs. used      1954-10-06  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56738  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 16:15:22  

Additional Information
 Earth MOID = 1.295 au 
 Jupiter MOID = 2.21743 au 
 T_jup = 3.294 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO302494  

85188 (1991 PK12)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1991 PK12 = 2000 LC20 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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