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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787016041544793 7.2247e-08  
a 2.785755795333951 2.7342e-08 AU
q 2.287936765925136 2.0435e-07 AU
i 8.009119265394229 8.1329e-06 deg
node 237.9585316931359 5.1497e-05 deg
peri 107.673753187692 5.6245e-05 deg
M 319.0595906606089 2.2626e-05 deg
tp 2456993.635750134933
(2014-Dec-02.13575013)
0.00010786 JED
period 1698.294452119167
4.65
2.5003e-05
6.845e-08
d
yr
n .2119773750369287 3.1208e-09 deg/d
Q 3.283574824742765 3.2228e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      650  
   data-arc span      21825 days (59.75 yr)  
   first obs. used      1954-10-06  
   last obs. used      2014-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58012  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 14:23:35  

Additional Information
 Earth MOID = 1.29557 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 14.0 mag n/a MPO266307  

85188 (1991 PK12)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675)
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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