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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .178607932506841 6.6673e-08  
a 2.785501228090855 2.4512e-08 AU
q 2.287988612746281 1.9257e-07 AU
i 8.008999428060925 6.7578e-06 deg
node 237.9527828532435 5.0107e-05 deg
peri 107.666517447836 5.4187e-05 deg
M 1.46304235817941 1.9017e-05 deg
tp 2456993.599066259091
(2014-Dec-02.09906626)
8.9678e-05 JED
period 1698.061667755705
4.65
2.2414e-05
6.137e-08
d
yr
n .2120064346519317 2.7984e-09 deg/d
Q 3.283013843435429 2.889e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      21971 days (60.15 yr)  
   first obs. used      1954-10-06  
   last obs. used      2014-12-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57686  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 18:57:46  

Additional Information
 Earth MOID = 1.29726 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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