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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782139537658957 5.475e-08  
a 2.784970551334045 2.1158e-08 au
q 2.288649938259219 1.548e-07 au
i 8.009421321401197 6.205e-06 deg
node 237.9442207839605 4.317e-05 deg
peri 107.6439239807911 4.7398e-05 deg
M 128.7566012912323 1.9015e-05 deg
tp 2456993.349521912215
(2014-Dec-01.84952191)
8.7401e-05 JED
period 1697.576434292589
4.65
1.9345e-05
5.296e-08
d
yr
n .2120670343483053 2.4167e-09 deg/d
Q 3.281291164408871 2.4929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      825  
   data-arc span      22392 days (61.31 yr)  
   first obs. used      1954-10-06  
   last obs. used      2016-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56299  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 04:35:29  

Additional Information
 Earth MOID = 1.29668 au 
 Jupiter MOID = 2.21829 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 14.2 mag n/a MPO366210  

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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