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

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1753588642171951 4.055e-08  
a 2.786356649760691 1.296e-08 au
q 2.297744312354627 1.1274e-07 au
i 8.021256354974087 3.9857e-06 deg
node 237.8487052734299 3.171e-05 deg
peri 108.0519968641212 3.3689e-05 deg
M 340.0967760709762 1.04e-05 deg
tp 2458694.423531254945
(2019-Jul-29.92353125)
4.9095e-05 TDB
period 1698.843934648862
4.65
1.1853e-05
3.245e-08
d
yr
n .2119088120206929 1.4785e-09 deg/d
Q 3.274968987166754 1.5233e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1315  
   data-arc span      23766 days (65.07 yr)  
   first obs. used      1954-10-06  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5094  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:09:24  

Additional Information
 Earth MOID = 1.30578 au 
 Jupiter MOID = 2.23214 au 
 T_jup = 3.294 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO432396  
diameter diameter 3.813 km 0.451 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.305   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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