Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
85188 (1991 PK12)
Classification: Main-belt Asteroid          SPK-ID: 2085188
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787015296222202 9.0871e-08  
a 2.785755786074695 2.3364e-08 AU
q 2.287936965949196 2.5001e-07 AU
i 8.009120639698251 9.8055e-06 deg
node 237.9585470586973 5.6857e-05 deg
peri 107.6737577944842 6.279e-05 deg
M 319.0595804762458 2.938e-05 deg
tp 2456993.635797216595
(2014-Dec-02.13579722)
0.00013991 JED
period 1698.294443652016
4.65
2.1365e-05
5.849e-08
d
yr
n .2119773760937798 2.6667e-09 deg/d
Q 3.283574606200192 2.7539e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      627  
   data-arc span      21455 days (58.74 yr)  
   first obs. used      1954-10-06  
   last obs. used      2013-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61361  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-06 13:56:00  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-25 06:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin