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 ]  
23981 Patjohnson (1999 LC4)
Classification: Main-belt Asteroid          SPK-ID: 2023981
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07924213395415833 5.5075e-08  
a 2.304767036845437 1.5707e-08 au
q 2.122132378578602 1.2695e-07 au
i 6.916274976401785 5.6173e-06 deg
node 167.1647132931386 4.5103e-05 deg
peri 247.367131552954 6.5307e-05 deg
M 117.4230504700236 4.1569e-05 deg
tp 2456983.640373047356
(2014-Nov-22.14037305)
0.0001495 JED
period 1278.023906739354
3.50
1.3065e-05
3.577e-08
d
yr
n .2816848715439718 2.8795e-09 deg/d
Q 2.487401695112271 1.6952e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1014  
   data-arc span      7265 days (19.89 yr)  
   first obs. used      1995-04-26  
   last obs. used      2015-03-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52222  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:16:14  

Additional Information
 Earth MOID = 1.14221 au 
 Jupiter MOID = 2.75276 au 
 T_jup = 3.575 
[ 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 14.6 mag n/a MPO324530  

23981 Patjohnson           Discovered 1999 June 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Patricia Johnson mentored a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. She teaches at the St. Paul's School, Clearwater, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071026/MPCPages.arcLast Updated: 2007-10-28

[ show close-approach data ]
Alternate Designations
 1999 LC4 = 2000 NC1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-06 00:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin