Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
321346 (2009 KK4)
Classification: Main-belt Asteroid          SPK-ID: 2321346
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1616276593244884 4.7415e-08  
a 2.754717667298214 2.4802e-08 au
q 2.309479098632989 1.2598e-07 au
i 10.14993600320481 5.4905e-06 deg
node 136.891157725335 2.5841e-05 deg
peri 179.4342777191397 3.1058e-05 deg
M 99.38855399968793 1.7072e-05 deg
tp 2458539.450091935786
(2019-Feb-24.95009194)
7.6355e-05 TDB
period 1669.990760743316
4.57
2.2553e-05
6.175e-08
d
yr
n .2155700549144137 2.9113e-09 deg/d
Q 3.199956235963439 2.881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      5206 days (14.25 yr)  
   first obs. used      2005-07-29  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52454  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:55:06  

Additional Information
 Earth MOID = 1.29597 au 
 Jupiter MOID = 2.10787 au 
 T_jup = 3.302 
[ 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 16.3   n/a MPO450263  

321346 (2009 KK4)          Discovered 2009-May-24 by Lowe, A. at Mayhill
Reference: 20120308/Numbers.arcLast Updated: 2012-03-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-14 02:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin