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 ]  
146945 (2002 EC20)
Classification: Main-belt Asteroid          SPK-ID: 2146945
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1816634277490847 5.2811e-08  
a 3.04143841339504 2.3243e-08 au
q 2.488920285929959 1.5731e-07 au
i .2177088747444496 5.2754e-06 deg
node 206.8320917771129 0.0013948 deg
peri 354.8493125648851 0.0013949 deg
M 128.734234101909 1.6901e-05 deg
tp 2458307.698977751816
(2018-Jul-08.19897775)
8.6574e-05 TDB
period 1937.389613177088
5.30
2.2209e-05
6.08e-08
d
yr
n .1858170383238728 2.1301e-09 deg/d
Q 3.593956540860121 2.7466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      418  
   data-arc span      9482 days (25.96 yr)  
   first obs. used      1994-11-01  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58576  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:22:24  

Additional Information
 Earth MOID = 1.486 au 
 Jupiter MOID = 1.36631 au 
 T_jup = 3.214 
[ 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 15.6   n/a MPO449801  

146945 (2002 EC20)          Discovered 2002-Mar-05 by Spacewatch at Kitt Peak
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ 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-Dec-01 22:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin