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 ]  
186331 (2002 EU20)
Classification: Main-belt Asteroid          SPK-ID: 2186331
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1614101896734832 3.935e-08  
a 3.118647079883189 2.2518e-08 au
q 2.615265663194589 1.1586e-07 au
i 10.65999253949036 5.5856e-06 deg
node 12.97496032155134 2.076e-05 deg
peri 247.5637971000635 2.9689e-05 deg
M 85.92957373544566 1.8376e-05 deg
tp 2458720.337842198692
(2019-Aug-24.83784220)
0.00010262 TDB
period 2011.628468455529
5.51
2.1788e-05
5.965e-08
d
yr
n .1789594876216868 1.9383e-09 deg/d
Q 3.622028496571789 2.6153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      889  
   data-arc span      9929 days (27.18 yr)  
   first obs. used      1993-11-06  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50771  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:50:50  

Additional Information
 Earth MOID = 1.62234 au 
 Jupiter MOID = 1.56791 au 
 T_jup = 3.170 
[ 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 14.68   n/a E2021B55  
rotation period rot_per 31.961 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

186331 (2002 EU20)          Discovered 2002-Mar-09 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ 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 2021-Jun-19 22:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin