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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
(2011 EP51)
Classification: Aten [NEO]          SPK-ID: 3559843
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2457703.5 (2016-Nov-11.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3075680141919901 1.5385e-07  
a .828272748191852 6.6552e-09 au
q .5735225438211419 1.2741e-07 au
i 3.408069068475762 5.82e-06 deg
node 160.1124108184983 3.0182e-05 deg
peri 169.6693164230421 6.0015e-05 deg
M 44.90396570277022 7.6147e-05 deg
tp 2457669.156806068184
(2016-Oct-07.65680607)		 5.8227e-05 TDB
period 275.3331386651008
0.75		 3.3185e-06
9.086e-09		 d
yr
n 1.307506977712128 1.5759e-08 deg/d
Q 1.083022952562562 8.7021e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -3.229225848557937E-13 5.002E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
   Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      2176 days (5.96 yr)  
   first obs. used      2011-03-12  
   last obs. used      2017-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38815  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-14 16:01:31  

Additional Information
 Earth MOID = .0255378 au 
 Jupiter MOID = 4.21255 au 
 T_jup = 7.040 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.2   n/a MPO411533  

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-08 21:23 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin