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JPL Small-Body Database Browser
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379669 (2011 EM81)
Classification: Main-belt Asteroid          SPK-ID: 2379669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03759310706950642 7.1056e-08  
a 2.713393186939327 5.4041e-08 au
q 2.611388306341047 2.1849e-07 au
i 6.095122031622812 7.8529e-06 deg
node 10.77152133290355 6.9732e-05 deg
peri 11.07638874097512 0.00012761 deg
M 75.72109931064441 0.00010657 deg
tp 2458257.114516336939
(2018-May-18.61451634)
0.00048436 TDB
period 1632.553875262139
4.47
4.8772e-05
1.335e-07
d
yr
n .2205133964979837 6.5877e-09 deg/d
Q 2.815398067537606 5.6073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      189  
   data-arc span      4306 days (11.79 yr)  
   first obs. used      2007-03-14  
   last obs. used      2018-12-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46474  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 03:46:39  

Additional Information
 Earth MOID = 1.61254 au 
 Jupiter MOID = 2.343 au 
 T_jup = 3.353 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO423397  

379669 (2011 EM81)          Discovered 2007-Mar-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-11-20

Alternate Designations
 2011 EM81 = 2007 EN181 = 2009 WD176 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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