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491984 (2013 EG44)
Classification: Main-belt Asteroid          SPK-ID: 2491984
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08404035890634716 5.8756e-08  
a 3.112786833087732 5.7772e-08 au
q 2.851187110436087 1.9714e-07 au
i 9.120581427518699 7.3319e-06 deg
node 345.95014859 3.868e-05 deg
peri 41.25558433309429 5.8724e-05 deg
M 287.9334538607252 4.9259e-05 deg
tp 2459602.063014518343
(2022-Jan-22.56301452)
0.00028041 TDB
period 2005.961059202472
5.49
5.5845e-05
1.529e-07
d
yr
n .1794650989601605 4.9962e-09 deg/d
Q 3.374386555739378 6.2628e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      7166 days (19.62 yr)  
   first obs. used      1999-09-18  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49645  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 15:50:38  

Additional Information
 Earth MOID = 1.86034 au 
 Jupiter MOID = 2.05973 au 
 T_jup = 3.194 
[ 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 15.9   n/a E2016V01  

491984 (2013 EG44)          Discovered 2011-Nov-24 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2017-05-15
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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