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JPL Small-Body Database Browser
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305848 (2009 EM4)
Classification: Main-belt Asteroid          SPK-ID: 2305848
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1478935033909446 5.2812e-08  
a 2.366693151928938 2.0164e-08 au
q 2.016674610238811 1.2831e-07 au
i 3.082549929171639 6.6563e-06 deg
node 82.73010533607524 0.00010587 deg
peri 77.50435888360238 0.00010882 deg
M 292.6527937821551 2.4361e-05 deg
tp 2458849.287434569716
(2019-Dec-31.78743457)
9.1132e-05 TDB
period 1329.876641881636
3.64
1.6996e-05
4.653e-08
d
yr
n .2707017994470808 3.4596e-09 deg/d
Q 2.716711693619066 2.3146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      196  
   data-arc span      6543 days (17.91 yr)  
   first obs. used      2000-11-18  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58959  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 04:37:33  

Additional Information
 Earth MOID = 1.02852 au 
 Jupiter MOID = 2.2668 au 
 T_jup = 3.531 
[ 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 17.4   n/a MPO418595  

305848 (2009 EM4)          Discovered 2009-Mar-15 by La Sagra at La Sagra
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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