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305865 (2009 EW25)
Classification: Main-belt Asteroid          SPK-ID: 2305865
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07714861971264873 4.7192e-08  
a 2.643415600483678 2.7088e-08 au
q 2.43947973557948 1.2524e-07 au
i 9.997892529475521 5.2579e-06 deg
node 27.88162985744328 3.1235e-05 deg
peri 211.4941913630047 5.322e-05 deg
M 177.7552124626362 4.8249e-05 deg
tp 2458225.384460068051
(2018-Apr-16.88446007)
0.00020351 TDB
period 1569.808223959428
4.30
2.4129e-05
6.606e-08
d
yr
n .2293273754751997 3.525e-09 deg/d
Q 2.847351465387877 2.9178e-08 au
  Orbit Determination Parameters
   # obs. used (total)      243  
   data-arc span      6259 days (17.14 yr)  
   first obs. used      2002-10-09  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56623  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:58:05  

Additional Information
 Earth MOID = 1.43425 au 
 Jupiter MOID = 2.14983 au 
 T_jup = 3.368 
[ 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 16.1   n/a MPO455253  

305865 (2009 EW25)          Discovered 2009-Mar-07 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2009 EW25 = 2002 TS243 = 2005 JB167 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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