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305864 (2009 ER25)
Classification: Main-belt Asteroid          SPK-ID: 2305864
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1322744037621323 1.0425e-07  
a 2.681678603717526 4.2752e-08 au
q 2.326961165329123 2.5634e-07 au
i 12.01188399447298 8.5013e-06 deg
node 25.06978633339788 3.7214e-05 deg
peri 133.3290702177174 4.8467e-05 deg
M 222.3043079565557 3.8887e-05 deg
tp 2459614.016672874006
(2022-Feb-03.51667287)
0.00018424 TDB
period 1604.01533960087
4.39
3.8357e-05
1.05e-07
d
yr
n .2244367563776412 5.367e-09 deg/d
Q 3.036396042105929 4.8407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      5671 days (15.53 yr)  
   first obs. used      2004-01-18  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60489  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:55:05  

Additional Information
 Earth MOID = 1.35117 au 
 Jupiter MOID = 1.97182 au 
 T_jup = 3.332 
[ 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 16.8   n/a MPO450229  

305864 (2009 ER25)          Discovered 2009-Mar-07 by Mt. Lemmon Survey at Mount Lemmon
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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