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308229 (2005 ET252)
Classification: Main-belt Asteroid          SPK-ID: 2308229
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09980532022880287 5.1618e-08  
a 2.531117894038359 1.8194e-08 au
q 2.278498862087007 1.252e-07 au
i 14.70142831369159 4.6863e-06 deg
node 196.0128954657498 2.2005e-05 deg
peri 153.2939608911056 3.28e-05 deg
M 129.6568770520501 2.5027e-05 deg
tp 2458470.763321465890
(2018-Dec-18.26332147)
0.00010198 TDB
period 1470.845269516419
4.03
1.5859e-05
4.342e-08
d
yr
n .2447572205323542 2.639e-09 deg/d
Q 2.78373692598971 2.0009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      268  
   data-arc span      7830 days (21.44 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51464  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:16:03  

Additional Information
 Earth MOID = 1.28278 au 
 Jupiter MOID = 2.6359 au 
 T_jup = 3.398 
[ 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 16.0   n/a MPO450234  

308229 (2005 ET252)          Discovered 2005-Mar-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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