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268269 (2005 OB21)
Classification: Main-belt Asteroid          SPK-ID: 2268269
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1410671291304529 7.044e-08  
a 2.317469985534698 1.3477e-08 au
q 1.990551147829326 1.664e-07 au
i 6.308525838579975 7.3977e-06 deg
node 340.1685436831409 5.1458e-05 deg
peri 323.6436441452702 5.6182e-05 deg
M 86.36799649547316 1.9539e-05 deg
tp 2458691.349503329280
(2019-Jul-26.84950333)
7.0238e-05 TDB
period 1288.604382611706
3.53
1.124e-05
3.077e-08
d
yr
n .2793720127432458 2.4369e-09 deg/d
Q 2.644388823240071 1.5378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      6197 days (16.97 yr)  
   first obs. used      2002-11-13  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61421  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 04:15:49  

Additional Information
 Earth MOID = .979724 au 
 Jupiter MOID = 2.59256 au 
 T_jup = 3.559 
[ 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 17.1   n/a MPO338801  

268269 (2005 OB21)          Discovered 2005-Jul-28 by NEAT at Palomar
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

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