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216751 (2005 ON31)
Classification: Main-belt Asteroid          SPK-ID: 2216751
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06257643933274409 4.6671e-08  
a 3.06609419703991 3.553e-08 au
q 2.874228939530363 1.5526e-07 au
i 11.6174724942556 4.7802e-06 deg
node 125.9202468531502 2.9699e-05 deg
peri 184.784739396385 5.8565e-05 deg
M 314.9744596466911 5.2524e-05 deg
tp 2459445.763600456616
(2021-Aug-19.26360046)
0.00028778 TDB
period 1960.995814187778
5.37
3.4086e-05
9.332e-08
d
yr
n .1835801980786521 3.191e-09 deg/d
Q 3.257959454549457 3.7754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      6732 days (18.43 yr)  
   first obs. used      2002-01-08  
   last obs. used      2020-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51295  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:08  

Additional Information
 Earth MOID = 1.85778 au 
 Jupiter MOID = 1.98574 au 
 T_jup = 3.198 
[ 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 15.59   n/a E2021B55  

216751 (2005 ON31)          Discovered 2005-Jul-18 by NEAT at Palomar
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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