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312824 (2011 SN123)
Classification: Outer Main-belt Asteroid          SPK-ID: 2312824
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1433283587269899 4.824e-08  
a 3.215420790834099 3.4917e-08 au
q 2.754559806267207 1.4967e-07 au
i 5.744733112078116 6.6202e-06 deg
node 27.99876692262455 5.2623e-05 deg
peri 78.73824155090981 5.7967e-05 deg
M 105.9926262949122 2.5655e-05 deg
tp 2458380.447728632264
(2018-Sep-18.94772863)
0.00014512 TDB
period 2105.984401889472
5.77
3.4304e-05
9.392e-08
d
yr
n .1709414370196716 2.7844e-09 deg/d
Q 3.67628177540099 3.9922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      7089 days (19.41 yr)  
   first obs. used      2000-11-30  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53032  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:28:18  

Additional Information
 Earth MOID = 1.77875 au 
 Jupiter MOID = 1.50007 au 
 T_jup = 3.166 
[ 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 15.6   n/a MPO471274  

312824 (2011 SN123)          Discovered 2002-Mar-11 by NEAT at Palomar
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 SN123 = 2002 EJ121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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