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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 ]

[ 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 .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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457569.5 (2016-Jun-30.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144418564315907 4.8232e-08  
q 2.7522834126397 1.5001e-07 au
tp 2458380.891557957586
(2018-Sep-19.39155796)
0.00014408 TDB
node 28.01120527769956 5.2618e-05 deg
peri 78.85625319381651 5.7882e-05 deg
i 5.745072549171038 6.6201e-06 deg
  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
 Jupiter MOID = 1.50007 au 
 T_jup = 3.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.326343206458728E-15 -7.100004817644344E-15 6.518068684326805E-13 2.963595957244087E-15 4.165605089194264E-14 -2.280391018738413E-15
q -7.100004817644344E-15 2.250158304397915E-14 -1.003720219928339E-13 -1.1111466535567E-14 1.347617266274809E-13 7.65346888655869E-15
tp 6.518068684326805E-13 -1.003720219928339E-13 2.075840175319378E-8 1.384655152678213E-13 3.486598286183993E-9 2.261762966368498E-13
node 2.963595957244087E-15 -1.1111466535567E-14 1.384655152678213E-13 2.768654874079998E-9 -2.754461084916083E-9 -2.355368066457751E-11
peri 4.165605089194264E-14 1.347617266274809E-13 3.486598286183993E-9 -2.754461084916083E-9 3.350326118922729E-9 2.351780165896467E-11
i -2.280391018738413E-15 7.65346888655869E-15 2.261762966368498E-13 -2.355368066457751E-11 2.351780165896467E-11 4.382528090483057E-11

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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