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312832 (2011 SN257)
Classification: Main-belt Asteroid          SPK-ID: 2312832
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201006011607366 9.401e-08  
a 2.348426010369542 2.3512e-08 au
q 2.06637863474265 2.301e-07 au
i 5.854019228545892 6.3888e-06 deg
node 233.1487928972672 9.7452e-05 deg
peri 144.7051848301813 0.00010288 deg
M 147.5611516213096 3.3386e-05 deg
tp 2458461.692931126883
(2018-Dec-09.19293113)
0.00012059 TDB
period 1314.509562056782
3.60
1.9741e-05
5.405e-08
d
yr
n .2738663988390593 4.1129e-09 deg/d
Q 2.630473385996434 2.6336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      106  
   data-arc span      6539 days (17.90 yr)  
   first obs. used      2002-03-05  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:48:26  

Additional Information
 Earth MOID = 1.07194 au 
 Jupiter MOID = 2.82834 au 
 T_jup = 3.543 
[ 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 17.5   n/a MPO455306  

312832 (2011 SN257)          Discovered 2009-Jan-01 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 SN257 = 2010 JP168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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