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392742 (2012 SS31)
Classification: Main-belt Asteroid          SPK-ID: 2392742
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08535402630113129 6.2387e-08  
a 2.590125951925166 3.8352e-08 au
q 2.369048273301303 1.5195e-07 au
i 4.900240851170886 6.6705e-06 deg
node 136.018175504925 9.3871e-05 deg
peri 306.3643038062738 0.0001085 deg
M 251.0615773388527 5.7144e-05 deg
tp 2459461.242563023542
(2021-Sep-03.74256302)
0.00024737 TDB
period 1522.578706728707
4.17
3.3817e-05
9.259e-08
d
yr
n .2364409789845726 5.2515e-09 deg/d
Q 2.811203630549029 4.1625e-08 au
  Orbit Determination Parameters
   # obs. used (total)      84  
   data-arc span      5765 days (15.78 yr)  
   first obs. used      2003-08-26  
   last obs. used      2019-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64139  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:09:10  

Additional Information
 Earth MOID = 1.38903 au 
 Jupiter MOID = 2.34997 au 
 T_jup = 3.410 
[ 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 MPO476853  
diameter diameter 1.899 km 0.458 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.026   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

392742 (2012 SS31)          Discovered 2008-Oct-07 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2012 SS31 = 2010 FR22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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