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312826 (2011 SD142)
Classification: Main-belt Asteroid          SPK-ID: 2312826
[ 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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0196790669549045 5.8801e-08  
a 2.731958357807506 3.3677e-08 au
q 2.678195966366201 1.5799e-07 au
i .8473476759625146 6.8073e-06 deg
node 227.0674847008576 0.00041559 deg
peri 293.1199629780393 0.00044713 deg
M 191.350508380839 0.00016449 deg
tp 2459773.166486064647
(2022-Jul-12.66648606)		 0.00075413 TDB
period 1649.337524309915
4.52		 3.0498e-05
8.35e-08		 d
yr
n .2182694534586694 4.036e-09 deg/d
Q 2.785720749248811 3.434e-08 au
   Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      5665 days (15.51 yr)  
   first obs. used      2002-10-10  
   last obs. used      2018-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64566  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:20:31  

Additional Information
 Earth MOID = 1.68504 au 
 Jupiter MOID = 2.17942 au 
 T_jup = 3.353 
[ 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 16.7   n/a MPO437380  

312826 (2011 SD142)          Discovered 2004-Jan-19 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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Alternate Designations
 2011 SD142 = 2004 BM145 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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