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173820 (2001 SJ328)
Classification: Main-belt Asteroid          SPK-ID: 2173820
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1182671439819264 5.5703e-08  
a 2.757251608121381 2.6694e-08 au
q 2.431159335189292 1.5685e-07 au
i 3.243081246834173 5.8944e-06 deg
node 315.5777888827294 0.0001229 deg
peri 6.451548982845635 0.00012593 deg
M 35.86683480882734 2.8352e-05 deg
tp 2458833.889036186161
(2019-Dec-16.38903619)
0.00013106 TDB
period 1672.295514579956
4.58
2.4285e-05
6.649e-08
d
yr
n .2152729567599325 3.1262e-09 deg/d
Q 3.08334388105347 2.9851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      6112 days (16.73 yr)  
   first obs. used      2001-07-27  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62716  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:09:43  

Additional Information
 Earth MOID = 1.41857 au 
 Jupiter MOID = 2.20244 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456671.5 (2014-Jan-14.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1199083012355599 5.5934e-08  
q 2.426333359543368 1.5793e-07 au
tp 2457164.989932526224
(2015-May-22.48993253)
0.00012525 TDB
node 315.7274152329157 0.000123 deg
peri 7.230282831454262 0.00012595 deg
i 3.241866748591568 5.8971e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      6112 days (16.73 yr)  
   first obs. used      2001-07-27  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62716  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:09:43  

Additional Information
 Jupiter MOID = 2.20244 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.128627592671185E-15 -8.736076340330057E-15 2.739503251993717E-12 4.297881847100916E-14 5.538125290754241E-13 -7.489448497419573E-16
q -8.736076340330057E-15 2.494320752547039E-14 -7.386670082845526E-12 -1.152787156022107E-13 -1.535268211115724E-12 3.109619044528731E-15
tp 2.739503251993717E-12 -7.386670082845526E-12 1.568878785311116E-8 7.430019977463644E-11 3.455579423877212E-9 3.093416307068006E-14
node 4.297881847100916E-14 -1.152787156022107E-13 7.430019977463644E-11 1.5129302970517E-8 -1.508785509830808E-8 2.752858560417147E-10
peri 5.538125290754241E-13 -1.535268211115724E-12 3.455579423877212E-9 -1.508785509830808E-8 1.586231126828073E-8 -2.749221123176981E-10
i -7.489448497419573E-16 3.109619044528731E-15 3.093416307068006E-14 2.752858560417147E-10 -2.749221123176981E-10 3.477521134817054E-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 16.2   n/a MPO446073  
diameter diameter 3.098 km 0.932 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173820 (2001 SJ328)          Discovered 2001-Sep-19 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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