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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1182492972248631 4.7884e-08  
a 2.757644374290706 1.9133e-08 au
q 2.431554865034732 1.253e-07 au
i 3.243089205184667 4.1369e-06 deg
node 315.5776558944276 0.00011629 deg
peri 6.534320825700264 0.00011942 deg
M 78.84417833784812 2.8408e-05 deg
tp 2458834.169611970154
(2019-Dec-16.66961197)
0.00013052 TDB
period 1672.652851116564
4.58
1.7408e-05
4.766e-08
d
yr
n .2152269670061455 2.2399e-09 deg/d
Q 3.083733883546679 2.1395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      369  
   data-arc span      7108 days (19.46 yr)  
   first obs. used      2001-07-27  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61291  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:29:54  

Additional Information
 Earth MOID = 1.41701 au 
 Jupiter MOID = 2.20193 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457539.5 (2016-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1199245617366281 4.7913e-08  
q 2.426658688594219 1.2567e-07 au
tp 2457163.923765843597
(2015-May-21.42376584)
0.00012366 TDB
node 315.7158840428954 0.00011641 deg
peri 6.939309218317722 0.00011947 deg
i 3.241600817220621 4.1387e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      369  
   data-arc span      7108 days (19.46 yr)  
   first obs. used      2001-07-27  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61291  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:29:54  

Additional Information
 Jupiter MOID = 2.20193 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.295614276461083E-15 -5.978264868042363E-15 2.217914313705241E-12 2.143281956394236E-14 3.886068747261946E-13 -1.035634733347997E-15
q -5.978264868042363E-15 1.579414760291588E-14 -5.640751997154368E-12 -5.425053090802355E-14 -9.739127466861872E-13 2.892669974215495E-15
tp 2.217914313705241E-12 -5.640751997154368E-12 1.52920886744043E-8 1.506384711806734E-11 3.383131606379107E-9 -5.647084897200773E-12
node 2.143281956394236E-14 -5.425053090802355E-14 1.506384711806734E-11 1.355145539504E-8 -1.352661600838998E-8 1.327945258524242E-10
peri 3.886068747261946E-13 -9.739127466861872E-13 3.383131606379107E-9 -1.352661600838998E-8 1.427265572718177E-8 -1.33836625539725E-10
i -1.035634733347997E-15 2.892669974215495E-15 -5.647084897200773E-12 1.327945258524242E-10 -1.33836625539725E-10 1.712868688907413E-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 16.37   n/a E2021B55  
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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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