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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1181957400237663 4.7919e-08  
a 2.758231481500894 1.9144e-08 au
q 2.432220270388046 1.2541e-07 au
i 3.243040430549301 4.1371e-06 deg
node 315.5788727128034 0.00011628 deg
peri 6.635017787622401 0.0001194 deg
M 120.91835102363 2.8578e-05 deg
tp 2458834.502726389433
(2019-Dec-17.00272639)
0.00013053 TDB
period 1673.187045531796
4.58
1.742e-05
4.769e-08
d
yr
n .2151582520085671 2.24e-09 deg/d
Q 3.084242692613741 2.1407e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6128  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:58:42  

Additional Information
 Earth MOID = 1.41898 au 
 Jupiter MOID = 2.20095 au 
 T_jup = 3.330 
[ 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 16.37   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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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