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173808 (2001 SH239)
Classification: Main-belt Asteroid          SPK-ID: 2173808
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 .09893567829366814 6.102e-08  
a 2.777852768329114 2.8387e-08 au
q 2.50302402049453 1.7435e-07 au
i 4.913229296452132 7.1626e-06 deg
node 20.5741481527172 7.8138e-05 deg
peri 268.4502507202233 8.9622e-05 deg
M 81.64463895215839 4.0833e-05 deg
tp 2458616.980514326524
(2019-May-13.48051433)
0.00019435 TDB
period 1691.072636420808
4.63
2.5922e-05
7.097e-08
d
yr
n .2128826356991666 3.2632e-09 deg/d
Q 3.052681516163699 3.1196e-08 au
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      6556 days (17.95 yr)  
   first obs. used      2001-09-11  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60137  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:46:16  

Additional Information
 Earth MOID = 1.49296 au 
 Jupiter MOID = 2.1007 au 
 T_jup = 3.322 
[ 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 16.2   n/a MPO439994  
diameter diameter 3.180 km 0.247 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173808 (2001 SH239)          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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