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173742 (2001 QJ328)
Classification: Main-belt Asteroid          SPK-ID: 2173742
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2918642670593962 4.2773e-08  
a 3.05136587994738 2.1087e-08 au
q 2.160781213866489 1.3003e-07 au
i 13.63812482190166 4.4312e-06 deg
node 120.468569395463 2.3478e-05 deg
peri 234.835949072305 2.4664e-05 deg
M 195.5910192834081 9.4743e-06 deg
tp 2459889.625142876695
(2022-Nov-06.12514288)
5.6485e-05 TDB
period 1946.883011137772
5.33
2.0182e-05
5.526e-08
d
yr
n .1849109566114163 1.9168e-09 deg/d
Q 3.941950546028272 2.7242e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      6813 days (18.65 yr)  
   first obs. used      2001-08-26  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:29:21  

Additional Information
 Earth MOID = 1.18658 au 
 Jupiter MOID = 1.64348 au 
 T_jup = 3.129 
[ 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 14.9   n/a MPO436862  
diameter diameter 6.212 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173742 (2001 QJ328)          Discovered 2001-Aug-26 by NEAT at Palomar
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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