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173725 (2001 QE204)
Classification: Main-belt Asteroid          SPK-ID: 2173725
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09774127795057183 4.6173e-08  
a 2.81534549848921 2.5968e-08 au
q 2.540170031594485 1.3979e-07 au
i 6.226432960584287 5.1639e-06 deg
node 260.60552265531 4.7308e-05 deg
peri 357.4271492208256 5.5793e-05 deg
M 54.38845415339238 2.8221e-05 deg
tp 2458739.824515214866
(2019-Sep-13.32451522)
0.00013514 TDB
period 1725.424559006244
4.72
2.3873e-05
6.536e-08
d
yr
n .2086443003960379 2.8868e-09 deg/d
Q 3.090520965383934 2.8506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      338  
   data-arc span      6857 days (18.77 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58076  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 03:27:06  

Additional Information
 Earth MOID = 1.52501 au 
 Jupiter MOID = 1.96488 au 
 T_jup = 3.304 
[ 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 15.8   n/a MPO436862  
diameter diameter 2.404 km 0.659 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173725 (2001 QE204)          Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2001 QE204 = 2005 KP10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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