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173872 Andrewwest (2001 TJ245)
Classification: Main-belt Asteroid          SPK-ID: 2173872
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1051982051389377 7.4863e-08  
a 3.042446912395316 4.5687e-08 au
q 2.722386957980826 2.1452e-07 au
i 2.452807405304811 9.999e-06 deg
node 342.0266708170734 0.00021848 deg
peri 127.6972638885425 0.00022754 deg
M 154.0379678682331 5.7856e-05 deg
tp 2456571.111097317115
(2013-Oct-05.61109732)
0.00031226 JED
period 1938.353310537369
5.31
4.3661e-05
1.195e-07
d
yr
n .1857246550682741 4.1834e-09 deg/d
Q 3.362506866809806 5.0494e-08 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      6829 days (18.70 yr)  
   first obs. used      1996-10-06  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54704  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 15:28:25  

Additional Information
 Earth MOID = 1.73981 au 
 Jupiter MOID = 1.74339 au 
 T_jup = 3.230 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9 mag n/a MPO248302  

173872 Andrewwest           Discovered 2001 Oct. 14 by the Sloan Digital Sky Survey at Apache Point.
Andrew A. West (b. 1977) is an American astronomer and a contributor to the Sloan Digital Sky Survey, known for his studies of magnetic activity and dynamics of low-mass stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20130127/MPCPages.arcLast Updated: 2013-01-31

[ show close-approach data ]
Alternate Designations
 2001 TJ245 = 1996 TU24 = 2004 GY31 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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