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9498 Westerbork (1197 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2009498
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2071659282627025 4.8085e-08  
a 2.357241400422143 1.5937e-08 AU
q 1.868901297564417 1.1157e-07 AU
i 1.757812244431683 7.2142e-06 deg
node 214.0450731744629 0.00017968 deg
peri 62.99415414843074 0.00018078 deg
M 203.6541880856478 2.1538e-05 deg
tp 2457574.600953685859
(2016-Jul-05.10095369)
8.2562e-05 JED
period 1321.918002128055
3.62
1.3406e-05
3.67e-08
d
yr
n .2723315662699678 2.7618e-09 deg/d
Q 2.845581503279869 1.9239e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      14741 days (40.36 yr)  
   first obs. used      1973-09-19  
   last obs. used      2014-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58437  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:33:33  

Additional Information
 Earth MOID = .854726 AU 
 T_jup = 3.524 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8 mag n/a MPO272684  

9498 Westerbork           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
The Westerbork Synthesis Radio Telescope in The Netherlands, dedicated in 1970, has excelled in studies of neutral hydrogen in nearby and distant galaxies, in continuum studies of radio galaxies, and in large-scale surveys. It is also an important part of the European VLBI network. The name was suggested by B. Burton.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1197 T-2 = 1994 GR7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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