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9259 Janvanparadijs (2189 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2009259
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: MPO253428 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.1200796 n/a  
a 2.6177893 n/a AU
q 2.3034462 n/a AU
i 1.14804 n/a deg
node 274.82413 n/a deg
peri 358.99544 n/a deg
M 202.25523 n/a deg
tp 2457078.3801720
(2015-Feb-24.88017200)
n/a JED
period 1547.0361516
4.24
n/a
n/a
d
yr
n 0.23270303 n/a deg/d
Q 2.9321324 n/a AU
  Orbit Determination Parameters
   # obs. used (total)      932  
   first obs. used      1973-??-??  
   last obs. used      2013-01-31  
   # oppositions      15  
   planetary ephem.      DE403  
   condition code      0  
   fit RMS      0.51  
   data source      MPC:mpn  
   producer      MPCLINUX  

Additional Information
 T_jup = 3.396 

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a PDS3 (MPC 32437)  

9259 Janvanparadijs           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Jan van Paradijs (1946-1999), professor at the universities of Amsterdam and Alabama, was a pioneer researcher on issues of high-energy astrophysics. His recognition of the first optical counterpart to a \gamma -ray burst led to improved understanding of the physics of these events, their source environment and typical distances.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 2189 T-2 = 1993 HJ6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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