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20156 Herbwindolf (1996 TU11)
Classification: Main-belt Asteroid          SPK-ID: 2020156
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09706464258378425 6.5729e-08  
a 2.272807679968128 1.3386e-08 AU
q 2.052198414850342 1.5183e-07 AU
i 7.973525560640931 6.5617e-06 deg
node 70.82764405110507 4.94e-05 deg
peri 342.4416133330505 6.0193e-05 deg
M 87.97566227813768 3.5526e-05 deg
tp 2456694.654212426908
(2014-Feb-06.15421243)
0.00012265 JED
period 1251.533443172211
3.43
1.1056e-05
3.027e-08
d
yr
n .2876471275809639 2.5412e-09 deg/d
Q 2.493416945085914 1.4685e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      6702 days (18.35 yr)  
   first obs. used      1996-10-13  
   last obs. used      2015-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57227  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:00:04  

Additional Information
 Earth MOID = 1.06494 AU 
 T_jup = 3.592 
[ 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 15.1 mag n/a MPO233633  

20156 Herbwindolf           Discovered 1996 Oct. 13 by P. G. Comba at Prescott.
Herbert Windolf of Prescott, Arizona, is a very dear and generous friend who was particularly helpful and supportive during the long terminal illness of the discoverer's wife. Windolf is widely interested in scientific matters and a great enthusiast for space exploration.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020526/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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