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9501 Ywain (2071 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2009501
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2667531627619866 4.2827e-08  
a 2.590119756137212 1.2943e-08 au
q 1.899197119255305 1.0995e-07 au
i 3.066886404001861 6.4906e-06 deg
node 212.9928410388068 9.9139e-05 deg
peri 116.3396526293335 0.00010051 deg
M 73.59694560872749 1.6524e-05 deg
tp 2457089.231277250219
(2015-Mar-07.73127725)
6.8298e-05 JED
period 1522.573243537335
4.17
1.1412e-05
3.124e-08
d
yr
n .236441827365642 1.7722e-09 deg/d
Q 3.281042393019119 1.6395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      15431 days (42.25 yr)  
   first obs. used      1973-09-19  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56989  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:10:53  

Additional Information
 Earth MOID = .888704 au 
 Jupiter MOID = 2.09187 au 
 T_jup = 3.367 
[ 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 15.0 mag n/a MPO358722  

9501 Ywain           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Ywain was a knight of the Round Table of King Arthur.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 2071 T-2 = 1994 VH3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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