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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2668444079406637 8.5754e-08  
a 2.590358642371068 1.5649e-08 AU
q 1.899135924093579 2.2635e-07 AU
i 3.066689999178572 7.9136e-06 deg
node 213.0003932003187 0.00016463 deg
peri 116.4008727351587 0.00016558 deg
M 291.7026505558222 1.9708e-05 deg
tp 2457089.394731527303
(2015-Mar-07.89473153)
8.5351e-05 JED
period 1522.783888338656
4.17
1.3799e-05
3.778e-08
d
yr
n .2364091206617354 2.1423e-09 deg/d
Q 3.281581360648557 1.9824e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      479  
   data-arc span      14808 days (40.54 yr)  
   first obs. used      1973-09-19  
   last obs. used      2014-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .6407  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:56:47  

Additional Information
 Earth MOID = .889471 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 14.8 mag n/a PDS3 (MPC 32654)  

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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