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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2650059945470046 3.244e-08  
a 2.592408132300068 8.2679e-09 au
q 1.905404436928146 8.1658e-08 au
i 3.067373463948373 4.1938e-06 deg
node 212.9478990680715 6.0193e-05 deg
peri 116.3340057741402 6.0788e-05 deg
M 138.8726360677585 9.929e-06 deg
tp 2458612.377671335800
(2019-May-08.87767134)
4.0502e-05 TDB
period 1524.591484068957
4.17
7.2935e-06
1.997e-08
d
yr
n .2361288277953658 1.1296e-09 deg/d
Q 3.279411827671991 1.0459e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1272  
   data-arc span      17348 days (47.50 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:18:37  

Additional Information
 Earth MOID = .894973 au 
 Jupiter MOID = 2.1051 au 
 T_jup = 3.366 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.96   n/a MPCxxxxx  
diameter diameter 5.756 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

Alternate Designations
 2071 T-2 = 1994 VH3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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