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9504 Lionel (2224 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2009504
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07691520136409967 6.278e-08  
a 2.945909211259818 2.5935e-08 AU
q 2.719324011075413 1.8811e-07 AU
i 2.392921319288355 6.4884e-06 deg
node 41.69494727531724 0.00017002 deg
peri 320.687003825968 0.00017571 deg
M 56.51639139075625 4.5154e-05 deg
tp 2456710.565839431839
(2014-Feb-22.06583943)
0.00023152 JED
period 1846.832312468019
5.06
2.4388e-05
6.677e-08
d
yr
n .1949283633222299 2.5741e-09 deg/d
Q 3.172494411444223 2.793e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      947  
   data-arc span      15835 days (43.35 yr)  
   first obs. used      1971-03-24  
   last obs. used      2014-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52966  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:14:51  

Additional Information
 Earth MOID = 1.7172 AU 
 T_jup = 3.265 
[ 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 13.6 mag n/a MPO270236  

9504 Lionel           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Lionel was one of the knights of the Round Table.
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
 2224 T-2 = 1978 RC2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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