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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07700901947634442 6.3592e-08  
a 2.946024890656577 2.6405e-08 AU
q 2.719154402474209 1.9124e-07 AU
i 2.392929618424513 6.4884e-06 deg
node 41.69541991845316 0.0001722 deg
peri 320.6411710774827 0.00017788 deg
M 17.56546673986717 4.5542e-05 deg
tp 2456710.382271175469
(2014-Feb-21.88227118)
0.00023358 JED
period 1846.941095120394
5.06
2.4831e-05
6.798e-08
d
yr
n .1949168822715123 2.6205e-09 deg/d
Q 3.172895378838945 2.8438e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      943  
   data-arc span      15507 days (42.46 yr)  
   first obs. used      1971-03-24  
   last obs. used      2013-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52975  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:33:39  

Additional Information
 Earth MOID = 1.71551 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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