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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07616117718506074 5.0179e-08  
a 2.950871951450709 2.1564e-08 au
q 2.726130069905845 1.4224e-07 au
i 2.393226162001968 5.2732e-06 deg
node 41.6443845984406 0.00012848 deg
peri 322.1534060416122 0.00013344 deg
M 171.8569318908272 3.7111e-05 deg
tp 2456716.629728561740
(2014-Feb-28.12972856)
0.00019071 JED
period 1851.501095806289
5.07
2.0295e-05
5.556e-08
d
yr
n .1944368279421556 2.1313e-09 deg/d
Q 3.175613832995572 2.3207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1246  
   data-arc span      16441 days (45.01 yr)  
   first obs. used      1971-03-24  
   last obs. used      2016-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53198  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:05:36  

Additional Information
 Earth MOID = 1.72313 au 
 Jupiter MOID = 2.21088 au 
 T_jup = 3.264 
[ 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 13.7 mag n/a MPO365363  

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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