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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07691520672300192 6.213e-08  
a 2.945909209360779 2.5744e-08 AU
q 2.719323993535599 1.8579e-07 AU
i 2.392921547070234 6.487e-06 deg
node 41.69490345781081 0.0001681 deg
peri 320.6870454057806 0.00017384 deg
M 56.51639436378527 4.491e-05 deg
tp 2456710.565824460286
(2014-Feb-22.06582446)
0.00023032 JED
period 1846.832310682217
5.06
2.4208e-05
6.628e-08
d
yr
n .1949283635107167 2.5551e-09 deg/d
Q 3.172494425185958 2.7724e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      15869 days (43.45 yr)  
   first obs. used      1971-03-24  
   last obs. used      2014-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53012  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:55:09  

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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