Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07653174382986561 5.0806e-08  
a 2.948888919000897 2.2334e-08 au
q 2.723205307669191 1.4492e-07 au
i 2.392681225175813 6.0771e-06 deg
node 41.66911513948328 0.00013188 deg
peri 321.4557855338718 0.0001385 deg
M 133.702510916488 4.196e-05 deg
tp 2456713.553192215696
(2014-Feb-25.05319222)
0.00021662 JED
period 1849.635052529539
5.06
2.1013e-05
5.753e-08
d
yr
n .1946329896309373 2.2112e-09 deg/d
Q 3.174572530332603 2.4043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1139  
   data-arc span      16338 days (44.73 yr)  
   first obs. used      1971-03-24  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52393  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:10:53  

Additional Information
 Earth MOID = 1.71926 au 
 Jupiter MOID = 2.20997 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 13.6 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-10 20:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin