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21441 Stevencondie (1998 FC144)
Classification: Main-belt Asteroid          SPK-ID: 2021441
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496121389171324 6.1869e-08  
a 2.482937478822115 2.306e-08 AU
q 2.111459891818026 1.5656e-07 AU
i 5.140465080410704 9.6714e-06 deg
node 238.4922133152534 5.7895e-05 deg
peri 52.44471397460447 6.7668e-05 deg
M 23.84531248361273 3.6915e-05 deg
tp 2456905.844115032907
(2014-Sep-05.34411503)
0.00014593 JED
period 1429.048942494319
3.91
1.9908e-05
5.451e-08
d
yr
n .2519157946904474 3.5094e-09 deg/d
Q 2.854415065826203 2.651e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      8313 days (22.76 yr)  
   first obs. used      1991-09-15  
   last obs. used      2014-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48269  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:46:37  

Additional Information
 Earth MOID = 1.10123 AU 
 T_jup = 3.456 
[ 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 14.3 mag n/a MPO257020  

21441 Stevencondie           Discovered 1998 Mar. 29 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Steven Condie mentored a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors. He teaches at the Illinois Mathematics and Science Academy, Aurora, Illinois.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

Alternate Designations
 1998 FC144 = 1991 RO21 = 1998 HO60 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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