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47204 (1999 TO221)
Classification: Main-belt Asteroid          SPK-ID: 2047204
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1902206082692315 3.3498e-08  
a 2.326592343835377 8.0925e-09 au
q 1.884026532996474 7.6029e-08 au
i 7.080975870982545 3.3968e-06 deg
node 144.8059451508812 2.8563e-05 deg
peri 108.9313337964621 3.0078e-05 deg
M 41.9333632442028 9.3789e-06 deg
tp 2458849.514213988095
(2020-Jan-01.01421399)		 3.3609e-05 TDB
period 1296.220449758473
3.55		 6.7629e-06
1.852e-08		 d
yr
n .2777305357796812 1.449e-09 deg/d
Q 2.769158154674279 9.6319e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1260  
   data-arc span      9800 days (26.83 yr)  
   first obs. used      1994-01-11  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49988  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:48:35  

Additional Information
 Earth MOID = .883801 au 
 Jupiter MOID = 2.31124 au 
 T_jup = 3.539 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO468336  

47204 (1999 TO221)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TO221 = 2002 NC18 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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