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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1899290389433067 4.3388e-08  
a 2.326042657375141 9.6955e-09 au
q 1.884259610918745 1.0203e-07 au
i 7.079822721160399 3.4975e-06 deg
node 144.8193897175356 4.071e-05 deg
peri 108.9906559340103 4.1683e-05 deg
M 290.766709182687 9.5604e-06 deg
tp 2458849.693903830471
(2020-Jan-01.19390383)
3.4803e-05 TDB
period 1295.761104519621
3.55
8.1016e-06
2.218e-08
d
yr
n .2778289908103572 1.7371e-09 deg/d
Q 2.767825703831537 1.1537e-08 au
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      9248 days (25.32 yr)  
   first obs. used      1994-01-11  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5268  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:35:10  

Additional Information
 Earth MOID = .883712 au 
 Jupiter MOID = 2.31255 au 
 T_jup = 3.540 
[ 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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