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226920 (2004 TT221)
Classification: Main-belt Asteroid          SPK-ID: 2226920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2326538381560441 4.9712e-08  
a 2.788698593251703 1.7981e-08 au
q 2.139897162071334 1.3894e-07 au
i 9.093135665710008 5.0571e-06 deg
node 73.0434593358251 3.7249e-05 deg
peri 316.4175132596039 3.9538e-05 deg
M 37.95341507404511 1.1267e-05 deg
tp 2458421.171567397233
(2018-Oct-29.67156740)
5.3169e-05 TDB
period 1700.986211940257
4.66
1.6451e-05
4.504e-08
d
yr
n .2116419271790335 2.0469e-09 deg/d
Q 3.437500024432073 2.2164e-08 au
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      6649 days (18.20 yr)  
   first obs. used      2000-11-26  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5318  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:22:16  

Additional Information
 Earth MOID = 1.15584 au 
 Jupiter MOID = 2.02858 au 
 T_jup = 3.272 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO268234  
diameter diameter 5.637 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226920 (2004 TT221)          Discovered 2004-Oct-07 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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