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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2328412746070715 4.8828e-08  
a 2.787951521546172 1.697e-08 au
q 2.138801335726637 1.3549e-07 au
i 9.092799082298969 4.4748e-06 deg
node 73.03845958508049 3.663e-05 deg
peri 316.3492801782463 3.8478e-05 deg
M 122.6828175677885 1.0977e-05 deg
tp 2458421.061304763735
(2018-Oct-29.56130476)		 5.091e-05 TDB
period 1700.302735301904
4.66		 1.5524e-05
4.25e-08		 d
yr
n .2117270016248481 1.9331e-09 deg/d
Q 3.437101707365708 2.0921e-08 au
   Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      7093 days (19.42 yr)  
   first obs. used      2000-11-26  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5161  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 10:31:21  

Additional Information
 Earth MOID = 1.15539 au 
 Jupiter MOID = 2.03149 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 15.4   n/a MPO470427  
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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