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226917 (2004 TH208)
Classification: Main-belt Asteroid          SPK-ID: 2226917
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731327505852443 4.7334e-08  
a 2.740336045985152 1.9755e-08 au
q 2.26589412881585 1.283e-07 au
i 3.784304703170639 6.3324e-06 deg
node 37.93207319466181 8.3799e-05 deg
peri 43.17074159710494 8.6493e-05 deg
M 125.8120818242314 2.1745e-05 deg
tp 2458421.439408121485
(2018-Oct-29.93940812)
9.7035e-05 TDB
period 1656.930002696417
4.54
1.7917e-05
4.905e-08
d
yr
n .2172692868221056 2.3495e-09 deg/d
Q 3.214777963154453 2.3175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      7070 days (19.36 yr)  
   first obs. used      2000-12-18  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 10:31:21  

Additional Information
 Earth MOID = 1.2834 au 
 Jupiter MOID = 2.03853 au 
 T_jup = 3.325 
[ 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 16.1   n/a MPO281215  
diameter diameter 2.354 km 0.648 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.127   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226917 (2004 TH208)          Discovered 2004-Oct-07 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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