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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733144050130724 4.7626e-08  
a 2.740953057722628 2.0431e-08 au
q 2.265906409354669 1.2967e-07 au
i 3.784136754374188 6.374e-06 deg
node 37.93588101336366 9.7507e-05 deg
peri 43.2430350140939 0.00010044 deg
M 38.81972335166639 2.2716e-05 deg
tp 2458421.768640489573
(2018-Oct-30.26864049)
0.00010391 TDB
period 1657.489643624457
4.54
1.8532e-05
5.074e-08
d
yr
n .2171959272172481 2.4285e-09 deg/d
Q 3.215999706090587 2.3972e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      6602 days (18.08 yr)  
   first obs. used      2000-12-18  
   last obs. used      2019-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56742  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:21:07  

Additional Information
 Earth MOID = 1.28332 au 
 Jupiter MOID = 2.03762 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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