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233755 (2008 TT20)
Classification: Main-belt Asteroid          SPK-ID: 2233755
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149608973506235 5.1757e-08  
a 3.137221474455334 3.6926e-08 au
q 2.776563678564302 1.6827e-07 au
i .05043269526294698 5.0206e-06 deg
node 92.28260650844575 0.010768 deg
peri 31.55217433789088 0.010768 deg
M 321.7550345449695 4.3059e-05 deg
tp 2459216.119466805055
(2021-Jan-01.61946680)
0.00024416 TDB
period 2029.626831303879
5.56
3.5834e-05
9.811e-08
d
yr
n .1773725073237861 3.1316e-09 deg/d
Q 3.497879270346365 4.1171e-08 au
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      5375 days (14.72 yr)  
   first obs. used      2005-03-08  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56605  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 17:54:28  

Additional Information
 Earth MOID = 1.79215 au 
 Jupiter MOID = 1.56393 au 
 T_jup = 3.201 
[ 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 16.1   n/a MPO454691  
diameter diameter 3.382 km 0.488 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233755 (2008 TT20)          Discovered 2008-Oct-01 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
Alternate Designations
 2008 TT20 = 2005 EY155 = 2005 GN226 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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