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266655 (2008 TT121)
Classification: Outer Main-belt Asteroid          SPK-ID: 2266655
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0650387056886447 5.9635e-08  
a 3.446975993492646 8.3384e-08 au
q 3.222789136336054 2.1868e-07 au
i 6.72600832382177 8.1798e-06 deg
node 314.2096986379844 5.5673e-05 deg
peri 289.4922308919881 8.4735e-05 deg
M 68.76397517669028 6.7292e-05 deg
tp 2458554.007375659174
(2019-Mar-11.50737566)
0.00043031 TDB
period 2337.522581405158
6.40
8.4818e-05
2.322e-07
d
yr
n .1540092073821134 5.5883e-09 deg/d
Q 3.671162850649238 8.8807e-08 au
  Orbit Determination Parameters
   # obs. used (total)      173  
   data-arc span      7402 days (20.27 yr)  
   first obs. used      1998-01-08  
   last obs. used      2018-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63906  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 10:15:04  

Additional Information
 Earth MOID = 2.21816 au 
 Jupiter MOID = 1.45236 au 
 T_jup = 3.123 
[ 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 15.1   n/a MPO433731  
diameter diameter 5.698 km 2.913 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266655 (2008 TT121)          Discovered 2008-Oct-07 by CSS at Catalina
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2008 TT121 = 2001 SR326 = 2010 EX163 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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