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266520 (2008 ET152)
Classification: Main-belt Asteroid          SPK-ID: 2266520
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1427335122926295 1.1145e-07  
a 2.259319204558032 2.0531e-08 au
q 1.936838639101274 2.5157e-07 au
i 3.135017480615645 8.3304e-06 deg
node 79.35073207407734 0.00017396 deg
peri 343.7267917470753 0.00017686 deg
M 19.58751901286768 3.2256e-05 deg
tp 2459133.009639490865
(2020-Oct-10.50963949)
0.00011084 TDB
period 1240.408740245628
3.40
1.6908e-05
4.629e-08
d
yr
n .2902269133710814 3.9561e-09 deg/d
Q 2.581799770014789 2.3462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      9862 days (27.00 yr)  
   first obs. used      1994-01-08  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:16:12  

Additional Information
 Earth MOID = .949645 au 
 Jupiter MOID = 2.70478 au 
 T_jup = 3.606 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456596.5 (2013-Oct-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428102077193587 1.1217e-07  
q 1.936509346372842 2.5323e-07 au
tp 2456650.913576507690
(2013-Dec-24.41357651)
0.00010414 TDB
node 79.38012868920535 0.00017386 deg
peri 343.4221608395718 0.00017674 deg
i 3.136461407514822 8.3365e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      9862 days (27.00 yr)  
   first obs. used      1994-01-08  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:16:12  

Additional Information
 Jupiter MOID = 2.70478 au 
 T_jup = 3.606 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.258113661638833E-14 -2.833479821755462E-14 -3.839148202348536E-12 9.627347753832439E-14 -1.916951479767396E-12 2.110501176644567E-15
q -2.833479821755462E-14 6.412562786612093E-14 8.714321715478107E-12 -2.209283862493082E-13 4.329039825573391E-12 -4.365110040755078E-15
tp -3.839148202348536E-12 8.714321715478107E-12 1.084539092881724E-8 6.530123980028333E-11 3.323084580667008E-9 -8.7043607258045E-12
node 9.627347753832439E-14 -2.209283862493082E-13 6.530123980028333E-11 3.022595663217436E-8 -3.016551018182142E-8 -4.096763778592471E-10
peri -1.916951479767396E-12 4.329039825573391E-12 3.323084580667008E-9 -3.016551018182142E-8 3.123628241699921E-8 4.064819069812855E-10
i 2.110501176644567E-15 -4.365110040755078E-15 -8.7043607258045E-12 -4.096763778592471E-10 4.064819069812855E-10 6.949751065590704E-11

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 17.9   n/a MPO437227  

266520 (2008 ET152)          Discovered 2008-Mar-11 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2008 ET152 = 2005 JW184 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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