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332955 (2011 ET5)
Classification: Main-belt Asteroid          SPK-ID: 2332955
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04637313394728468 6.0686e-08  
a 2.696610201865421 3.1766e-08 au
q 2.571559935770702 1.6271e-07 au
i 6.489514879930894 9.4856e-06 deg
node 148.8724221698312 5.7049e-05 deg
peri 313.1285074015138 0.00012168 deg
M 78.21984826253656 0.00010801 deg
tp 2458649.068929789654
(2019-Jun-14.56892979)
0.00048596 TDB
period 1617.43071721502
4.43
2.858e-05
7.825e-08
d
yr
n .2225752214103288 3.9329e-09 deg/d
Q 2.82166046796014 3.3239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      6633 days (18.16 yr)  
   first obs. used      2002-02-19  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61752  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 21:31:54  

Additional Information
 Earth MOID = 1.59331 au 
 Jupiter MOID = 2.23188 au 
 T_jup = 3.359 
[ 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 16.9   n/a MPO418710  

332955 (2011 ET5)          Discovered 2007-Mar-26 by Spacewatch at Kitt Peak
Reference: 20120703/Numbers.arcLast Updated: 2012-07-09

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1922-Mar-26 20:49 00:06 Eunom 0.0365710291058731 0.0365199965485842 0.0366220844118525 6.35547731028752 6.35547724989147 2423140.367298709 5.56802878802745 2922.62273245988 70.802127833866 -29.4874978503097 38052.9586547579 T 12 CATAB v2.0f-lin.ifort 2020-May-21 21:31:55 2020-May-21 21:32
2059-Feb-26 19:44 00:02 David 0.0412568981524278 0.041242956503644 0.0412708613254964 4.15315442843223 4.15315434026476 2473151.322485971 2.08157158017296 1642.48862980037 46.2010553221123 -65.0073952750129 120989.531107014 T 12 CATAB v2.0f-lin.ifort 2020-May-21 21:31:55 2020-May-21 21:32

Alternate Designations
 2011 ET5 = 2007 HT77 = 2010 BO24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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