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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04632354845468076 5.6135e-08  
a 2.696243543888279 3.1403e-08 au
q 2.57134397543735 1.5174e-07 au
i 6.489665247102281 8.6735e-06 deg
node 148.8736104626153 5.6363e-05 deg
peri 312.9410502750195 0.00011576 deg
M 122.9350327534764 0.00010069 deg
tp 2458648.282373886715
(2019-Jun-13.78237389)
0.00045384 TDB
period 1617.10084544766
4.43
2.8251e-05
7.735e-08
d
yr
n .2226206244424674 3.8892e-09 deg/d
Q 2.821143112339208 3.2857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      154  
   data-arc span      6633 days (18.16 yr)  
   first obs. used      2002-02-19  
   last obs. used      2020-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62822  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 07:49:06  

Additional Information
 Earth MOID = 1.59299 au 
 Jupiter MOID = 2.23187 au 
 T_jup = 3.359 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457624.5 (2016-Aug-24.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04684662093466226 5.6603e-08  
q 2.570270645226195 1.535e-07 au
tp 2457035.892224382619
(2015-Jan-13.39222438)
0.00045271 TDB
node 148.8878349841363 5.6366e-05 deg
peri 314.134801198575 0.00011439 deg
i 6.489338313874271 8.6733e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      154  
   data-arc span      6633 days (18.16 yr)  
   first obs. used      2002-02-19  
   last obs. used      2020-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62822  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 07:49:06  

Additional Information
 Jupiter MOID = 2.23187 au 
 T_jup = 3.359 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.203909978042905E-15 -8.521619830582755E-15 7.001374218964706E-12 1.758928420643681E-14 1.488538776899847E-12 1.09543632230055E-15
q -8.521619830582755E-15 2.35616368866938E-14 -2.221734095398545E-11 -5.135069363613823E-14 -4.690998024111568E-12 -1.355248568611262E-15
tp 7.001374218964706E-12 -2.221734095398545E-11 2.049452558869445E-7 1.953484870745706E-10 4.50869139032269E-8 -6.139138621809158E-12
node 1.758928420643681E-14 -5.135069363613823E-14 1.953484870745706E-10 3.177131812468113E-9 -3.113072918013717E-9 1.424833008573692E-10
peri 1.488538776899847E-12 -4.690998024111568E-12 4.50869139032269E-8 -3.113072918013717E-9 1.30843353555003E-8 -1.428803392142202E-10
i 1.09543632230055E-15 -1.355248568611262E-15 -6.139138621809158E-12 1.424833008573692E-10 -1.428803392142202E-10 7.522597576388043E-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 17.05   n/a MPCxxxxx  

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

[ hide close-approach data ]
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 13 CATAB v2.0f-lin.ifort 2021-Apr-14 07:49:07 2021-Apr-14 07:49
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 13 CATAB v2.0f-lin.ifort 2021-Apr-14 07:49:07 2021-Apr-14 07:49

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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