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447721 (2007 ET165)
Classification: Main-belt Asteroid          SPK-ID: 2447721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538835340358666 8.7989e-08  
a 3.079716651361532 4.7035e-08 au
q 2.605798969220914 2.8281e-07 au
i 11.22433398548033 9.3434e-06 deg
node 44.40389902647644 4.3217e-05 deg
peri 157.5392179269423 5.0581e-05 deg
M 159.2720264603741 3.1767e-05 deg
tp 2458127.123356313568
(2018-Jan-08.62335631)
0.00016365 TDB
period 1974.07918210509
5.40
4.5223e-05
1.238e-07
d
yr
n .1823635056097944 4.1777e-09 deg/d
Q 3.553634333502149 5.4273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      96  
   data-arc span      8069 days (22.09 yr)  
   first obs. used      1996-04-15  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61671  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 17:31:44  

Additional Information
 Earth MOID = 1.60573 au 
 Jupiter MOID = 1.41871 au 
 T_jup = 3.181 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456997.5 (2014-Dec-06.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1527260231095358 8.8444e-08  
q 2.611647066234021 2.8446e-07 au
tp 2456153.818271168299
(2012-Aug-14.31827117)
0.000149 TDB
node 44.43029539867806 4.3201e-05 deg
peri 158.1621538723917 5.0635e-05 deg
i 11.22416610335459 9.3446e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      96  
   data-arc span      8069 days (22.09 yr)  
   first obs. used      1996-04-15  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61671  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 17:31:44  

Additional Information
 Jupiter MOID = 1.41871 au 
 T_jup = 3.181 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.822326421046726E-15 -2.492197018422268E-14 -2.008540074451105E-12 4.546895552272684E-14 -3.909066378398907E-13 3.907592008147223E-15
q -2.492197018422268E-14 8.092017627523797E-14 7.498417979969225E-12 -1.42533603231323E-13 1.553027515031856E-12 -3.666556413148612E-15
tp -2.008540074451105E-12 7.498417979969225E-12 2.220075392441891E-8 -8.196020547465799E-11 4.013979063622386E-9 1.565989725947936E-11
node 4.546895552272684E-14 -1.42533603231323E-13 -8.196020547465799E-11 1.866354642982768E-9 -1.843523778068465E-9 -1.073309622453031E-10
peri -3.909066378398907E-13 1.553027515031856E-12 4.013979063622386E-9 -1.843523778068465E-9 2.563899121351929E-9 1.088282512236675E-10
i 3.907592008147223E-15 -3.666556413148612E-15 1.565989725947936E-11 -1.073309622453031E-10 1.088282512236675E-10 8.732095168471248E-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 16.2   n/a MPO495223  

447721 (2007 ET165)          Discovered 2007-Mar-15 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-10-28

[ show close-approach data ]
Alternate Designations
 2007 ET165 = 2014 SS42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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