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JPL Small-Body Database Browser
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56391 (2000 ET97)
Classification: Main-belt Asteroid          SPK-ID: 2056391
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128608904672124 3.3661e-08  
a 2.243916779501275 8.5457e-09 au
q 1.990666333632441 7.627e-08 au
i 3.776095978619073 5.0341e-06 deg
node 354.0433009133822 5.8951e-05 deg
peri 260.0878661241373 6.3623e-05 deg
M 316.4568614010001 2.3132e-05 deg
tp 2459148.999768006845
(2020-Oct-26.49976801)
7.8919e-05 TDB
period 1227.746051445452
3.36
7.0136e-06
1.92e-08
d
yr
n .293220246626869 1.675e-09 deg/d
Q 2.497167225370108 9.5102e-09 au
  Orbit Determination Parameters
   # obs. used (total)      888  
   data-arc span      10315 days (28.24 yr)  
   first obs. used      1991-11-08  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54146  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:47:57  

Additional Information
 Earth MOID = .980363 au 
 Jupiter MOID = 2.54262 au 
 T_jup = 3.621 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456609.5 (2013-Nov-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1130979842560111 3.3618e-08  
q 1.990231388093728 7.6219e-08 au
tp 2456693.215052377002
(2014-Feb-04.71505238)
7.9512e-05 TDB
node 354.0756096463064 5.8928e-05 deg
peri 260.1290743645025 6.3594e-05 deg
i 3.777471774503215 5.0347e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      888  
   data-arc span      10315 days (28.24 yr)  
   first obs. used      1991-11-08  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54146  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 11:47:57  

Additional Information
 Jupiter MOID = 2.54262 au 
 T_jup = 3.621 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.1301439435926E-15 -2.549640475329772E-15 3.935296000209351E-13 -9.82425187801216E-15 9.459150875093277E-14 -3.87890047891346E-16
q -2.549640475329772E-15 5.809367439759747E-15 -9.694004525142312E-13 2.193489695071711E-14 -2.405580270681436E-13 1.072966296693331E-15
tp 3.935296000209351E-13 -9.694004525142312E-13 6.322197499804666E-9 -2.451912262270166E-11 1.912171173887056E-9 -1.660234745500243E-12
node -9.82425187801216E-15 2.193489695071711E-14 -2.451912262270166E-11 3.472501540864966E-9 -3.471412782959813E-9 -8.247639580874761E-11
peri 9.459150875093277E-14 -2.405580270681436E-13 1.912171173887056E-9 -3.471412782959813E-9 4.04419834077028E-9 8.180896185554667E-11
i -3.87890047891346E-16 1.072966296693331E-15 -1.660234745500243E-12 -8.247639580874761E-11 8.180896185554667E-11 2.534831401689751E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO459238  

56391 (2000 ET97)          Discovered 2000-Mar-11 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 ET97 = 2001 SA165 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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