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JPL Small-Body Database Browser
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523900 (1997 ET5)
Classification: Main-belt Asteroid          SPK-ID: 2523900
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .202616208997619 5.0326e-08  
a 2.355741722480388 1.6012e-08 au
q 1.878430265293891 1.2202e-07 au
i 1.207967584764656 4.7013e-06 deg
node 150.5278614520974 0.00029294 deg
peri 132.2018504397365 0.00029375 deg
M 72.61828586839519 1.7014e-05 deg
tp 2458734.100484840343
(2019-Sep-07.60048484)
6.3244e-05 TDB
period 1320.656695632849
3.62
1.3465e-05
3.687e-08
d
yr
n .2725916592786369 2.7792e-09 deg/d
Q 2.833053179666885 1.9256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      8204 days (22.46 yr)  
   first obs. used      1997-03-04  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51129  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:40:51  

Additional Information
 Earth MOID = .862232 au 
 Jupiter MOID = 2.31671 au 
 T_jup = 3.526 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457592.5 (2016-Jul-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022760955175646 5.0288e-08  
q 1.879772309315113 1.2201e-07 au
tp 2457413.665557524144
(2016-Jan-26.16555752)
6.9243e-05 TDB
node 150.5373444961182 0.00029298 deg
peri 132.3668384018612 0.0002938 deg
i 1.20778803113294 4.7005e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      8204 days (22.46 yr)  
   first obs. used      1997-03-04  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51129  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:40:51  

Additional Information
 Jupiter MOID = 2.31671 au 
 T_jup = 3.526 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.52884515692568E-15 -6.10332298795499E-15 -4.131209280440955E-14 -3.001238407194563E-14 1.337936001044112E-13 -2.438970091825963E-15
q -6.10332298795499E-15 1.488747759965453E-14 -3.482318704861751E-13 7.537421904712525E-14 -4.596086819395938E-13 5.833470024893236E-15
tp -4.131209280440955E-14 -3.482318704861751E-13 4.79462587858779E-9 2.083216082005461E-11 1.542839728397458E-9 2.934476749674926E-12
node -3.001238407194563E-14 7.537421904712525E-14 2.083216082005461E-11 8.583897566287796E-8 -8.581393284056238E-8 1.181261992379966E-10
peri 1.337936001044112E-13 -4.596086819395938E-13 1.542839728397458E-9 -8.581393284056238E-8 8.632027741488588E-8 -1.172618038263016E-10
i -2.438970091825963E-15 5.833470024893236E-15 2.934476749674926E-12 1.181261992379966E-10 -1.172618038263016E-10 2.209483008317067E-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 17.9   .34926 MPO477466 autocmod 2.6n

523900 (1997 ET5)          Discovered 1997-Mar-04 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29

Alternate Designations
 1997 ET5 = 2015 DH98 = 2016 TW62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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