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JPL Small-Body Database Browser
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172859 (2005 ET73)
Classification: Main-belt Asteroid          SPK-ID: 2172859
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1168486491747872 5.2106e-08  
a 2.606003464769217 1.8423e-08 au
q 2.301495480166119 1.317e-07 au
i 4.662944205384818 6.6162e-06 deg
node 17.45870771955908 5.8758e-05 deg
peri 235.3439405270887 6.4355e-05 deg
M 151.4979101421905 2.5589e-05 deg
tp 2458353.856299311428
(2018-Aug-23.35629931)
0.00010947 TDB
period 1536.600287287105
4.21
1.6294e-05
4.461e-08
d
yr
n .2342834392121495 2.4844e-09 deg/d
Q 2.910511449372315 2.0576e-08 au
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      7708 days (21.10 yr)  
   first obs. used      1998-09-19  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 19:43:59  

Additional Information
 Earth MOID = 1.29117 au 
 Jupiter MOID = 2.1323 au 
 T_jup = 3.398 
[ 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 16.3   n/a MPO449896  

172859 (2005 ET73)          Discovered 2005-Mar-03 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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