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100180 (1994 AR9)
Classification: Main-belt Asteroid          SPK-ID: 2100180
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0512336383757416 4.4462e-08  
a 2.988497677767587 2.0682e-08 au
q 2.835386068458099 1.3682e-07 au
i 2.185221142818487 4.2643e-06 deg
node 45.29975938520077 0.00015646 deg
peri 58.97222544965589 0.00016895 deg
M 54.2223006099923 6.0762e-05 deg
tp 2458716.280906104066
(2019-Aug-20.78090610)		 0.00031899 TDB
period 1887.025682264773
5.17		 1.9589e-05
5.363e-08		 d
yr
n .1907764178216879 1.9804e-09 deg/d
Q 3.141609287077075 2.1742e-08 au
   Orbit Determination Parameters
   # obs. used (total)      490  
   data-arc span      9601 days (26.29 yr)  
   first obs. used      1994-01-07  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58389  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:50:27  

Additional Information
 Earth MOID = 1.85306 au 
 Jupiter MOID = 1.92231 au 
 T_jup = 3.254 
[ 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 15.6   n/a MPO469006  

100180 (1994 AR9)          Discovered 1994-Jan-08 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1994 AR9 = 2000 GN43 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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