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101730 (1999 EX9)
Classification: Main-belt Asteroid          SPK-ID: 2101730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1413405344780382 6.291e-08  
a 2.598298115934504 1.3176e-08 au
q 2.231053271495041 1.6265e-07 au
i 3.415888190314066 5.5689e-06 deg
node 331.1879219650322 9.5468e-05 deg
peri 83.8920698538163 9.8139e-05 deg
M 166.749203452773 2.085e-05 deg
tp 2458491.913030388984
(2019-Jan-08.41303039)
8.807e-05 TDB
period 1529.79027052572
4.19
1.1637e-05
3.186e-08
d
yr
n .2353263757366454 1.79e-09 deg/d
Q 2.965542960373966 1.5038e-08 au
  Orbit Determination Parameters
   # obs. used (total)      299  
   data-arc span      8264 days (22.63 yr)  
   first obs. used      1997-09-30  
   last obs. used      2020-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56007  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:17  

Additional Information
 Earth MOID = 1.24492 au 
 Jupiter MOID = 2.37788 au 
 T_jup = 3.399 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO412744  

101730 (1999 EX9)          Discovered 1999-Mar-14 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 EX9 = 1997 SO28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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