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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412521367183872 6.2853e-08  
a 2.598663782496784 1.3222e-08 au
q 2.231596970606427 1.625e-07 au
i 3.415826816032248 5.5686e-06 deg
node 331.1867260042543 9.5464e-05 deg
peri 83.95200901615296 9.8141e-05 deg
M 119.6207937594285 2.0833e-05 deg
tp 2458492.074005752800
(2019-Jan-08.57400575)		 8.8221e-05 TDB
period 1530.113220090259
4.19		 1.1678e-05
3.197e-08		 d
yr
n .2352767071568496 1.7956e-09 deg/d
Q 2.965730594387141 1.509e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55994  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:48  

Additional Information
 Earth MOID = 1.24624 au 
 Jupiter MOID = 2.37694 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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