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100737 (1998 DR9)
Classification: Main-belt Asteroid          SPK-ID: 2100737
[ 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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1373916977795483 5.1155e-08  
a 2.307626687303202 1.3778e-08 au
q 1.990577938893221 1.2063e-07 au
i 7.047846099759726 6.2732e-06 deg
node 7.230648109000478 4.0703e-05 deg
peri 7.565259878685559 4.4977e-05 deg
M 244.5453328716694 2.1032e-05 deg
tp 2459411.134797347814
(2021-Jul-15.63479735)		 7.6329e-05 TDB
period 1280.403215583291
3.51		 1.1467e-05
3.139e-08		 d
yr
n .2811614307263364 2.5181e-09 deg/d
Q 2.624675435713185 1.5671e-08 au
   Orbit Determination Parameters
   # obs. used (total)      320  
   data-arc span      7733 days (21.17 yr)  
   first obs. used      1998-02-23  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57192  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:10:33  

Additional Information
 Earth MOID = .991438 au 
 Jupiter MOID = 2.84153 au 
 T_jup = 3.564 
[ 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 16.6   n/a MPO422319  

100737 (1998 DR9)          Discovered 1998-Feb-23 by Galad, A., Pravda, A. at Modra
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 DR9 = 2000 XM20 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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