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100449 (1996 RJ9)
Classification: Main-belt Asteroid          SPK-ID: 2100449
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1987614500673662 4.3426e-08  
a 2.743790875388204 1.233e-08 au
q 2.198431022314437 1.1591e-07 au
i 8.166440540206658 4.9441e-06 deg
node 347.0054403378443 2.8189e-05 deg
peri 9.181604799196608 3.0486e-05 deg
M 71.57453458998812 1.0447e-05 deg
tp 2458670.449062967658
(2019-Jul-05.94906297)		 4.7902e-05 TDB
period 1660.064407156671
4.55		 1.119e-05
3.064e-08		 d
yr
n .2168590558583216 1.4618e-09 deg/d
Q 3.289150728461972 1.4781e-08 au
   Orbit Determination Parameters
   # obs. used (total)      715  
   data-arc span      11814 days (32.34 yr)  
   first obs. used      1987-09-24  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48155  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:06:25  

Additional Information
 Earth MOID = 1.1943 au 
 Jupiter MOID = 2.15714 au 
 T_jup = 3.305 
[ 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 15.2   n/a MPO502722  
diameter diameter 6.026 km 0.531 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.043   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

100449 (1996 RJ9)          Discovered 1996-Sep-07 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1996 RJ9 = 2001 SD261 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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