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109640 (2001 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2109640
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3118058449001146 7.1373e-08  
a 2.774041579826389 1.6327e-08 au
q 1.909079201240573 2.0286e-07 au
i 31.3784404337854 8.6612e-06 deg
node 295.6025788907772 1.0411e-05 deg
peri 57.84094647039434 1.6624e-05 deg
M 45.78317899985902 9.8349e-06 deg
tp 2458785.879441480708
(2019-Oct-29.37944148)
4.5744e-05 TDB
period 1687.593626191471
4.62
1.4899e-05
4.079e-08
d
yr
n .213321497789987 1.8833e-09 deg/d
Q 3.639003958412205 2.1418e-08 au
  Orbit Determination Parameters
   # obs. used (total)      881  
   data-arc span      13707 days (37.53 yr)  
   first obs. used      1982-07-27  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41429  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:29:52  

Additional Information
 Earth MOID = 1.01967 au 
 Jupiter MOID = 2.14486 au 
 T_jup = 3.060 
[ 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 13.9   n/a MPO502756  
diameter diameter 7.157 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.150   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

109640 (2001 RJ)          Discovered 2001-Sep-06 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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