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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3118707751205043 7.3959e-08  
a 2.774388047324932 1.6718e-08 au
q 1.909137496520643 2.1048e-07 au
i 31.37553814428717 9.1378e-06 deg
node 295.6034487279662 1.0494e-05 deg
peri 57.79260327187162 1.6816e-05 deg
M 320.4878881461093 1.0044e-05 deg
tp 2458785.758001976574
(2019-Oct-29.25800198)
4.7423e-05 TDB
period 1687.909797334702
4.62
1.5256e-05
4.177e-08
d
yr
n .2132815394332439 1.9278e-09 deg/d
Q 3.639638598129221 2.1931e-08 au
  Orbit Determination Parameters
   # obs. used (total)      790  
   data-arc span      13634 days (37.33 yr)  
   first obs. used      1982-07-27  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40994  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 10:17:06  

Additional Information
 Earth MOID = 1.01874 au 
 Jupiter MOID = 2.14084 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 13.8   n/a MPO400985  
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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