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19140 Jansmit (1989 RJ2)
Classification: Main-belt Asteroid          SPK-ID: 2019140
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2539140872657261 9.3992e-08  
a 2.323514419847397 2.3636e-08 AU
q 1.733541376683092 2.1435e-07 AU
i 21.63099380872915 1.2008e-05 deg
node 250.0158602161595 2.2823e-05 deg
peri 131.7004778350297 3.5067e-05 deg
M 334.6769181906447 3.5625e-05 deg
tp 2456891.497726556400
(2014-Aug-21.99772656)
0.00012903 JED
period 1293.649082956457
3.54
1.9739e-05
5.404e-08
d
yr
n .2782825765834963 4.2462e-09 deg/d
Q 2.913487463011702 2.9637e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      452  
   data-arc span      21339 days (58.42 yr)  
   first obs. used      1955-03-19  
   last obs. used      2013-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54818  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Sep-24 00:30:25  

Additional Information
 Earth MOID = .79724 AU 
 T_jup = 3.441 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO266056  

19140 Jansmit           Discovered 1989 Sept. 2 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Jan Smit (b. 1948) has made important contributions to geology and paleontology by establishing the sequence of impact-generated events that occurred 65 million years ago, including ejecta fallout, tsunami propagation, geochemical disturbances and extinction of foraminifera and dinosaurs.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020526/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1989 RJ2 = 1975 VE9 = 1999 JK122 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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