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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 ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .25385494713219 9.0569e-08  
a 2.323351389982831 2.321e-08 AU
q 1.733557145709239 2.0735e-07 AU
i 21.63112330863044 1.0958e-05 deg
node 250.0148084143834 2.1698e-05 deg
peri 131.7162586347732 3.1547e-05 deg
M 30.32812948965871 3.0278e-05 deg
tp 2456891.528256426117
(2014-Aug-22.02825643)
0.0001078 JED
period 1293.512931615997
3.54
1.9383e-05
5.307e-08
d
yr
n .2783118677833772 4.1704e-09 deg/d
Q 2.913145634256422 2.9101e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      21769 days (59.60 yr)  
   first obs. used      1955-03-19  
   last obs. used      2014-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50637  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:33:30  

Additional Information
 Earth MOID = .798034 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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