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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2544927395231641 8.8631e-08  
a 2.323383925085967 1.6701e-08 au
q 1.732099585026757 2.0296e-07 au
i 21.63540377577945 9.1337e-06 deg
node 249.9195792569278 1.6849e-05 deg
peri 131.8911396180067 2.2825e-05 deg
M 197.1384587818801 1.8263e-05 deg
tp 2458185.688707474423
(2018-Mar-08.18870747)
6.8008e-05 JED
period 1293.540102317006
3.54
1.3947e-05
3.818e-08
d
yr
n .278306021866012 3.0008e-09 deg/d
Q 2.914668265145176 2.0951e-08 au
  Orbit Determination Parameters
   # obs. used (total)      622  
   data-arc span      22297 days (61.05 yr)  
   first obs. used      1955-03-19  
   last obs. used      2016-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48689  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:31:40  

Additional Information
 Earth MOID = .79518 au 
 Jupiter MOID = 2.65699 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 14.1 mag n/a MPO365481  

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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