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12423 Slotin (1995 UQ16)
Classification: Main-belt Asteroid          SPK-ID: 2012423
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711740113035816 5.0029e-08  
a 2.578184233824615 1.515e-08 au
q 2.136866096641204 1.3243e-07 au
i 4.8425816364737 4.7543e-06 deg
node 84.95881422099049 8.0678e-05 deg
peri 201.5281316574653 8.3445e-05 deg
M 104.986734600321 1.9451e-05 deg
tp 2457159.537887367332
8.2818e-05 JED
period 1512.061129933222
n .2380856123296409 2.0986e-09 deg/d
Q 3.019502371008025 1.7743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1115  
   data-arc span      7355 days (20.14 yr)  
   first obs. used      1995-10-17  
   last obs. used      2015-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52437  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:20:45  

Additional Information
 Earth MOID = 1.12108 au 
 Jupiter MOID = 2.13217 au 
 T_jup = 3.400 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO347623  

12423 Slotin           Discovered 1995 Oct. 17 by Spacewatch at Kitt Peak.
As a result of an accident on 1946 May 21 at the Los Alamos laboratory, Louis Alexander Slotin (1910-1946) received a lethal dose of radiation. He bravely insisted that doctors monitor his deteriorating health during his final nine days.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1995 UQ16 = 1998 KQ6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-04 04:08 UT
(server date/time)  
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