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9250 Chamberlin (4643 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2009250
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2046363780990688 5.8657e-08  
a 3.121103473367624 2.846e-08 au
q 2.48241216290525 1.7783e-07 au
i 19.34060645007793 6.1074e-06 deg
node 181.3296717214335 1.5171e-05 deg
peri 55.83538160627701 2.0533e-05 deg
M 146.2805746533488 1.1944e-05 deg
tp 2456782.139169605830
6.822e-05 JED
period 2014.00561653561
n .1787482602055766 2.4449e-09 deg/d
Q 3.759794783829999 3.4283e-08 au
  Orbit Determination Parameters
   # obs. used (total)      969  
   data-arc span      20188 days (55.27 yr)  
   first obs. used      1960-09-24  
   last obs. used      2016-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51337  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:33:38  

Additional Information
 Earth MOID = 1.52732 au 
 Jupiter MOID = 1.42244 au 
 T_jup = 3.098 
[ 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 13.5 mag n/a MPO358720  

9250 Chamberlin           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named in honor of Alan B. Chamberlin, a senior engineer within the Navigation and Flight Mechanics Section of NASA's Jet Propulsion Laboratory. Since joining the staff at JPL in 1996, Alan has shown his expertise in astronomical observing and celestial mechanics. His research work has centered on the search for gaseous emissions from suspected defunct comets and the uncertainties associated with the close approaches to the earth of the so-called potentially hazardous objects. For the New Millennium Deep Space One spacecraft that was launched on 1998 Oct. 25, Alan is responsible for the ephemeris development for both the mission targets and the two dozen well-observed minor planets that will be used by this spacecraft to navigate autonomously to its targets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 4643 P-L = 1993 RU19 = 1997 JX7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-02 03:39 UT
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