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255703 Stetson (2006 QN90)
Classification: Main-belt Asteroid          SPK-ID: 2255703
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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1178122395587286 1.0231e-07  
a 2.421095126320941 3.2932e-08 au
q 2.135860487304348 2.433e-07 au
i 5.144616912293259 1.4595e-05 deg
node 11.46868804735273 0.00011553 deg
peri 296.532665601968 0.00013497 deg
M 195.087693917724 7.0895e-05 deg
tp 2458030.828249049751
0.00027541 JED
period 1375.992944666599
n .2616292484604473 5.338e-09 deg/d
Q 2.706329765337534 3.6811e-08 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      6993 days (19.15 yr)  
   first obs. used      1995-09-25  
   last obs. used      2014-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55586  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 10:37:48  

Additional Information
 Earth MOID = 1.12551 au 
 Jupiter MOID = 2.51656 au 
 T_jup = 3.498 
[ 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 17.5 mag n/a MPO264644  

255703 Stetson           Discovered 2006 Aug. 25 by D. D. Balam at Mauna Kea.
Peter Brailey Stetson (b. 1952) develops freely-available software for the analysis of CCD images and spectra, notably DAOPHOT for precision photometry in crowded fields. His fundamental contributions to numerous fields have greatly advanced astrophysics since the deployment of CCDs in the 1980s.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120207/MPCPages.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 2006 QN90 = 1995 SP44 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-Feb-10 08:46 UT
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