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29982 Sarahwu (1999 TT31)
Classification: Main-belt Asteroid          SPK-ID: 2029982
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 2457200.5 (2015-Jun-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03024892300126859 7.623e-08  
a 2.236992664691513 1.4651e-08 AU
q 2.169326045822856 1.7472e-07 AU
i 6.132023523557852 7.0678e-06 deg
node 8.282395729804096 6.1346e-05 deg
peri 173.6243273943267 0.00012803 deg
M 88.37313637431033 0.00011276 deg
tp 2456900.505678239486
0.00038239 JED
period 1222.067703655467
n .294582696951374 2.894e-09 deg/d
Q 2.304659283560169 1.5094e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      576  
   data-arc span      16005 days (43.82 yr)  
   first obs. used      1971-04-16  
   last obs. used      2015-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52887  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:34:08  

Additional Information
 Earth MOID = 1.1708 AU 
 T_jup = 3.629 
[ 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 15.5 mag n/a MPO290686  

29982 Sarahwu           Discovered 1999 Oct. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Junyi (Sarah) Wu (b. 1996) was awarded second place in the 2013 Intel International Science and Engineering Fair for her medicine and health sciences project. She attends the Assumption College School, Brantford, Ontario, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-05-14Last Updated: 2014-05-15
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2015-Nov-28 07:40 UT
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