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12443 Paulsydney (1996 EQ2)
Classification: Main-belt Asteroid          SPK-ID: 2012443
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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.

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2059754359395864 4.2695e-08  
a 3.118945023262369 1.944e-08 au
q 2.476518962424299 1.3186e-07 au
i 17.46603380579752 4.767e-06 deg
node 195.9747251973344 1.4033e-05 deg
peri 205.0235830559343 1.6778e-05 deg
M 247.781693022082 1.1564e-05 deg
tp 2459627.649698530364
(2022-Feb-17.14969853)
6.8184e-05 TDB
period 2011.916750048263
5.51
1.881e-05
5.15e-08
d
yr
n .1789338450467019 1.6729e-09 deg/d
Q 3.761371084100439 2.3444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1662  
   data-arc span      8858 days (24.25 yr)  
   first obs. used      1996-03-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:27:33  

Additional Information
 Earth MOID = 1.49334 au 
 Jupiter MOID = 1.72155 au 
 T_jup = 3.114 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456608.5 (2013-Nov-12.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2096319333031341 4.2769e-08  
q 2.459384237018231 1.3213e-07 au
tp 2455615.531202155523
(2011-Feb-23.03120216)
5.2854e-05 TDB
node 196.1137335292322 1.4007e-05 deg
peri 205.1780844277771 1.6649e-05 deg
i 17.50426119579382 4.7756e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1662  
   data-arc span      8858 days (24.25 yr)  
   first obs. used      1996-03-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:27:33  

Additional Information
 Jupiter MOID = 1.72155 au 
 T_jup = 3.114 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.829148939411992E-15 -5.612038533949827E-15 3.873804364673533E-14 1.200717553724074E-15 3.072487074022634E-14 -3.093756709022052E-16
q -5.612038533949827E-15 1.745922590900113E-14 -7.526319043379487E-14 -3.284491851836536E-15 -6.457074134498934E-14 1.405184823364728E-15
tp 3.873804364673533E-14 -7.526319043379487E-14 2.793596913976334E-9 2.496439362412054E-12 4.931850243032081E-10 3.588469196434146E-12
node 1.200717553724074E-15 -3.284491851836536E-15 2.496439362412054E-12 1.962026750279917E-10 -1.863711505381052E-10 1.479282816270686E-11
peri 3.072487074022634E-14 -6.457074134498934E-14 4.931850243032081E-10 -1.863711505381052E-10 2.771760489987961E-10 -1.34281575829808E-11
i -3.093756709022052E-16 1.405184823364728E-15 3.588469196434146E-12 1.479282816270686E-11 -1.34281575829808E-11 2.280651094049425E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO263461  
diameter diameter 8.944 km 0.313 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.28 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.221   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

12443 Paulsydney           Discovered 1996 Mar. 15 by the AMOS team at Haleakala.
With the gracious support of his family, Paul Sydney, a physicist on the AMOS team, has dedicated many long hours to demonstrating that U.S. Air Force assets could be applied successfully to following up minor planets. In return, the Air Force has benefited significantly from collaboration with the astronomical community.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1996 EQ2 = 1997 GX41 = 1998 MT10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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