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413536 (2005 SQ121)
Classification: Main-belt Asteroid          SPK-ID: 2413536
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.

Note: If the applet is not working, here are some notes that might help.
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04029349232184348 8.9653e-08  
a 2.688883442590633 3.0108e-08 au
q 2.580538938242276 2.5256e-07 au
i 5.265285610258949 6.5168e-06 deg
node 222.7094021828402 7.8392e-05 deg
peri 122.828122485983 0.00010679 deg
M 138.9116603580412 7.0783e-05 deg
tp 2458379.069458531408
(2018-Sep-17.56945853)		 0.00031644 TDB
period 1610.483917275722
4.41		 2.705e-05
7.406e-08		 d
yr
n .2235352965268801 3.7545e-09 deg/d
Q 2.797227946938991 3.1321e-08 au
   Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      4787 days (13.11 yr)  
   first obs. used      2005-09-01  
   last obs. used      2018-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54413  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 04:37:09  

Additional Information
 Earth MOID = 1.57818 au 
 Jupiter MOID = 2.35787 au 
 T_jup = 3.366 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457316.5 (2015-Oct-21.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04040254941208424 9.0366e-08  
q 2.57962109327335 2.5428e-07 au
tp 2456755.682925095092
(2014-Apr-08.18292510)		 0.00031369 TDB
node 222.8035739054407 7.858e-05 deg
peri 119.9006177140145 0.00010622 deg
i 5.258217728221608 6.5121e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      4787 days (13.11 yr)  
   first obs. used      2005-09-01  
   last obs. used      2018-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54413  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 04:37:09  

Additional Information
 Jupiter MOID = 2.35787 au 
 T_jup = 3.366 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.165980770752456E-15 -2.284841113983457E-14 -7.504414950856655E-13 -9.896157516131701E-14 -4.05725984628101E-13 -1.164721612593804E-15
q -2.284841113983457E-14 6.46583623719728E-14 1.171533214035945E-12 2.819866923276316E-13 9.726208649693672E-13 4.102729148304417E-15
tp -7.504414950856655E-13 1.171533214035945E-12 9.840054975763509E-8 4.180394093564875E-11 2.24695846068671E-8 -1.065234152392931E-11
node -9.896157516131701E-14 2.819866923276316E-13 4.180394093564875E-11 6.174825614384169E-9 -6.134832287209848E-9 -1.920431561612036E-10
peri -4.05725984628101E-13 9.726208649693672E-13 2.24695846068671E-8 -6.134832287209848E-9 1.128322230300188E-8 1.888815680632918E-10
i -1.164721612593804E-15 4.102729148304417E-15 -1.065234152392931E-11 -1.920431561612036E-10 1.888815680632918E-10 4.240722953218826E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO460570  

413536 (2005 SQ121)          Discovered 2005-Sep-29 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-11-10
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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