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(2012 TC4)
Classification: Apollo [NEO]          SPK-ID: 3609693
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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.

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 2458027.5 (2017-Oct-01.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .336078378275231 2.4454e-08  
a 1.406087192264245 7.8362e-08 au
q .9335316889745044 1.8165e-08 au
i .8571723418033164 1.0454e-06 deg
node 198.2327343359685 1.0379e-06 deg
peri 222.5838803027783 6.9766e-06 deg
M 332.7890866483427 5.6597e-06 deg
tp 2458073.531743445733
5.7459e-06 TDB
period 608.9993167926712
n .5911336680900728 4.9416e-08 deg/d
Q 1.878642695553985 1.047e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.172240468630678E-11 8.001E-12
A2 [EST] -2.734598700568092E-13 6.54E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      802  
   # delay obs. used      7  
   # Doppler obs. used      2  
   data-arc span      1897 days (5.19 yr)  
   first obs. used      2012-10-04  
   last obs. used      2017-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .29423  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2017-Dec-16 22:22:34  

Additional Information
 Earth MOID = .000148833 au 
 Jupiter MOID = 3.45846 au 
 T_jup = 4.680 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.7   n/a MPO240126  
rotation period rot_per 0.204155 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Odden, C.E.; Verhaegh, J.C.; McCullough, D.G.; Briggs, J.W. (2013) Minor Planet Bull. 40, 176-177.]
[Polishook, D. (2013). Minor Planet Bull. 40, 42-43.]
[Warner, B.D. (2013) Minor Planet Bull. 40, 71-80.]
[Carbognani, A. (2014) Minor Planet Bull. 41, 4-8.]
[Tan, H.; Gao, X. (2018) Minor Planet Bull. 45, 220-221.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 19-34.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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