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(2004 HF12)
Classification: Apollo [NEO, PHA]          SPK-ID: 3180152
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]
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.
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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6507960379301174 0.00011315  
a 2.134000639419312 0.00071357 AU
q .7452014783448868 8.1297e-06 AU
i 13.36324454725514 0.0014447 deg
node 22.64248890740538 0.0044615 deg
peri 104.9744822070353 0.0083318 deg
M 331.0850477829326 0.52953 deg
tp 2456491.955583065069
(2013-Jul-18.45558307)		 1.7207 JED
period 1138.649984833484
3.12		 0.57112
0.001564		 d
yr
n .3161638824881258 0.00015858 deg/d
Q 3.522799800493738 0.001178 AU
   Orbit Determination Parameters
   # obs. used (total)      75  
   data-arc span      48 days  
   first obs. used      2004-04-20  
   last obs. used      2004-06-07  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      6  
   fit RMS      .82978  
   data source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 19:55:41  

Additional Information
 Earth MOID = .0205356 AU 
 T_jup = 3.384 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.208 mag .5151 13 autocmod 2.5a

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