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254422 Henrykent (2004 VR122)
Classification: Outer Main-belt Asteroid          SPK-ID: 2254422
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207628331677744 8.698e-08  
a 3.216929295719891 6.7467e-08 AU
q 2.828443799868344 2.5103e-07 AU
i 4.185758996073 8.2068e-06 deg
node 231.2051014509396 0.00013976 deg
peri 349.5998553381496 0.00014682 deg
M 91.85022108168911 4.4348e-05 deg
tp 2456462.802019086116
0.00025769 JED
period 2107.466599964319
n .1708212125431051 5.3738e-09 deg/d
Q 3.605414791571438 7.5615e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      4962 days (13.59 yr)  
   first obs. used      2001-02-22  
   last obs. used      2014-09-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56216  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 20:36:21  

Additional Information
 Earth MOID = 1.82189 AU 
 T_jup = 3.174 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6 mag n/a MPO302997  

254422 Henrykent           Discovered 2004 Nov. 9 by P. A. Wiegert and A. Papadimos at Mauna Kea.
Henry Kent is an inventor with a passion and curiosity for science and engineering. He worked at the Ontario Science Center in Toronto, Canada, for twenty years.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121228/MPCPages.arcLast Updated: 2013-01-02

[ show close-approach data ]
Alternate Designations
 2004 VR122 = 2003 SL287 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Feb-28 06:54 UT
(server date/time)  
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