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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237121940202528 4.5483e-08  
a 3.217001306301689 3.0943e-08 au
q 2.819019016533088 1.4026e-07 au
i 4.182291570866695 4.0218e-06 deg
node 231.0990092369869 6.7245e-05 deg
peri 349.3619750319463 7.0415e-05 deg
M 73.85492207642994 1.9614e-05 deg
tp 2458568.133311804214
(2019-Mar-25.63331180)
0.00011537 TDB
period 2107.537363446188
5.77
3.0407e-05
8.325e-08
d
yr
n .1708154769846346 2.4645e-09 deg/d
Q 3.614983596070291 3.4771e-08 au
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      7177 days (19.65 yr)  
   first obs. used      2001-02-22  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 23:44:23  

Additional Information
 Earth MOID = 1.81101 au 
 Jupiter MOID = 1.37 au 
 T_jup = 3.174 
[ show covariance matrix ]

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 15.5   n/a MPO437183  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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