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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1244701083949538 4.5388e-08  
a 3.21130588839925 2.9845e-08 au
q 2.811594296380842 1.3952e-07 au
i 4.184082591918433 3.9836e-06 deg
node 230.9965617975932 6.4996e-05 deg
peri 348.6760221451007 6.8123e-05 deg
M 142.3793270713436 1.89e-05 deg
tp 2458565.185461869102
(2019-Mar-22.68546187)
0.00011113 TDB
period 2101.943027003936
5.75
2.9302e-05
8.022e-08
d
yr
n .1712701036017785 2.3876e-09 deg/d
Q 3.611017480417658 3.356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      7224 days (19.78 yr)  
   first obs. used      2001-02-22  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51536  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 02:28:06  

Additional Information
 Earth MOID = 1.80436 au 
 Jupiter MOID = 1.371 au 
 T_jup = 3.175 
[ 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 15.70   n/a E2021B55  

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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