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JPL Small-Body Database Browser
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7561 Patrickmichel (1986 TR2)
Classification: Main-belt Asteroid          SPK-ID: 2007561
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2420086906089105 4.0917e-08  
a 2.777248109145572 1.2838e-08 au
q 2.105129930755179 1.1519e-07 au
i 9.807864038817685 4.4046e-06 deg
node 66.61331232875091 2.2741e-05 deg
peri 348.1813283098661 2.397e-05 deg
M 350.5200311703575 8.0308e-06 deg
tp 2458645.016893965586
(2019-Jun-10.51689397)
3.7841e-05 TDB
period 1690.520519170859
4.63
1.1722e-05
3.209e-08
d
yr
n .2129521623177738 1.4766e-09 deg/d
Q 3.449366287535964 1.5945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2745  
   data-arc span      12105 days (33.14 yr)  
   first obs. used      1986-10-07  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3764  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:45:38  

Additional Information
 Earth MOID = 1.11767 au 
 Jupiter MOID = 1.92132 au 
 T_jup = 3.271 
[ 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 12.8   n/a MPO332890  

7561 Patrickmichel           Discovered 1986 Oct. 7 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of Patrick Michel (b. 1970), French dynamicist, who was the first to compute the locations and strengths of secular resonances in the inner solar system. He has also investigated the various effects that bear on the evolution of near-earth and Mars-crossing objects. Michel's work on the evolution of (433) Eros has shown that, although it is possible for this object to strike the earth in the distant future, the probability of such an event remains low. Name suggested and citation prepared by A. Cellino and P. Farinella.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1986 TR2 = 1989 KT = 1993 KP2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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