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5338 Michelblanc (1991 RJ5)
Classification: Main-belt Asteroid          SPK-ID: 2005338
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07110682146948789 3.6847e-08  
a 2.874816178320084 1.3221e-08 au
q 2.670397137570682 1.09e-07 au
i 3.357452910397559 3.9713e-06 deg
node 89.59920880980296 6.2249e-05 deg
peri 296.9961519476234 6.757e-05 deg
M 299.8994467934756 2.7631e-05 deg
tp 2459297.727860940071
0.00013741 TDB
period 1780.383444570516
n .2022036326488327 1.3949e-09 deg/d
Q 3.079235219069485 1.4162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2476  
   data-arc span      20181 days (55.25 yr)  
   first obs. used      1965-05-03  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49758  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:27:25  

Additional Information
 Earth MOID = 1.67675 au 
 Jupiter MOID = 2.26563 au 
 T_jup = 3.290 
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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 12.6   n/a MPO439115  
rotation period rot_per 2.879 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2018) Observatoire de Geneve web site,]

5338 Michelblanc           Discovered 1991 Sept. 13 by H. E. Holt at Palomar.
Named in honor of Michel Blanc (b. 1949), French planetary scientist and director of the Observatoire Midi Pyrenées. Blanc is a expert in dynamics and electrodynamics in the space environments of the earth and planets. He is Cassini Mission Interdisciplinary Scientist for studies of Saturn's magnetosphere. As president of the National Planetology Program of the Institut National de Science de l´Univers of the French National Scientific Research Council, Blanc has played a pivotal role in promoting and developing planetary science in France. Name suggested and citation prepared by M. Fulchignoni.
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

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Alternate Designations
 1991 RJ5 = 1981 RW6 = 1986 QL4 = 1986 RY12 = 1990 MN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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