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6789 Milkey (1991 RM6)
Classification: Main-belt Asteroid          SPK-ID: 2006789
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1408350770059114 5.8722e-08  
a 2.337942033388963 1.363e-08 au
q 2.008677787081271 1.3543e-07 au
i 6.167548099329202 5.6081e-06 deg
node 138.0889243185007 4.8824e-05 deg
peri 283.6843964156092 5.3391e-05 deg
M 233.525050004585 2.4416e-05 deg
tp 2457859.223565417625
(2017-Apr-15.72356542)
9.0803e-05 JED
period 1305.716930952191
3.57
1.1418e-05
3.126e-08
d
yr
n .2757106011771409 2.411e-09 deg/d
Q 2.667206279696654 1.5549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1133  
   data-arc span      12249 days (33.54 yr)  
   first obs. used      1982-01-30  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49772  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:20:15  

Additional Information
 Earth MOID = 1.03135 au 
 Jupiter MOID = 2.64326 au 
 T_jup = 3.545 
[ 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 13.9 mag n/a MPO344356  

6789 Milkey           Discovered 1991 Sept. 4 by E. F. Helin at Palomar.
Robert Milkey (b. 1944) served as executive officer of the American Astronomical Society during 1995-2006. During his tenure he expanded and enhanced the society's journals---especially their electronic versions, improved its financial health and increased the range of its activities in education and public policy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1991 RM6 = 1982 BC13 = 1989 AT9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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