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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1410115748325689 5.9762e-08  
a 2.3376399885613 1.5158e-08 AU
q 2.008005692382683 1.3694e-07 AU
i 6.167505951106721 7.0447e-06 deg
node 138.0901428363205 4.8899e-05 deg
peri 283.7334327140331 5.5792e-05 deg
M 123.164082344445 2.59e-05 deg
tp 2456553.871488959197
(2013-Sep-18.37148896)
9.2888e-05 JED
period 1305.463905662275
3.57
1.2697e-05
3.476e-08
d
yr
n .2757640394640926 2.6821e-09 deg/d
Q 2.667274284739917 1.7295e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1002  
   data-arc span      11804 days (32.32 yr)  
   first obs. used      1982-01-30  
   last obs. used      2014-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52022  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:08:11  

Additional Information
 Earth MOID = 1.03124 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 13.8 mag n/a MPO234881  

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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