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20392 Mikeshepard (1998 MA8)
Classification: Main-belt Asteroid          SPK-ID: 2020392
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09567560310084464 7.1549e-08  
a 2.895327794743001 3.7809e-08 AU
q 2.618315561806326 2.0937e-07 AU
i 15.90267265603812 8.4347e-06 deg
node 253.0721486097339 3.0137e-05 deg
peri 51.51578364475825 5.9224e-05 deg
M 125.9102029780461 4.8366e-05 deg
tp 2456371.133736308330
(2013-Mar-19.63373631)
0.00024334 JED
period 1799.471762971477
4.93
3.5248e-05
9.65e-08
d
yr
n .2000587102325685 3.9187e-09 deg/d
Q 3.172340027679676 4.1426e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      710  
   data-arc span      13726 days (37.58 yr)  
   first obs. used      1977-03-20  
   last obs. used      2014-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51931  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:36:21  

Additional Information
 Earth MOID = 1.63305 AU 
 T_jup = 3.225 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO267784  

20392 Mikeshepard           Discovered 1998 June 19 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Michael Shepard (b. 1962), a professor of geology and geosciences at Bloomsburg University of Pennsylvania, specializes in radar and optical remote sensing of the minor and the terrestrial planets. The name was suggested by S. J. Ostro.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080321/MPCPages.arcLast Updated: 2008-03-26

Alternate Designations
 1998 MA8 = 1977 FQ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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