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157494 Durham (2005 RK28)
Classification: Main-belt Asteroid          SPK-ID: 2157494
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 .2570935621918802 3.4808e-07  
a 2.537346496013032 2.4344e-08 AU
q 1.885011046837956 8.9688e-07 AU
i 4.704570032356453 1.753e-05 deg
node 28.22305904885074 8.949e-05 deg
peri 21.42228106881404 9.7159e-05 deg
M 92.47207645554946 2.8325e-05 deg
tp 2456621.293124839946
(2013-Nov-24.79312484)
0.00011272 JED
period 1476.277815857643
4.04
2.1246e-05
5.817e-08
d
yr
n .2438565398280798 3.5095e-09 deg/d
Q 3.189681945188108 3.0603e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      412  
   data-arc span      5477 days (15.00 yr)  
   first obs. used      1999-03-22  
   last obs. used      2014-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55038  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 09:59:30  

Additional Information
 Earth MOID = .895806 AU 
 T_jup = 3.396 
[ 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 16.0 mag n/a MPO280829  

157494 Durham           Discovered 2005 Sept. 11 at Jarnac.
Steve Durham (b. 1951) and his wife Marge (b. 1948) have worked tirelessly to promote astronomy to people living in the Adirondack Mountains. Using binoculars and telescopes, the couple has inspired hundreds of young people to look toward the night sky.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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