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157258 Leach (2004 RL165)
Classification: Main-belt Asteroid          SPK-ID: 2157258
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1861290203115938 7.8399e-08  
a 2.814887734234273 2.7945e-08 au
q 2.290955437974125 2.3023e-07 au
i 2.770966810649403 7.5602e-06 deg
node 13.73149777124441 0.00013646 deg
peri 336.0164280782586 0.00013731 deg
M 193.9924827359256 2.0913e-05 deg
tp 2458395.954418489090
(2018-Oct-04.45441849)
0.00010818 JED
period 1725.003755104314
4.72
2.5688e-05
7.033e-08
d
yr
n .2086951978711665 3.1078e-09 deg/d
Q 3.33882003049442 3.3147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      5157 days (14.12 yr)  
   first obs. used      2002-02-13  
   last obs. used      2016-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53522  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 17:02:43  

Additional Information
 Earth MOID = 1.2843 au 
 Jupiter MOID = 2.07906 au 
 T_jup = 3.292 
[ 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 16.1 mag n/a MPO268121  

157258 Leach           Discovered 2004 Sept. 12 at Jarnac.
Sidney ("Sid") Leach (b. 1951) and Gloria Leach (b. 1958) have spread their enthusiasm for astronomy around young people for years in schools and public events. Sid serves as president of the U.S. National Sharing the Sky Foundation, and Gloria plans his travels for astrophotography across the northern and southern hemispheres.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091202/MPCPages.arcLast Updated: 2010-04-12

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