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16552 Sawamura (1991 SB)
Classification: Main-belt Asteroid          SPK-ID: 2016552
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1330988906320526 5.8583e-08  
a 2.422102918700237 1.7198e-08 au
q 2.099723707224578 1.3543e-07 au
i 2.493098594511304 5.7269e-06 deg
node 216.34707526201 0.0001086 deg
peri 180.4420394395669 0.00011071 deg
M 138.5601288281856 1.9129e-05 deg
tp 2456870.564401755803
(2014-Aug-01.06440176)
7.3192e-05 JED
period 1376.852179492947
3.77
1.4664e-05
4.015e-08
d
yr
n .2614659767852328 2.7848e-09 deg/d
Q 2.744482130175895 1.9487e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1185  
   data-arc span      11043 days (30.23 yr)  
   first obs. used      1984-12-28  
   last obs. used      2015-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50704  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:26:41  

Additional Information
 Earth MOID = 1.10534 au 
 Jupiter MOID = 2.66051 au 
 T_jup = 3.499 
[ 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 14.2 mag n/a MPO337399  

16552 Sawamura           Discovered 1991 Sept. 16 by K. Endate and K. Watanabe at Kitami.
Tsuneo Sawamura (b. 1928) invented a new anti-corrosion solder in Japan. It is being used by NASA for the electrical systems in space shuttles.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060219/MPCPages.arcLast Updated: 2010-06-03

[ show close-approach data ]
Alternate Designations
 1991 SB = 1984 YG5 = 1997 EU54 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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