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9123 Yoshiko (1998 FQ11)
Classification: Main-belt Asteroid          SPK-ID: 2009123
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .206257619703248 9.7271e-08  
a 2.590886849096452 2.2045e-08 AU
q 2.056496694681369 2.5337e-07 AU
i 11.87093709813856 9.5196e-06 deg
node 333.288189336337 3.1148e-05 deg
peri 212.0585332645603 3.6399e-05 deg
M 359.7337934733046 2.7055e-05 deg
tp 2457001.626386132617
(2014-Dec-10.12638613)
0.00011449 JED
period 1523.249684279366
4.17
1.9441e-05
5.323e-08
d
yr
n .2363368288963817 3.0164e-09 deg/d
Q 3.125277003511534 2.6592e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      15320 days (41.94 yr)  
   first obs. used      1973-04-05  
   last obs. used      2015-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49918  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:34:10  

Additional Information
 Earth MOID = 1.07087 AU 
 T_jup = 3.360 
[ 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 13.5 mag n/a MPO279612  

9123 Yoshiko           Discovered 1998 Mar. 24 by T. Kagawa at the Gekko Observatory.
Yoshiko Nakano (b. 1933), a director of the Gekko Observatory, received the Medal with a Blue Ribbon in 1997 from the Japanese Government for her contribution to astronomical activities and education.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070926/MPCPages.arcLast Updated: 2007-09-30

[ show close-approach data ]
Alternate Designations
 1998 FQ11 = 1952 DB1 = 1973 GD1 = 1977 CU2 = 1977 EC = 1981 AA4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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