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JPL Small-Body Database Browser
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9123 Yoshiko (1998 FQ11)
Classification: Main-belt Asteroid          SPK-ID: 2009123
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2061500293603883 6.2577e-08  
a 2.591107248728784 1.0984e-08 au
q 2.056950413327431 1.5873e-07 au
i 11.86861903033504 6.2915e-06 deg
node 333.2650768492709 2.7373e-05 deg
peri 212.3389923252793 2.9919e-05 deg
M 17.50525923742958 1.3314e-05 deg
tp 2458526.421435718612
(2019-Feb-11.92143572)
5.6151e-05 TDB
period 1523.444056416935
4.17
9.6875e-06
2.652e-08
d
yr
n .2363066753148141 1.5027e-09 deg/d
Q 3.125264084130138 1.3249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1346  
   data-arc span      16836 days (46.09 yr)  
   first obs. used      1973-04-05  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49939  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:39:57  

Additional Information
 Earth MOID = 1.07079 au 
 Jupiter MOID = 1.89447 au 
 T_jup = 3.360 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO395088  
diameter diameter 10.659 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1998 FQ11 = 1952 DB1 = 1973 GD1 = 1977 CU2 = 1977 EC = 1981 AA4 
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