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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2069989585530702 6.2496e-08  
a 2.591273100938372 1.1161e-08 au
q 2.054882267717544 1.5889e-07 au
i 11.87726226004664 6.2947e-06 deg
node 333.2070046140882 2.7342e-05 deg
peri 212.3340157474608 2.9861e-05 deg
M 111.9898574927791 1.3523e-05 deg
tp 2458526.537045183705
(2019-Feb-12.03704518)
5.5939e-05 TDB
period 1523.590328212249
4.17
9.8431e-06
2.695e-08
d
yr
n .2362839887690918 1.5265e-09 deg/d
Q 3.1276639341592 1.3471e-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 = 1.06833 au 
 Jupiter MOID = 1.89088 au 
 T_jup = 3.359 
[ show covariance matrix ]

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 13.7   n/a MPO473890  
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

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