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15729 Yumikoitahana (1990 UB)
Classification: Main-belt Asteroid          SPK-ID: 2015729
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696037020910263 2.9136e-08  
a 2.285216585994354 7.1349e-09 au
q 1.897635392929896 6.6106e-08 au
i 3.205459426441921 3.5137e-06 deg
node 284.9193762916421 7.5002e-05 deg
peri 141.387825026882 7.617e-05 deg
M 178.7041462502429 1.312e-05 deg
tp 2458374.143474486784
(2018-Sep-12.64347449)
4.5256e-05 TDB
period 1261.796963955173
3.45
5.9094e-06
1.618e-08
d
yr
n .285307391191971 1.3362e-09 deg/d
Q 2.672797779058813 8.345e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      14405 days (39.44 yr)  
   first obs. used      1981-01-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51009  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:52:14  

Additional Information
 Earth MOID = .912738 au 
 Jupiter MOID = 2.61759 au 
 T_jup = 3.581 
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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 14.9   n/a MPO332965  
diameter diameter 6.240 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15729 Yumikoitahana           Discovered 1990 Oct. 16 by A. Takahashi and K. Watanabe at Kitami.
Since their high-school days, Yumiko Itahana (b. 1965) worked together with the first discoverer and greatly influenced his astronomical career.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1990 UB = 1981 AF2 = 1999 JL106 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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