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JPL Small-Body Database Browser
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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696036778370734 2.9343e-08  
a 2.285216583272133 7.3048e-09 au
q 1.897635446094909 6.6433e-08 au
i 3.205461211708153 3.6438e-06 deg
node 284.919392671723 7.9298e-05 deg
peri 141.3877952650387 8.0633e-05 deg
M 178.7041549188645 1.3876e-05 deg
tp 2458374.143445222541
(2018-Sep-12.64344522)		 4.8118e-05 TDB
period 1261.796961700536
3.45		 6.0501e-06
1.656e-08		 d
yr
n .2853073917017715 1.368e-09 deg/d
Q 2.672797720449358 8.5438e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1398  
   data-arc span      13999 days (38.33 yr)  
   first obs. used      1981-01-08  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:21:19  

Additional Information
 Earth MOID = .912738 au 
 Jupiter MOID = 2.61759 au 
 T_jup = 3.581 
[ 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 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

[ show close-approach data ]
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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